Hi,
I too saw this error on 3 out of 15 powerful Generators during a heavy load Citrix Test. All I know about this error is:
a) Associated Messages:
Error -91968: Unable to create screen snapshot. CloseHandle failed.
Error -91968: Unable to create screen snapshot. CreateFile failed, last error = 3, pcFilePath=
Error -91968: Unable to create screen snapshot. Failed to retrieve the ICA Client bitmap. Reason "The RPC server is unavailable in GetFullScreenShot
Error -91968: Unable to create screen snapshot. WriteFile failed.
b) It occures usually due to heavy load on the box. I had about 95 Users running on those machines.
c) CPU and Memory might look very stable. Guess this might be due to graphic resource contention, rather.
d) We could resolve it by implementing the following changes:
- Removed check from "Generate Snapshot on Error".
- The second last argument of all ctrx_sync_on_windows, we removed the snapshot file name and inserted a blank argument "" (pair of inverted commas with nothing in between).
- Never encountered this demon thereafter. :)
SAMEER RAJIMWALE.
