Upgrade Office 2003 ->2010 calendar problems

We did a mass upgrade of 2003 to 2010, during the install I selected to remove the old version. Some people are experiencing problems with their calendars. It doesn't show anything past a certain week. If you close it out and reopen, problem goes away but later returns again. I have created new outlook profiles for some but this has not worked at all. They are connecting like any other outlook client and Outlook Anywhere is enabled. On exchange proxy settings tab we have connect using ssl only is checked but shadowed out, only connect to proxy servers that have this principal name in their certificate. And on slow networks connection using http first then connect using tcp/ip
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stlhostAsked:
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AmitIT ArchitectCommented:
What is your Exchange server version and SP level? Did you also installed all latest office 2010 related updates? And what is the client end OS?
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stlhostAuthor Commented:
Windows 7 64bit. Our 2010 clients have all the latest updates applied. Exchange is behind in updates ( Version 14.1 (Build 218.15)    0.1 (8.0.535.0), if I need to upgrade it I need documentation or an article from microsoft to show management that it is required to fix the problem.
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JohnBusiness Consultant (Owner)Commented:
My Outlook 2010 (all up to date but not Exchange) is version 14.0.7149.  

Is your Office 64-bit or 32-bit?  I know your Windows 7 is 64-bit as is mine.
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AmitIT ArchitectCommented:
That is too old Service pack you are running. It also out of MS support. Move to SP3 with RU8 or 9. Here is RU 9 link
http://www.microsoft.com/en-us/download/details.aspx?id=46372

For steps, follow my article.

http://www.experts-exchange.com/articles/10389/Steps-for-Upgrading-Exchange-2010-SP1-or-SP2-to-SP3-with-Latest-Rollup.html

It seems you have only one server, if so follow phase 1 steps.
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stlhostAuthor Commented:
Thanks, but as I stated I can't upgrade our two exchange servers without something that proves older versions of exchange are causing an issue. Management seems to think this is merely an opinion, not a fact or expert solution.  

So once again I am stuck :(
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AmitIT ArchitectCommented:
I suggest, check with Microsoft. First thing they will tell you to upgrade your servers to latest service pack.
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stlhostAuthor Commented:
Yes, I know.  Majority of the company is working fine only a handful of users are having an issue so this is why they won't upgrade. All I can do is go back to these machines and completely uninstall office products, reinstall or reissue new workstations.

Thanks anyway
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AmitIT ArchitectCommented:
That also a best option, or you can ask them to login via different machine.
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stlhostAuthor Commented:
Instead of replacing the workstations we replace the users profile by deleting it and re-creating it.  Problem went away
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stlhostAuthor Commented:
Self troubleshoot. As stated in the message above I cannot upgrade our exchange system for only a few people who have a problem out of thousands of people who do not have this problem.
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