On Windows server 2003 R2 64Bit occasionally an error occurred... and the process calling the search hanged, stopped working and the server didn’t respond anymore.
'The protocol handler Search.Mapi2Handler.1 cannot be loaded. Error description: Class not registered'
The problem here is that windows is using two processes wo search for files:
- 32Bit search (not installed on 64bit servers)
- 64Bit searh (default installed)
Solution: ''regsvr32 c:\windows\system32\mssph.dll'' to register 32Bit version.