For your ArcGIS Enterprise portal to function, it must be the same version as your hosting server.You can access your new authorization files in My Esri. If you're upgrading to 10.8.1, you'll need to reauthorize your software with a new authorization file for 10.8.1.See the full list of frequently asked questions for upgrading ArcGIS Server.
Prepare to upgrade ArcGIS Serverīefore upgrading, carefully review the following information. You should consider your ArcGIS Server site to be offline during the upgrade. The upgrade process will restart all of your ArcGIS Server services.
