I am receiving the following error when trying to access a HTML5 Dashboard login. I have used the Chrome and Firefox browsers.
I have connected to a client's VPN to a jumpbox that does a round robin to 1 of 8 DMAs in a DMS. This has been working for a year but it is possible the customer has made changes on their end.
I can connect via the standalone cube but not with a browser.
I am not sure what to troubleshoot from this message. Is it DataMiner or is it a possible network issue. 
Dave Keller [DevOps Enabler] Posted new comment 10th May 2023
I believe I solved the issue. This DMS had a license change and the Dashboard license had removed in the new license.
Randy Ulvenes [SLC] [DevOps Advocate] Selected answer as best 24th February 2023
Just to bump this thread a little, I’ve just experienced something similar. We have 6 DMAs and a local user account could only authenticate on dashboards with 2/6 DMAs. Domain accounts authenticated fine.
I changed the password of this local account, to be the same password, and then dashboards were able to log in to all 6 DMAs again.