Task Agent Issues

Yesterday our Task Agents became a little wonky, so I tried restarting them to no avail. So I did a quick reboot of the server and everything seemed fine. But when I get to the office this morning, it seems that the issues are popping up again. I receive this error when trying to start or stop any of the task agents.
image

Anyone run into this type of issue before?

EDIT WITH ADDITIONAL INFORMATION
When I look in the Event Viewer, I am seeing this appear when I try to start the Task Agents:

Service authorization failed.
 Service: net.tcp:/*******.***.local/E10Production/Ice/Lib/RunTask.svc
 Action: Ice:Lib:RunTask/RunTaskSvcContract/RunTask
 ClientIdentity: NT AUTHORITY\SYSTEM; S-1-5-18
 AuthorizationContext: uuid-b09036d8-203b-424a-8a7d-b15f4783289a-11
 ActivityId: <null>
 ServiceAuthorizationManager: AuthorizationManager
 FaultException: This account is disabled.

This apears multple times, with only the numbers after the last ‘-’ for the AuthorizationContext UUID.