Logon/Logoff Issues with Citrix Profile Management and Opportunistic Locks (OpLocks)
Article ID: CTX237233
Updated On:
Description
- Slow Logon's
- Slow Logoff's
- Sessions never logoff (until the Lock is removed)
- Sessions never logon (until the Lock is removed)
- Temporary Profiles
Environment
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Resolution
Disable the OpLocking on the File Server
Problem Cause
The Citrix Profile Management Driver, UPMJIT.sys, is not OpLocks aware. When UPMJIT.sys is tasked with copying a file to/from the File Server for the profile - OpLocks will lock the file, which is reserved for local caching, and Citrix Profile Management will try and wait for the file to become unlocked.
Citrix's Profile Management driver will normally wait for the requested file(s) to become unlocked - but does not have the authority to remove the lock - and sometimes will wait indefinitely as this is a task that the driver must fulfill. If the driver is unable to fulfill the request - the behavior experienced can include:
- Slow Logon's
- Slow Logoff's
- Sessions never logoff (until the Lock is removed)
- Sessions never logon (until the Lock is removed)
- Temporary Profiles
Additional Information
More Information about Opportunistic Locks (OpLocks):
- https://docs.microsoft.com/en-us/windows/win32/fileio/opportunistic-locks
- https://docs.microsoft.com/en-us/windows/win32/fileio/types-of-opportunistic-locks
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