WVD outage / hosts unavailable with status "NoHeartbeat"

Last night, our WVD instance became unavailable, with clients unable to connect. The initial error is "ConnectionFailedNoHealthyRdshAvailableErrorMessage", and looks like the RD server / endpoint is ...

DanRobb
Nov 25, 2019
Nicholas Semenkovich
These are the steps I followed:

1. Remove the session host from the host pool:
Remove-RdsSessionHost -TenantName [TenantName] -HostPoolName [HostPoolName] -Name [SessionHostName] -Force

2. Get the host pool registration token (replace with New-RdsRegistrationInfo if the token has already expired)
Export-RdsRegistrationInfo -TenantName[TenantName] -HostPoolName [HostPoolName] | Select -Expand Token

3. Log into the session host and update the following registry keys:
Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RDInfraAgent
Name: RegistrationToken
Value: Token Goes Here

Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RDInfraAgent
Name: IsRegistered
Value: 0

4. Restart the RDAgentBootLoader service