Original User: crafty762
How many machines participate in your ArcGIS for Server site? If there are multiple machines joined to a single site, please verify that you have used the same account name and password to run the ArcGIS for Server service on all machines. If it's a single machine site, then try adding the arcgis local account to the "Log on as a service" policy. From the Start menu, search for and open Local Security Policy. Expand "Local Policies" and click on user rights assignment. Double click the Log on as a service policy and add your arcgis account to the group. You'll need to click on Locations when inputting the username in order to search the local machine rather than the domain. After clicking the Check Names button, you should see something like this: HOSTNAME\arcgis