All configured connectors had correct settings in the GUI and ran. Suddenly none of the Connectors work.
The License is valid and no changed have been made to the environment
This was caused by an Antivirus application running. The Directory Connector was not excluded.
At some point the file was locked and Coexistence Manager for Notes' [CMN], Directory Connector, attempted to access it or vice versa causing the corruption.
This will be resolved by one of the following:
1) Removing the AntiVirus [AV] application from the CMN Server
2) If Removal of AV is not possible, then set the following exclusions