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Performing a "Do Over" with TFS 2010 Upgrade

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Regardless of whether you call it a "mulligan", a "do over", or whatever, the fact is you may encounter errors during your upgrade to Team Foundation Server (TFS) 2010 -- hopefully in your Development or Test environment first, not when upgrading your Production environment -- and consequently you want to start over and perform the upgrade again.

While the TFS installation guide (and even the TFS uprade tool itself) makes it very clear to backup your data before upgrading, it doesn't provide any instructions for how to recover from a failed upgrade.

If you need to perform the upgrade again (and you don't have the luxury of applying a snapshot to "rollback" your Development or Test environment), then you can use the steps described below.

First, use the Team Foundation Server Configuration Tool to unconfigure components on the server:

 cd "%ProgramFiles\Microsoft Team Foundation Server 2010\Tools"
TfsConfig.exe setup /uninstall:All

Next, remove the SharePoint content database (e.g. WSS_Content_TFS) containing the upgraded TFS project sites:

  1. On the SharePoint Central Administration home page, in the Application Management section, click Manage content databases.
  2. On the Manage Content Databases page, in the list of content databases, click the name of the content database to remove (e.g. WSS_Content_TFS).
  3. On the Manage Content Database Settings page, click the Remove content database checkbox. When prompted to confirm removing the content database, click OK.

Delete the databases that will be restored from backup (e.g. ReportServerDB, ReportServerTempDB, TfsWarehouse, and WSS_Content_TFS) as well as the new TFS 2010 databases:

  • Tfs_Configuration
  • Tfs_DefaultCollection
  • Tfs_Warehouse
  • Tfs_Analysis (Analysis Services)

Next, restore the following databases:

  • ReportServerDB
  • ReportServerTempDB
  • TfsActivityLogging
  • TfsBuild
  • TfsIntegration
  • TfsVersionControl
  • TfsWarehouse (Database Engine)
  • TfsWarehouse (Analysis Services)
  • TfsWorkItemTracking
  • TfsWorkItemTrackingAttachments
  • WSS_Content_TFS

Then attach the SharePoint content database (e.g. WSS_Content_TFS) containing the TFS project sites to the SharePoint Web application.

To attach the content database in SharePoint Server 2010 by using Windows Powershell:

  1. On the Start menu, click All Programs, click Microsoft SharePoint 2010 Products, right-click SharePoint 2010 Management Shell, and then click Run as administrator. If prompted by User Account Control to allow the program to make changes to this computer, click Yes.

  2. At the Windows PowerShell command prompt, type the following command:
    Mount-SPContentDatabase -Name <DatabaseName> -DatabaseServer <ServerName> -WebApplication <URL> [-Updateuserexperience]

    Where:

    • <DatabaseName> is the name of the database you want to upgrade.
    • <ServerName> is server on which the database is stored.
    • <URL> is the URL for the Web application that will host the sites.
    • -Updateuserexperience specifies to update the sites with the new SharePoint user experience (part of Visual Upgrade). If you omit this parameter, the sites retain the old user experience after upgrade.

    For example:
    Mount-SPContentDatabase -Name WSS_Content_TFS -DatabaseServer CYCLOPS-DEV -WebApplication https://cyclops-dev -Updateuserexperience

Next, run the Team Foundation Server Administration Console (TfsMgmt.exe) and click Configure Installed Features.

This will launch the Team Foundation Server Configuration Center and allow you to complete the upgrade process again.