When licenses are near expiring or have already expired, warning messages are displayed when starting ArcGIS applications. The instructions in this article describe how to disable the warning messages.
Note: The workarounds in this article must be performed by an Administrator, or with a Windows account with full administrative privileges.
Disable the timeout warning via ArcGIS Administrator
Disable the timeout warning via the Advanced ArcMap Settings utility
Note: The following workaround can only be performed by an Administrator, or a Windows account with full administrative privileges. Under certain network configurations, the Advanced ArcMap Settings utility may not be visible to non-administrative accounts.
ArcGIS Desktop 10.x: C:\Program Files (x86)\ArcGIS\Desktop10.x\Utilities\
Warning: Disabling warning messages does not prevent a license from expiring. Contact Esri Customer Service to acquire a new license if needed.