Elastic layer not attached - (0x80004005): The semaphore timeout period has expired

[Alexey Kutuzov1709163409]

Hi All,
Came accross with an issue when occasionaly one or a few elastic layers are not connected to a pooled desktop on a user logon.
If the user makes a new logon immediately then all elastic layers attached successfully. 
I found the following error in the log:

2023-10-31 08:10:48,717 ERROR 14 NativeMethodLogger: Failed to attach virtual disk '\\fs.domain.com\VOL1_ElasticLayer\Unidesk\Layers\App\P1212498.R1.vhd' with options 'ReadOnly, NoDriveLetter, Permanent': Error code 121
2023-10-31 08:10:49,014 ERROR 27 CompositingManager: Could not load disk 'Unidesk/Layers/App/P1212498.R1.vhd', but continuing anyway
2023-10-31 08:10:49,014 ERROR 26 CompositingManager: Could not load disk 'Unidesk/Layers/App/P1212498.R1.vhd', but continuing anyway
2023-10-31 08:10:49,014 ERROR 6 CompositingManager: Could not load disk 'Unidesk/Layers/App/P1212498.R1.vhd', but continuing anyway
2023-10-31 08:10:49,014 ERROR 21 CompositingManager: Could not load disk 'Unidesk/Layers/App/P1212498.R1.vhd', but continuing anyway
2023-10-31 08:10:49,029 ERROR 21 CompositingManager: Caught exception: 'System.ComponentModel.Win32Exception (0x80004005): The semaphore timeout period has expired

 

Please, advise what to check.

[Rob Zylowski]

This is something we are working on sometimes the file server is too busy to mount the layers.  No ETA yet.