Streamed VDAs Bluescreen a Few Minutes After Booting
Article ID: CTX247843
Updated On:
Description
Streamed VDAs blue screen a few minutes after booting.
The targets stream a vDisk that also has the VDA software installed on it.
Environment
Caution! Using Registry Editor incorrectly can cause serious problems that might require you to reinstall your operating system. Citrix cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. Be sure to back up the registry before you edit it.
Resolution
Remove the MCSIO drive from the vDisk, which is installed together with the VDA software .
1. Create a new vDisk version and boot it in maintenance mode
2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e967-e325-11ce-bfc1-08002be10318}, find UpperFilters key with CtxMcsWbc in it. Remove *only* CtxMcsWbc line from UpperFilters and keep other lines.
3. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CtxMcsWbc, set Start=4.
4. Shut down the target.
5. Promote the vDisk to production.
Problem Cause
When installing the VDA software on the vDisk, the Machine Creation Services Storage Optimization (MCSIO) driver is installed on the image and conflicts with the provisioned target write cache drive.
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