Basically, when you try to install or update Microsoft Office returns you with this Error code 1921. Many users reported that they encountered this Error message “ERROR 1921: Service ‘MDM’.
In this scenario, verify if you have sufficient admin privileges to stop the system services.
In this scenario, verify if you have sufficient admin privileges to stop the system services.
https://www.officelivesupport.com/fix-error-code-1921/
Basically, when you try to install or update Microsoft Office returns you with this Error code 1921. Many users reported that they encountered this Error message “ERROR 1921: Service ‘MDM’.
In this scenario, verify if you have sufficient admin privileges to stop the system services.
