Hello,
we are running Navision 2016 on a windows server 2016 OS.
After installing the cumulate Patch from January 2022 our web service brings an error.
I found this: KB5011233: Protections in CVE-2022-21920 may block NTLM authentication if Kerberos authentication is not successful (microsoft.com)
It seems that we have a authentication problem. Because we have enabled NTLM inside the NAV instance.
But when I now disable NTLM it still will not work.
I can see inside the events errors from LSA:
"The program Microsoft.Dynamics.Nav.Server.exe, with the assigned process ID 10036, could not authenticate locally by using the target name HTTP/xxxxx:7147.
The target name used is not valid. A target name should refer to one of the local computer names, for example, the DNS host name."
It is still there. I put an SPN in for the Navision server, but has not worked.
Did anyone have the same problem or have an idea for the solution?
Best Regards
Frank
