Hi Singi,
If a session host doesn’t have an entry in the WVDHostRegistrations
table, it means that the registration activity of that session host with the AVD service was not logged. However, this does not directly impact the session host’s functionality or availability. As long as you see the session host listed as available in the host pool blade, it should be operational. The Log Analytics data, including the WVDHostRegistrations
table is primarily used for tracking and auditing purposes.
https://learn.microsoft.com/en-us/azure/azure-monitor/reference/tables/wvdhostregistrations
If this answers your question, please click Accept Answer and Yes if this answer was helpful. Doing so would help other community members with similar issues identify the solution. I highly appreciate your contribution to the community.