Unable to start execution of step 1 (reason: Error authenticating proxy ‘windowsNT\Vinay’, system error: The security database on the server does not have a computer account for this workstation trust relationship.). The step failed.

We are having few SQL job which runs SSIS packages. They were running fine from many days and all of a sudden today they started failing with below error:

Unable to start execution of step 3 (reason: Error authenticating proxy windowsNT\Vinay, system error: The security database on the server does not have a computer account for this workstation trust relationship.).  The step failed.

The windows login ‘windowsNT\Vinay’ is having access to SQL server and having DBO permission given on all the required databases. When verified the windows login is active in Active Directory also. Verified all the System, SQL logs and didn’t found any critical errors. The situation became much critical that all the jobs which are running SSIS failed with same error and they are the must to be run jobs.

After verification only thing noticed is SQL services have been re-started a day prior but no errors reported before or after the reboot. But the error says some where the login is missing the authentication keeping this in mind I have verified the SQL services and noticed they are running under ‘NT Authority\Network Service’ which is not normal, the services were supposed to be running under ‘windowsNT\Vinay’ account. After a quick confirmation I have changed the SQL services to run under ‘windowsNT\Vinay’ account. After restarting the SQL services, I have re-started the jobs which were failing earlier with the error. Now all the jobs started running fine without any error and completed successfully.

If you are receiving this error while logging into server itself then many of the forums have suggested to rejoin the domain. But in my case I was able to login to server without any issue but only issue is my SQL jobs were failing.

Thanks!!