We have a Windows 10 1809 image and any attempts to attach an appstack directly to the desktop fail with a "timed out error after 180 seconds" and "Waiting for 1 new volumes before resetting order". We checked the logs and can see that authentication and certificate validation is being done successfully, but when mounting the stack to the desktop it fails and times out. However, within the manager activity logs we can see that it "successfully" mounted the appstack to the desktop/user. Also, the appstack shows as "attached".
We've tried uninstalling/reinstalling the agent. No go.
We have a provisioning desktop that appears to work perfectly...we can attached multiple appstacks no problem. Within the registry HKEY/LM - I can see a Snapvolumes key with no images attached. Attaching another appstack creates a second Snapvolumes registry entry.
We are running Horizon Agent 7.8, UEM agent and app volumes agent on the master image. Provisioning box only has app volumes agent. Could Horizon agent/UEM possibly be causing an issue?