Unable to authorise ArcGIS 10.3 installation

[DanielleEvanson]

I'm sure this is a very simple question, but I've searched ArcGIS Administrator and Help and Support&Services to no avail.

I've installed ArcGIS 10.3 (Education trial, single use) but when I try to run ArcMap I get the following message: license manager running on host "Not_Set". When I go to ArcGIS Administrator it says "Not_Set" is an invalid host name, takes me to a box about concurrent use license and says I have 0 licenses and 0 available for ArcGIS Desktop Advanced 10.3.1. When I click on the data licenses box it is blank. See attached screenshots.

Not sure if my network administrator selected the wrong type of license; he doesn't think so.

Do I deauthorise? Uninstall? WIll my authorisation code still work?

[DanPatterson_Retired]

did you get an EVA code?

[JayantaPoddar]

In ArcGIS Administrator, try switching to the appropriate Single Use license (NOT concurrent license). If the license is authorized successfully, it should show up in the availability.

[DanPatterson_Retired]

Wrong place to check first... make sure the administrator set up the correct license though

[DanielleEvanson]

Yes, I looked there but it won't let me change anything. I did get an EVA code.

[JayantaPoddar]

Close all ArcGIS Desktop Applications. Make sure no ArcGIS application is running in Task Manager. Then, Run (as Administrator) ArcGIS Administrator.

[DanPatterson_Retired]

so close... success is coming

[DanielleEvanson]

I right clicked on ArcGIS Administrator, run as administrator, logged in as admin, then nothing happened. It just went back to the screen I was on before. Tried opening Administrator but it gives the same screen as I attached before. 😞

[JayantaPoddar]

How about you reboot your machine and try again?

[RebeccaStrauch__GISP]

When you ran it as Administrator and are pointing to a "Single Use" option for your license level, does the "Authorize Now" become active? 

If the options are still grayed out, even when using "Run As" you may not have the permissions to modify this.  Talk with your IT folks.  There are ways to modify the register to override this, but again, if you don't have the admin permissions, you may not be able to do that either, and messing with the register is always the last resort (and must be done carefully, since there is no undo and it can mess with the OS if done incorrectly.)