I noticed after upgrading to VMware Horizon View 7.8 and VMware Unified Access Gateway 3.5, when attempting to log in to a VMware Horizon View Connection Server via the Horizon Client, I would get stuck on “Authenticating”. If using the HTML client, it would get stuck on “Logging in”.
This will either timeout, or eventually (after numerous minutes) finally load. This occurs both with standard authentication, as well as 2FA/MFA/RADIUS authentication.
Originally, I thought this issue was related to 2FA and/or RADIUS, however after disabling both, the issue was still present. In the VDM debug logs, you may find something similar to below:
2019-03-19T16:07:44.971-06:00 INFO (1064-181C) UnManagedMachineInformation Wake-on-LAN packet sent to machine comp.domain.com
2019-03-19T16:07:34.296-06:00 INFO (1064-17F0) UnManagedMachineInformation wait ended for startup update, returning false
2019-03-19T16:07:34.296-06:00 INFO (1064-17F0) UnManagedMachineInformation Could not wake up PM comp.domain.com within timeout
The apparent delay “Authenticating” or “Logging In” is caused by a Wake On LAN packet being sent to an unmanaged physical workstation that has the VMware View Agent installed. This is occurring because the system is powered off.
After powering on all unmanaged View agents running on physical computers, the issue should be resolved.