Great job, Paul, and thank you!
Information Store won’t mount after removing Anti-Virus software
by Matthew Pusey on June 12, 2011
We all know Exchange doesn’t exactly Anti-Virus software and realtime scanning to begin with. However, it looks like in Exchange 2010, it doesn’t even like it when you remove it! There is a registry setting that needs to be manually changed or the Information won’t start and you’ll see a lot of this in your event logs:
The fix is in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\VirusScan
Make sure this value is set to 0(Zero) and then exit out of the registry. The information store service will now start.
