HI
My license manager runs on 10.1.
On one another machine I have upgraded to 10.5.1. But it does not allow me to access the license manager running on 10.1 with an error: ArcGIS for desktop /engine 10.5 cannot connect to previous versions of ArcGIS Lic Manager.
Please ensure that the ARCGIS Lic manager is 10.5 or above.
Do I need to upgrade the Lic manager also to 10.5.1?
Please suggest
HI there
You need to upgrade the License Server Admin to 10.5.1
Existing users—License Manager Guide | ArcGIS Desktop
As a side note Support for 10.1 ended at the start of this year.
I would look to upgrade the 10.1 clients when possible as well.
Cheers