skip to the end for the solution!
Our IS department helpfully upgraded our exchange server overnight to exchange 2010.
After putting in the new details we hit a problem - the calender refused to sync and just came back with the unhelpful "an error has occurred"
We did a bit of googling and realised that quite a few other people were having the same problem with 2010. Most had placed the fault with HTC or Android - we were able to do a bit of digging and certainly with our problems we found a solution.
We tried to sync with another account on our phones (2 different Desires one orange branded one "normal") another test account synced fine - no errors. So that narrowed the fault down to our specific exchange accounts. A bit more googling suggested that possibly corrupted entry's in the calender were causing the sync to fail - or open ended repeating appointments (such as birthdays)
Our IS department found 1 corrupted entry in my colleagues account (a meeting that appeared to be set for some time 3072 ....) I deleted all of my repeating birthdays (they were all in my Google cal anyway). Once this was done both accounts started to sync with no problems.
So the short version - if you cant sync with exchange 2010 on your HTC Desire - find and remove those corrupted entry's and/or delete/edit open ended repeating appointments.
Hopefully this will be useful to someone who will be able to avoid the same couple of hours of panic that we had this morning!
Argh. I cannot tell my users to delete all their open-ended recurring appointments when we migrate to Exchange 2010 later this year...
We also had this problem with exchange 2010 and a number of Desire's and have resolved it by following the advise on/showthread.php?p=6305877#post6305877"]http://forum.xda-developers.com/showthread.php?p=6305877#post6305877[/URL]
When we selected all appointments, assigned a category, then selectd all appointments again and removed the category. waited 10 minutes to ensure Outlook cache and Exchange has synced.
After this the phones worked fine.
Rob Pomeroy said:
Argh. I cannot tell my users to delete all their open-ended recurring appointments when we migrate to Exchange 2010 later this year...
Click to expand...
Click to collapse
the open ended thing maybe not the solution - it may be that one of the recurring appointments was corrupted - could have just been coincidence
the category solution sounds much better !!
alternative for low number of users of exchange
sync emails and contacts normally, download htc sync to computer for calendar. Not Ideal but it works from exchange to the phone but not from the phone to exchange
I want to bump up this thread, as a form of thanks to TS, because after hours of troubleshooting (on why my calendar doesn't get sync), and numerous factory reset, I found out that it's indeed some corrupted entry in the calendar that causes the calendar not being able to sync!
Thanks ever so much!
This solution worked for me on a HTC Wildfire with Android 2.2
As advised, I went into my Desktop Outlook calender, and either deleted or "Saved & Closed" all recurring appointments. Used the month view for this. Works like a charm now! Thank you once again
i never had problem syncing with exchange 2010
Guys,
I had the same issue where the calendar wasn't syncing. The fix that I found was that I had some recurring appointments in outlook with no end date. I put an end date on these in outlook, let it sync back to the server and then the calendar synced first time.
Related
I've had my 2 Desires for about 3 weeks now. When I first received them we were using MS Exchange 2003, and Mail/Contacts/Calendar all synced perfectly.
Since then, we have upgraded our Exchange Server to Exchange 2010, which is lovely, BUT it turns out that the Desire Calendar will not sync with Exchange 2010. It would seem to be a Desire/HTC issue, as our iPhones/iPod Touches still sync Calendar fine with Exchange 2010.
I also note that a colleague is syncing the Desire Calendar with Exchange 2007 without problems.
So it is the combination of Desire Calendar and Exchange 2010 which fails. If I go to Settings/Accounts & Sync/Exchange Activesync and enable Calendar Sync I can see error messages saying "Syncronization is experiencing problems". If I leave Calenday sync enabled, it causes Mail and Contacts to sync poorly too, but if I disable Calendar sync, Mail and Contacts sync fine.
Has anyone else got Calendar sync working with Exchange 2010?
Desire Exchange 2010 Calendar
I recieved my Desire yesterday after reading quite a bit about it. Yes it can Sync with Exchange and all is what i read.
I set it up to Sync with the Exchange 2010 server and to my surprise it didn't sync the existing calendar items. Contacts and Mail is no problem.
If i add e new Calendar item on the Desire it does show in Outlook on my pc so Exchange does have a sort of sync with the Calendar. Adding a new item in Outlook never shows on the Desire. It seems like a one way sync or something. The Desire can sync to Exchange but it seems Exchange cannot sync to the Desire
I have a test account on one of our clients Managed Exchange 2007 servers. Setting up ActiveSync to the Exchange 2007 server works like a charm. Full sync both ways.
Just modify all your calendar items, for example by adding an additonal category by change your view to "list" or "list all active" and selecting all your appointments. Add a category, remove the category and switch back your view. Now you can happy sync your calendar with E2k10
Whoa! Steady there.
Can you give me some background to this before I apply it to my 12 year calendar history? How did you discover this, and have you actually successfully done this?
It worked and now not anymore
Strangest thing. My girlfriend planned a few appointments in here Calendar and invited me. So I accepted those invites on my Desire and all of a sudden the 2way sync worked. I could add items on my Desire and they popped up in the Exchange/Outlook Calendar and vice versa.
But that was unitil I rooted my device this morning...meaning new flash and standard factory reset. Now it will not sync the Calendar anymore. Tried sending new invites from a different account without any luck.
So...the calendar sync does work eventually...dont know why or how I did it.
Other thing you could do is, is install HTC Sync and manually do an Outlook sync of only the Calendar items (all items). I did this and they all showed up on my Desire. I did a one time sync.
Trying to figure out how to get the sync working again.
XDAgeek said:
Whoa! Steady there.
Can you give me some background to this before I apply it to my 12 year calendar history? How did you discover this, and have you actually successfully done this?
Click to expand...
Click to collapse
Not really any background information, sorry. I've done some research on it but did not find anything, including analysing the extended sync protocols, everything looks ok, but there's no sync.
I've got this solution from a swiss-forum "android.pocketpc.ch" (sorry I can't post links since no moderator removed the restrictions yet) and it worked like a charm. I've tried it since I'm the Exchange-Admin myself and I now I've a functional backup;-)
Same problem here. Cannot get calendar to Sync with Exchange 2010.
If I add a new meeting to the Desire it appears in Outlook.
If I modify this meeting in Outlook then it appears as 2 separate meetings on the Desire.
If I delete an appointment on the Desire then it comes back once the sync runs.
All in all very disappointing for a State of the art phone.
Anyone got a real fix for the Exchange 2010 calendar problem?
A huge thanks to dab_ch for posting above the workaround to get the Calendar syncing to Exchange 2010. This is now working perfect to two Desires here.
If you have this problem, follow the advice in the post above. It worked for me, twice.
dab_ch fix is only working in part for me.
Some of the Exchange calendar items still do not appear on the Phone.
If I modify an appointment on Exchange the change is not reflected on the next sync from Exchange
Also, While Exchange Contacts are appearing on the phone. If I add a new contact to the Phone this does not appear in exchange.
The Sync Process still reports "Synchronization is experiencing problems."
A Further update.
I setup a new account on Exchange2010 and then transferred the Calendar using export and import.
Now my Calendar Synch in both directions is working fine.
It looks like my problem was related to a problem with my account on Exchange or some appointment in it.
Contact Sync problems
While the calendar is working 100%.
I still have a problem, that if I create a contact on the phone it does not sync to Exchange 2010.
There are no errors from the ActiveSync process.
Is anybody else having this issue?
Please note that if your Desktop Outlook client is using 'Cached Mailbox', then after adding the temporary category to each item, you MUST wait for the local Outlook database to sync completely back to the Exchange before you then remove the temporary category and then again wait for the completion of the sync back to exchange from Outlook.
Failure to comply with this will leave you with only a partially synced database - the part which did manage to sync back to Exchange.
You can tell when it is still syncing by watching the satus bar at the bottom of Outlook - it will say 'Updating Calendar', then after a few minutes return to 'All folders are up to date'.
Note the sync doesnt start immediately, so you wil see the 'All folders are up to date' message for perhaps 15 seconds before the sync starts. Wait for the 'Updating...' message etc.
Contact sync does seem slow, but it does work here eventually. It ought to be fast tho, so something is not right. I even tried the temporary category trick, but it didnt speed it up.
XDAgeek you are right.
I tried a number of different accounts to reproduce the problem with the Calendar and it seems Cache mode was my issue.
The Calendar sync is now working 100%.
On the Contact Sync from Phone issue, this still seems to be not working. I added a contact to one of my test Desire phones two days ago and it is still not in exchange.
For me it was not the cache mode.
I did an export-mailbox on the Exchange 2010 server.
Deleted my mailbox...recreated it so it was blank....no synch issue of course (So it is definitely not an Exchange 2010 issue)
I created 1 item in the Calendar in Outlook 2007 and that popped up nicely on the Desire. Great...so I thought.
Did an import-mailbox with the backed up pst...and Sync had problems again.
Started filtering out where the problem came from.
Turns out I had some Items (birthdays and such) with recurrence that the ActiveSync in Android is not happy about (Same Items sync fine with a WinMo 6.1 device). So I deleted all the recurrence itmes and copying them back 1 by 1. Syncing was still going fine until a certain item. So I edited that item by removing the recurrence pattern and reapplying it making sure it was an All Day event (that is a Birthday usually ). And Presto...everthing is syncing fine now.
Better logging is needed?
Has anyone else got Calendar sync working with Exchange 2010?
Click to expand...
Click to collapse
Mine is working fine syncing calendar with Exchange 2010, has been since i got my desire back in March.
Very strange that so many people are having the same issue.
after a few beers
sorry this post is under the influence but...
there is a subtle problem with my synching. overall the calender syncs fine. with one exception: any diary entry i type directly into outlook, (with receipients also), does not synch. if i am sent and then accept an entry, or if i make the entry on my phone it syncs. direct outlook entry does not work. pants.
tuntang said:
sorry this post is under the influence but...
there is a subtle problem with my synching. overall the calender syncs fine. with one exception: any diary entry i type directly into outlook, (with receipients also), does not synch. if i am sent and then accept an entry, or if i make the entry on my phone it syncs. direct outlook entry does not work. pants.
Click to expand...
Click to collapse
I have exactly the same problem. If a collegue invites me, my calendar syncs fine, but if I add items myself, the sync is almost random (some items dissappear) and the new item does not show/sync.
I really do not want to delete all recurring items, but maybe i'll give it a try. Google Calendar Sync does not seem to be a great solution either.
HTC answered me (i have a Legend) that Exchange 2010 is currently NOT supported.
Thanks all, I follow the "category" method and it works like charm now!!! )))
Category.. No category... SYNC!
Thanks!
Also for me the assign category then undo worked.
Now my whole calendar is synced and I'm ready to go!
Can someone help me here please?
I have Exchange set up on my Desire. Occasionally, the last day or so's emails will not show on the phone under the inbox. They are there on the PC which is also on exchange but not the phone!
If I move the lost emails using the pc to a subfolder then back to the inbox and then resync the phone, the emails reappear on the phone's email app!
Any clues about what is going on here?
Ed
p.s. I use 4smartphone's exchange service
Are you sure none of the clients are removing the mail from the server after reading?
We have been having this problem in our office as well, without the use of phones. Some computers see all emails and others tend to make a selection. Really really annoying.
Couldn't figure it out.
I was getting this the first few days that I had the phone, in desperation I deleted the account each time and added it again. I think I did this three times in all, but I've not had it happen for sometime now. It's my own Exchange server running Exchange 2007 - I couldn't find anything in the logs to indicate a problem, and as it's not happened since I not bothered to look any further.
My wife's phone has done it a couple of times. Mine never has. We both use Activesync against my own 2010 Exchange server.
Deleting the account and re-adding seems to sort it, but is a pain. The mails are definitely there on the Exchange side. The mails seem to appear initially on the phone and then some time after (during another sync) disappear completely from the phone.
Dae
Exchange 2010 Calendar
daesimps said:
My wife's phone has done it a couple of times. Mine never has. We both use Activesync against my own 2010 Exchange server.
Deleting the account and re-adding seems to sort it, but is a pain. The mails are definitely there on the Exchange side. The mails seem to appear initially on the phone and then some time after (during another sync) disappear completely from the phone.
Dae
Click to expand...
Click to collapse
You mention you are syncing with an Exchange 2010 server. Does your Calendar also get synced?
What makes it really weird is that touchdown running on the phone doesnt bugger it up! I may email HTC just to get really annoyed and fobbed off by them....
rveupen said:
You mention you are syncing with an Exchange 2010 server. Does your Calendar also get synced?
Click to expand...
Click to collapse
Yep - the Calendar syncs.
Unfortunately the Desire doesn't support stuff like setting appointments to free/busy/out of office and if you create a repeated appointment on the phone you can't set an end date.
These are issues with the phone as a whole though, not just Exchange 2010.
Gang,
Full disclosure - I've lurked here for the past few months, but have only just been stirred to register to try and resolve this issue. I'm thinking that if anyone can help me resolve this, it's you guys. That said, I hope to be able to contribute some myself going forward.
OK, now that I've got that out of the way...
Recently, I've been having problems with recurring meetings from Exchange on my Incredible's ActiveSync calendar. Specifically, the problems seem to start whenever I modify one instance of a recurrence (move one to another day, for example) inside Outlook on my PC - (not on the phone). What seems to be happening is that although that particular changed instance shows up on my HTC calendar in its new spot, the rest of the recurrence disappears and - even worse - I can no longer get ANY recurring meetings to sync to the phone, even if I create new ones.
If I remove the ActiveSync account, delete Calendar Data (Settings > Applications > Manage Applications > Calendar Storage > Clear Data and ...Calendar > Clear Data) and re-add the account, I still have the problem and - what's worse - ALL my recurring meetings are gone (but any exceptions to them remain - WTF?!).
Before anyone asks, all recurrences have end dates (I've read plenty about recurrences w/o end dates causing problems).
To date, the only way I've found to completely fix this is to do a factory reset (yuck). Of course, the minute I modify an instance of a recurring meeting, the problem starts all over.
Anybody else see this? Provided there's no fix, is there a better way to fully flush calendar data to see if I can avoid resetting the phone? There's GOT to be something I'm missing in terms of cleaning out the calendar data, because a factory reset fixes it. Like I said above, I clear out two spots in Manage Applications: Calendar and Calendar Storage.
It's killing me. I'm clearly not doing enough by clearing data for Calendar and Calendar Storage, but I'm thinking a factory reset HAS to be overkill. Anybody know how to more fully flush the calendar data?
Thanks in advance to anyone with ideas. I'm pulling my hair out over here.
-K
I've had this problem as well, except with Google Calendar as I personally don't use Exchange.
Clearing Calendar and Calendar Storage fixes my problem, but I think the issue is that HTC had to bridge the gap left by Eclair to sync with Exchange servers. So, my thought is to perhaps try clearing the Sync Service or Sync Feeds (tired brain has trouble with memory recall) in addition to Calendar and Calendar Storage.
Good news is reports indicate that the FroYo update contains a fix baked in by HTC.
Hope that was in any way helpful.
Thanks for the advice. Tried it, but to no avail.
That said, I'm an avid Tasker user and happened across a new thread in the Tasker Google Group that sounded awfully familiar. Did some troubleshooting and was able to prove that if I have a profile that monitors my calendar (whether this profile is enabled OR disabled), the recurring meeting problem crops up. Sucks, because I really liked my "Don't be a Jerk!" profile that automatically put my phone on vibrate when I had a meeting with "1:1" in the title.
Go figure!
That is interesting to learn! I'm a fellow Tasker and couldn't live without the program.
Hmm... I wonder if a usb sync via HTC Sync and Outlook would be a temporary fix to "reset" your calendar when it goes haywire? It's rather left field, but worth a shot.
I have the same issue and not only with recurring appointments. sometimes the reminder doesn't show up -and sound- even if it's not a recurring appointment.
the funny think is that it happens only with the appointents that I created... it's becoming really frustrating.
I never connect my phone to my PC to synch it
Known issue. Reported and confirmed by HTC along time ago. They "hope" to have it corrected in new release. Work with all recurring events from outlook or OWA, don't attempt to alter, move or do anything to them from the INC.
If you use Google connector and sync to google you are OK, but pretty lame for a phone that was suppose to be exchange compatible. HTC said it's due to the "Sense" interface and the way it connects to the phone's database.
MLT2004 said:
Known issue. Reported and confirmed by HTC along time ago. They "hope" to have it corrected in new release. Work with all recurring events from outlook or OWA, don't attempt to alter, move or do anything to them from the INC.
If you use Google connector and sync to google you are OK, but pretty lame for a phone that was suppose to be exchange compatible. HTC said it's due to the "Sense" interface and the way it connects to the phone's database.
Click to expand...
Click to collapse
So HTC has confirmed there's an issue when you modify appointments from the phone? Not a big issue for me, because all I ever do is accept others' invitations and MAYBE set up a quick meeting here and there. All my calendar work is in Outlook directly. Thanks for the heads-up, though. Seems silly that a UI layer would introduce issues in database connectivity. Sounds like some of the projects that go on at work - LOL.
Wow, I just now realized that I have a similar problem: ANY recurring appointment disappears from my calendar. Regardless of how I make it recurring (on the phone, on my PC, OWA, etc.) This is positively infuriating.
I actually have the recurring meetings on my phone; however the reminder is gone and the phone is not reminding me that is very annoying. for corporate users this is an awful limitation.
I'm trying to manually add the reminder to the appointment (on the phone) and see if it helps.
xmkgenzo said:
I actually have the recurring meetings on my phone; however the reminder is gone and the phone is not reminding me that is very annoying. for corporate users this is an awful limitation.
I'm trying to manually add the reminder to the appointment (on the phone) and see if it helps.
Click to expand...
Click to collapse
I tried creating the recurring appointments on the phone, which is a pain and you have extremely limited options for recurrences. The second I saved the appointement, it disappeared from my phone, but appeared on my exchange calendar online... I'm thinking about attempting to just export my recurrences from exchange to my google calendar...
ValhallaSky said:
I've had this problem as well, except with Google Calendar as I personally don't use Exchange.
Clearing Calendar and Calendar Storage fixes my problem, but I think the issue is that HTC had to bridge the gap left by Eclair to sync with Exchange servers. So, my thought is to perhaps try clearing the Sync Service or Sync Feeds (tired brain has trouble with memory recall) in addition to Calendar and Calendar Storage.
Good news is reports indicate that the FroYo update contains a fix baked in by HTC.
Hope that was in any way helpful.
Click to expand...
Click to collapse
Clearing those two items worked for me!
I setup all my appointments with my laptop; using the phone just screws it up. then the meetings appear on the phone without reminder.
MLT2004 confirmed it's a known issue.
for me it's mainly an issue with the reminder (VERY annoying for me since I rely on it a lot) but should I need to setup meetings on the phone I would be in trouble.
I always thought it was and activsync problem. I had this problem for 2 years with my Moto Q. Haven't had my Incredible long enough to see if this one is doing it too. Then again since I don't have to use Activesync with this phone I don't. Maybe it's the Activesync that's causing all this.
So now I seem to have a new problem, and I don't mean to hijack the thread (i'll happily start a new one if the OP prefers, but I suspect taht these issues aer related): All of my exchange appointments show up perfectly in my calendar. Even my recurring appointments. The problem is, my exchange calendar is not showing up, ie, the phone seems to realize that these appointments exist, but does not seem to "see" the exchange calendar. If I open an exchange appointment, I can see that it is, in fact, in my exchange calendar. However, if i go to "more" under calendar, I can see my gmail calendar, "My Calendar," "PC Sync," and "US Holidays." If I uncheck them ALL, my exchange appointments remain, but again, I cannot "see" the calendar, to add appointments, etc.
Hello all. I've just set up my new Desire (2.2) with HTC Sync 3.0.5422. I'm synching calendars and contact with Outlook 2007. The contacts are working well both ways, but the calendar only syncs one way, from PC to phone. If I create or modify items on the phone, they do not show up in Outlook.
Anyone got any idea why this would happen? HTC Sync doesn't give any error messages, and all other sync activities seem to be working OK.
Thanks for any help!
you sure you are adding them to the right calendar on the phone? the default is a google calendar, you need to select pc sync from the drop down box (at the top of the page of create calendar item)
Thanks for the reply. Yes, I am creating them in the "PC Sync" calendar. They have the green bar next to them like the items that have come from Outlook.
no idea then sorry, but to save you some time mine did that as well. I tried reinstalling HTC Sync a couple of times and a factory reset of the phone and it still didn't work (had no issues with the previous version) so I use gsyncit now instead.
OK, thanks for trying. I don't really want to be forced to do a sync with google calendar at the moment though. Anyone got any other ideas why this might be? Perhaps a security setting in Outlook or something?
I remember you have an option to sync calendar:
- from PC to phone
- from phone to PC
- using "last updated" feature - this one suits me best.
Look at sync options in calendar view in HTC SYnc.
Thanks for that, but I don't seem to be able to find the option you're referring to. Are you talking about HTC Sync on the PC (version 3.0.5422)? Where are the "Options"?
Here:
Uploaded with ImageShack.us
Oh right. Yes, I've tried all three settings on that, but I think that's only to do with items that have been updated on both devices prior to sync, so it know which one takes priority. Thanks for the suggestion though.
Has anyone out there managed to get 2 way calendar sync with Outlook 2007 and Desire 2.2 using HTC Sync 3? I've now seen many posts on other forums about this exact same problem, but they don't seem to be getting resolved!
Just another quick advise.
A story first: I have had a lot of redundand meetings in my Desire callendar. So I decided to make a cleanup of callendar entries by simply clearing the calendar cache. Succesed, but..
Seems like no longer meetings what were in my exchange (2003) up to cache deletion were able to re-sync. I discovered that new entries - just added after the cleanup have been imported successfully. Seemed like to only good solution was to format the phone to re-start the calendar service blank. But, I have installed the Google Sync tool and synced Outlook with Google calendar (I know, privacy etc...). It worked. I uninstalled the Sync tool and now I have all my "old" meetings in Google calendar, and new meetings being directly sync through HTC Sync.
Maybe you try to sync through Google?
Or just try to install the previous version of HTC Sync (2.x)
regards
r
Well, I logged this problem with HTC tech support, and after going through the usual checks, they've admitted that there is a problem with HTC Sync:
"This is a problem with HTC Sync 3.0 and is under investigation and a new version will be out soon.
Please keep checking our website for when the update comes out."
A shame really, as it seems to do everything else just fine for me. Hopefully they will fix it soon. Thanks everyone for their suggestions.
I had so many problems with HTC Sync, I did away with it and use a combination of Google Calendar Sync and MyPhoneExplorer for contacts. so far everything it syncing nicely.
I'va just tried the latest version.
The first time it did work.. but the second time I got an error and I had to restart htc sync. Since that error htc sync stopped to sync events from phone to PC.
Seems to be fixed with new version of HTC Sync
Yesterday an update was available to HTC Sync, bringing it up to version 3.0.5481. This seems to have fixed the problem I was having, meaning that calendar entries I create/edit on my phone are now synced back to my PC Outlook Calendar.
This doesn't seem to be mentioned in the release notes, but it now seems to be working for me, so I'd recommend upgrading if anyone else is having this problem!
Lee
Still not there
I am on 3.0.5481 but still exact same problem: existing calendar entries are not synched. Only the new created ones get synched.
In HTC Sync 2 there was a "repair" option to force a complete synch from PC to Phone (or viceversa), but I have not found Repair in the new V3.
If anyone gets any news please update the thread. I guess there are lots of people who would like to be able to synch all their existing meetings.
Can someone with the latest version confirm that the following issues are fixed?
Corruption of email addresses that stops outgoing mail from Outlook being sent
Corruption of phone numbers stopping phone from sending texts
Cannot use HTC Sync on more than one PC - eg work and home
Have you looked at 3.0.5481?
John
spile said:
Can someone with the latest version confirm that the following issues are fixed?
Corruption of email addresses that stops outgoing mail from Outlook being sent
Corruption of phone numbers stopping phone from sending texts
Cannot use HTC Sync on more than one PC - eg work and home
Click to expand...
Click to collapse
Had an email from HTC to say that the app will now work on more than one PC!
Still worrried about the other two and as MPE is working well at the moment am not tempted to try it.
Working again.
remmyhi said:
I discovered that new entries - just added after the cleanup have been imported successfully.
Click to expand...
Click to collapse
I was having the exact problem mentioned: Outlook calendar stopped syncing properly using HTC Sync even though contacts were syncing just fine. After reading this I tied adding new entries to my Outlook calendar and sure enough they were added to my phone. Went through and remade all of my future appointments and now my calendar seems to be in order again.
Does anyone know what the hell caused this?
(Also, my signature needs updating!)
If you give up on HTC Sync you might want to look at MyPhoneExplorer as an alternative. I find it a lot less destructive.
Hi all,
I've seen multiple cases where Desire starts to show every appointment in double, even though there is only one appointment on outlook side. We are syncing directly to Exchange 2003, so no google mail or direct pc sync.
Problem comes randomly and is fixed by deleting exchange account, deleting cache from Calendar + Calendar storage and then adding exchange account back.
Any idea what could be the cause of this problem?
Also problems with recurring calendar entries
I have a monthly recurring event in my Outlook agenda, every 4th working day of the month I get a reminder to do some administration.
After using Exchange ActiveSync (I only sync over the air), I get this entry on a daily basis. I already deleted and recreated it on the PC and it was only correct after the first sync. After that, I have the daily entry again.
I really like the phone, but MS does a better job in some specific areas (mostly for the business users).