we tried to upgrade arcgis server 10.6.1 to 10.8.1. we started from the portal, as recommended
but after running the portal, we tried to reauthorize, but this error pops up:
The existing portal could not be upgraded directly from 10.2 to 10.8.1. Upgrades from 10.2 are no longer supported.
that is very weird, because our current arcgis server is 10.6.1 not 10.2. so I have no idea why this error show up.
the os we use is windows server.
I would recommend you to connect with your local Esri Support to work on the issue. They can work closely to find the root cause of the issue, and help in its resolution.
By the way, I hope you have obtained the JSON authorization file for ArcGIS Portal 10.8.1, to authorize your portal.
Was ArcGIS Portal 10.6.1 running fine prior to its upgrade to 10.8.1?
Earlier, ArcGIS Portal 10.6.1 was a fresh install or upgraded from older version?
yes we have the json authorization file from esri, and we tried reauthorize with that json.
the previous version was 10.6 then upgraded to 10.6.1., which both support direct upgrade to 10.8.1