Version of vendor daemon is too old

Error Message

In some instances, attempting to launch ArcMap fails and returns the following error message.

Error:  
Version of vendor daemon is too old.

Cause

The versions of ArcGIS Desktop and ArcGIS License Manager installed on the machine are different.

Solution or Workaround

Note:
To identify the version of ArcGIS Desktop products installed on the machine, download and run the PatchFinder utility.

To resolve the error, install a new version of ArcGIS License Manager and ensure it runs the same version as ArcGIS Desktop. Refer to ArcMap: Installing the license manager for steps to install the license manager.