I have taken the backup of my existing content db and restored it in a new SPFarm. Both farms are in sync. The same versions have been installed. SP1 & APRIL 2017 CU. (I have verified this).

Now, I have attached the restored contentdb to my new SP farm's SQL instance. and I went to Central Admin and gave details for creating a new web appln in this new farm. I gave the name of the restored content db in the textbox provided for content database name, while creating this new web appln.

Web appln got created, but when I navigated to the home page, and other custom pages, it shows many errors.

I went to event viewer, and got this error:

Log Name: Application Source: Microsoft-SharePoint Products-SharePoint Foundation Date: 6/22/2017 3:31:01 AM Event ID: 3760 Task Category: Database Level: Critical Keywords:
User: mydomain\muser1 Computer: srvr0001 Description: SQL Database 'WSS_Content_5414d7a493df4501b721142d5eff8807' on SQL Server instance 'srvr001\MSSQLSERVER_NPD' not found. Additional error information from SQL Server is included below.

Cannot open database "WSS_Content_5414d7a493df4501b721142d5eff8807" requested by the login. The login failed. Login failed for user 'domain1\muser1'. Event Xml: 3760 15 1 3 0 0x4000000000000000 222978 Application srvr001domaincomputer1 WSS_Content_5414d7a493df4501b721142d5eff8807 srvr001\MSSQLSERVER_NPD Cannot open database "WSS_Content_5414d7a493df4501b721142d5eff8807" requested by the login. The login failed.

Login failed for user 'domain1\muser1'.

I have verified that the user is having full privileges on both web appln, and SQL server end.

2 Answers 2


The way that I'd approach this is:

  1. Back up the content database and restore it to the new SQL Server.
  2. Change the DB owner to match the farm/database access account for the new farm, within SQL Management Studio, use the following commands to achieve this:

    USE DBName

    EXEC sp_changedbowner 'Domain\FarmAccount'

  3. Create a new web application, use a temporary database name (we're going to delete this DB shortly). Ensure that the web application authentication type (classic/claims) is the same as that of the source farm - this is important!

  4. Attach the content database migrated from the old farm to the new farm using PowerShell. See Mount-SPContentDatabase for details.

  5. Delete the temporary content database created with the web application. This can be done from within Central Administration.

  6. If your new farm is in a different domain, you'll need to change the user information in SharePoint to the new domain. Use the Move-SPUser cmdlet to achieve this. See Move-SPUser for details.

  7. Test access to your new content web application.

Let us know how you get on!


Create a new web application, detach the existing content DB and attach the restored Content DB.

  • hi Achiever SP, i have done the same, but the errors , I have listed down , is the same, after performing your suggested steps. The (7) the step is where i am getting full of errors. Upto Step #6 , I also done the same.
    – samolpp2
    Jun 22, 2017 at 11:15
  • The farm account should have DB Owner access on the restored Content DB. Jun 22, 2017 at 11:29

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