Connection issue with error ConnectionFailedReverseConnectStackUnexpectedError

[Deleted]

Today I was experiencing a lot of connection issues on WVD Pool through the Remote Desktop App (Error code 0x3000047). After searching what was causing issue, I've found this in Log Analytics:

Code
-2147024891

CodeSymbolic
ConnectionFailedReverseConnectStackUnexpectedError

Message
Path Access denied

ServiceError
true

Source
RDAgent

Time
2020-12-01T18:27:04.9960000Z

WVD is running fine since months.

Experiencing some performance issues with OneDrive and FS-Logix last 10-15 days. Today this problem occurs and I could connect only sporadically to WVD-Pool.

Any suggestion ?

[#2]

I've opened a Microsoft Case for all these disconnection/connection problems. Read some blogs that pointed to network problems related to NAT Gateway. Someone using NAT Gateway together with a pool of virtual machine and experiencing same problems?