Event Log SharePoint SharePoint Server SQL Server Troubleshooting 

Event ID 3351: SQL database login failed. Login failed for user ‘NT AUTHORITY\ANONYMOUS LOGON’.

Salaudeen Rajack 0 Comments

After joining a new server to an existing SharePoint farm found this error logged multiple times in the newly added server.
Event Log 3351: SQL database login failed. Additional error information from SQL Server is included below. Login failed for user ‘NT AUTHORITY\ANONYMOUS LOGON’.

Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'

Root cause and fix:

This is because SharePoint Timer Services was running with a “Local System” account. Changed it to Domain Account with the necessary rights and fixed this issue.

Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.

In an another case, “Windows SharePoint Services VSS Writer” service was running with local system account, and I had to change the account to a service account from AD.

Salaudeen Rajack

Salaudeen Rajack - Information Technology Expert with Two decades of hands-on experience, specializing in SharePoint, PowerShell, Microsoft 365, and related products. Passionate about sharing the deep technical knowledge and experience to help others, through the real-world articles!

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