We are running Exchange 2007 SP2. We installed SP2 last month with no problems. This month we installed Rollup 4. We have 2 CAS servers which are load-balanced and today we are getting calls that some of our users don't get the form when they bring up OWA. They get a black box with a red x in the corner. They can still log in and everything is normal once they log in. We have narrowed it down to one of the CAS servers and have temporarily removed it from load balancing. I do not see any errors in the event log pertaining to this issue. Has anyone else had this problem and knows how to resolve it? I am opening a ticket with Microsoft but wondered if anyone has already seen and resolved this one. I am not finding a solution on the web for this. Thanks!
Software/Hardware used: Exchange 2007 SP2 Rollup 4 on server 2003 R2 SP2
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