MID Servers goes down after getting stuck in "validating" state for 10-15 mins.
The validation because the user account used for validation doesn't have the required access permissions. The MID Server service has a configured dedicated user, however, the user is not enrolled in the admin group due to which the user did not have the required permissions.
MID Server requires an admin user for validation. The above solution switched the user to local admin to validate the MID Server and then configure the dedicated MID Server user once MID Server is validated.
The following steps are for the MID Server on a Windows Host OS.