Veeam Backup & Replication 9.5: Impossible to add hyper-v host to backup infrastructure (Network path not found, or invalid credentials supplied)

Question

In the software Backup & Replication 9.5 it was not possible to add the local Hyper-V host (standalone) to the backup infrastructure:

Always gives an error "Network path not found, or invalid credentials supplied."

I tried first these tipps: https://www.veeam.com/kb1230
But this solved not my issue...
With a process monitor I saw the application "Veeam.Backup.Satellite.exe" tries to access the file system *\;RdpDr\;:0\192.168.x.x\ADMIN$* with an error "BAD NETWORK NAME".

Answer 1

After a long time I could now find the solution myself:
In the Local security Policy->Local Policies->Security Options->
Network security: Restrict NTLM: Incoming NTLM traffic was the value set to Deny all accounts.
After set the value to Allow all it works now :-)

Answer 2

I had the same problem - getting this error when trying to add a Hyper-V standalone host. My host was running Server 2016 Hyper-V edition (free hyper-V / console only OS).

Found the error to be inability to access the admin$ share... run this command from the host:

netsh advfirewall firewall set rule group=”File and Printer Sharing” new enable=Yes 

Worked immediately for me after that!