Hi,
normaly the event-id 20491 issue should be solve with this update: KB3192404 (Preview of Monthly Rollup)
But we have this problem still. (on Windows 2012 R2 fullfixed)
Addressed issue where the user profile disk (UPD) does not get unmounted when a user logs off. Therefore, users get temporary profiles and are not able to work with their own profiles during their next logon. The Event ID 20491 with a description of“Remote Desktop Services could not disconnect a user disk for the user account with a SID of <SID>. The error code is 0xAA.93 (or error Code: 0x91.38)will be logged
The behavior after event ID 20491 is different for us. Either a temporary profile is created or the profiles are given consecutive names such as <username>.001, <username>.002 and so on.
BUT the effect does not occur every time you log off. There are days/hours when the logoff works including deleting the local userprofile!
Hint: The UPD is stored on a SMB V3.x share. Offline-Cache and other tricky features are disabled on this share.
How can I fix this error?
Thanks for your help!
Danke und liebe Grüße Oliver Richter