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The connection to microsoft exchange is unavailable on Reply All

When i click reply all in outlook 2010, i received this error:
The connection to microsoft exchange is unavailable.
i can click reply but not reply all to messages.
what should be the reason?

this outlook 2010 client in connected to a microsoft exchange 2010. I have restarted the Microsoft exchange address book service, but that hasn't help?

Please advice!
Abbas Haidar
Abbas Haidar
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1 Solution

have you upgrade your exchange 2010 sp 1?
Patch to the latest updates and see. Also try removing the profile and creating it once again.
Abbas HaidarAuthor Commented:
I just installed the SP1 for exchange. I will test tomorrow and let you know!
Abbas HaidarAuthor Commented:
Installing exchange 2010 SP1 sorted out the problem.

many thanks

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