It is not unusual for your network security guys to force
regular password changes. What is unusual is that once you changed
your password you can no longer run NAV RTC. And receive the
obscure message

Equally frustrating is that NAV Classic still works.
You will also see Event Log errors like this one on the NAV
Server Tier

What's happening is your connection details have been cached
(without you realising)
You can remove this cache entry by running the command
rundll32.exe keymgr.dll, KRShowKeyMgr
And then deleting the connection that represents the NAV Service
Tier
