Win Svr 2019 shutdown stuck in "Please wait for System Event Notification Service" and explorer freezing

Question

Hi,

We have two Win Servers 2019 (first ones in environment) with Azure File Sync as targets for DFS shares.
Both servers have an issue where out of nowhere Windows stops recognizing the second disk where files are stored, the explorer is freezing and the only way to restore it to normal is boot.

But then, it gets stuck on "Please wait for the System Event Notification Service" forever (waited for 2 days already) having to force power off.

I've searched some foruns and this seems to be recurring issue on older versions (from 2008 and on), but most of them happened when logging in/out through RDP and this happens even when accessing through the console (both are VMs in Nutanix AHV).

Have anyone faced one of this issues or have any tips?

Answer 1

Another info, yesterday I went through Event Viewer but didn't find anything strange, except for a lot of DeliveryOptimization warnings with the following message:
"The policy DOGroupID was set with the value ", which is invalid and will be ignored."

Also ran a "sfc /scannow" which did point there were some corrupted files but wasn't able to fix them. Ran the "dism.exe /online /cleanup-image /restorehealth" but once it reached 100% it never completed the process, so I left it there processing until today.

But didn't work also, just logged onto one of the machines to find it with the same symptoms: On "This Pc" the disk appears but without space information, tried opening Disk Management but it is stuck at "Connecting to Virtual Disk service..."

Answer 2

@thi_sec Firstly, apologies for the delay in responding here and any inconvenience this issue may have caused.
If "sfc/scannow" couldn't complete i.e there is some issue with the system files that would be corrupted. I would recommend getting in touch with the support, Based on the error message and your description ultimately, it looks like the error is coming from the server. this is not related to the Azure File Sync issue. If the explorer is continuously freezing, then you'll need to talk to the server team, I don't think we've ever seen this issue before so I don't have any recommendation on Azure files beyond that.