Exchange 2007 Information Store Won’t Start, error 0x3ee

Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 9564
User: N/A
Description: Error 0x3ee starting the Microsoft Exchange Information Store. Failed to init VSERVER.

1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. In Registry Editor, locate the following subkey in the registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\VirusScan

4. In the right pane, double-click Enabled.
5. Click Decimal, type 0 in the Value data box, and then click OK.
6. On the File menu, click Exit to quit Registry Editor.
7. Start the Information Store.