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Login failed for user in MS SQL sensor (user really have rights...)




I got the error "Login failed for user COMPUTERNAME\Administrateur" when I try to monitor Microsoft SQL.

The account is in local administrators group and work fine with WMI monitoring.

If I connect (from the computer which have the PRTG service installed) with Microsoft SQL Management Studio, I can connect successful with the credentials provided in PRTG (COMPUTERNAME\Administrateur), with the TCIP/IP protocol and the default port. When I log into the SQL server I have all rights (sysadmin)...

The question is why PRTG show this error? What I do wrong?

We're trying the version

Thank you !


login-failed ms-sql mssql prtg sql sysadmin

Created on Oct 7, 2010 6:15:48 AM

2 Replies



Dear Johan,

under which user account is the PRTG Probe Service running? Is the the default account "LOCAL SYSTEM"? If so please try another account which has the proper permissions to connect to the target SQL-Server.

Best Regards.

Created on Oct 11, 2010 11:32:59 AM by  Torsten Lindner [Paessler Support]




Yes it was LOCAL SYSTEM. But if I change this value and put an account on domain which have full rights on the database the error is exactly the same...

Best regards.

Created on Oct 11, 2010 12:06:05 PM

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