WSUS migrate the database on sqlexpress

In this tutorial, I will explain how to migrate your WSUS database, which is default on Windows Internal Database to SQLExpress.

Since Windows Server 2016, the installation of WSUS can be done directly on a SQL Server (Express) database.

Why migrate to SQLExpress?

There are several answers to this question:

  • For performance and stability reasons, switching to SQLExpress can resolve stability issues on WSUS and improve performance on the management console (faster display of information).
  • You already have an SQL instance on your server and you want to use it to avoid multiplying the services.
  • You want to put the database on another server.


  • A server with WSUS installed.
  • Have an SQLExpress instance.
  • Have the SQL Server Management Studio console (SSMS) on the WSUS server.

Migration of the WSUS database to SQLExpress

Open the PowerShell console as administrator and enter the following commands to stop the IIS and WSUS services.

Stop-Service IISADMIN
Stop-Service WsusService

Launch SSMS in administrator mode.

In server name 1 enter: \\.pipe\Microsoft##WID\tsql\query , authentication 2 Windows authentication and click on Connect. 3.

Connexion à WID

You must now detach the base, for this right click on the base 1 -> Tasks 2 -> Detach 3.

Detachement base SUDB

Check Delete 1 to cut the active connections and click on OK 2 to detach the database. Once the base is detached, you can close SSMS.

Supprimer les connexions actives et detache la base

Move the files from the database to the desired location. By default, the database is in the following location: C: / Windows / WID / Data. The default folder for SQL Server is C: / Program Files / Microsoft SQL Server / MSSQLXX.MSSQLSERVER / MSSQL / Data.

Deplacement fichier base WSUS

Relaunch SSMS to connect this time to the instance that will receive the WSUS database.

Server name 1: The new instance
Authentication 2: Windows authentication
Click on Conne. 3

Connexion à l'instance SQL EXPRESS

Right click on Database 1 -> Attach 2.

Attacher un base à SQL Server

Click on Add 1.

Attacher une base

Select the file SUSDB.mdf 1 and click on OK 2.

Selection base de données

Check the database 1 and also the recovery of the log file 2 and click on OK 3.

Attache base de données

You must now create a connection for the service running WSUS. From the menu on the left Security 1 -> Connection (right click) 2 -> New connection 3.

Ajout connexion

Configuration of the new connection:

Default database: SUSDB 2. Click on Role of the server 3.

Nouvelle connexion

Check sysadmin 1 to give the administration rights on the database. Then click on User Mapping 2.

Nouvelle connexion ajout droit

Tick the SUSDB database 1, add the webService role 2 and click on OK 3 to validate the connection.

Nouvelle connexion - Mappage utilisateur

Check the connections for the presence of the user AUTHORITY NTSERVICE NETWORK 1.

Vérification de la connexion

We must now modify the parameters of WSUS to make it point to the new base. To do this open the registry editor: Windows key + R, type regedit 1 and click on OK 2.

Executer regedit

Look for the key: HKEY_LOCAL_MACHINE / SOFTWARE / Microsoft / Update Services / Server / Setup / Installed Role Services / UpdateServices-WidDatabase 1.


Rename the key to UpdateServices-Database 1.


Find the key HKEY_LOCAL_MACHINE / SOFTWARE / Microsoft / UpdateServices / Server / SetupSqlServerName 1.

changer nom instance wsus

Change the value not the name of your SERVERINSTANCE instance 1.

changer nom instance wsus

Restart the services.

Start-Service IISADMIN
Start-Service WsusService

It’s over, the WSUS database is migrated. It is not recommended to uninstall the WID functionality, as this functionality contains WSUS post-installation scripts. You can deactivate the service without problem.