错误：出现未知错误。 请联系您的管理员以检查许可管理器正在使用的许可是否有效

错误消息

When attempting to log in to ArcGIS Pro with an organizational account, the following error message is returned:

Error:   
An unknown error has occurred. Contact your administrator to check that the license manager is running with valid licenses.

原因

This issue occurs when incorrect ArcGIS Online or Portal for ArcGIS URLs are stored in the system registry.

解决方案或解决方法

To resolve the error, update and specify the correct URL address in Windows Registry Editor.

Warning: 
The instructions below include making changes to essential parts of the operating system. Esri recommends performing a backup of the operating system and files, including the registry, before proceeding.

Esri cannot guarantee results from incorrect modifications while following these instructions. Exercise caution. Consult a qualified computer systems professional if necessary.

1. Close all the ArcGIS applications on the machine.
2. Open the Windows Start menu.
3. In the search bar, type regedit and press Enter. If prompted, click Yes in the User Account Control window.

4. In the Registry Editor window, expand HKEY_CURRENT_USER > Software > ESRI > ArcGIS Online for Pro > SignIn.
5. In the SignIn folder, update the URL values for HomeServerURIFile and AuthorizationPortal to direct to the correct ArcGIS Online or Portal for ArcGIS URL addresses.

6. Open ArcGIS Pro, and log in with the organizational account.