Error 1935 when you try to install Microsoft Office 2010 or 2007

Resolution

If you see "Error 1935. An error occurred during the installation of assembly component" when you install Office 2010 or 2007 or one of the Office stand-alone products like Excel, restart the computer and try to run setup again as a quick first step.

If the error still appears after restarting the computer, try these other methods to fix the problem:

Run the System Update Readiness tool

Important

The System Update Readiness tool can only be used on Windows 7 or Windows Vista operating systems. If you have Windows XP, try one of the other methods in this article.

Select and download the System Update Readiness tool for your version of Windows:

Repair or update Microsoft .NET Framework components

First, check installed programs to see if the latest version of .NET Framework is installed. To do this, follow these steps:

  1. Click Start (or Start > Run in Windows XP).

  2. Type appwiz.cpl, and then press Enter.

  3. Look for Microsoft .NET Framework 4 Client Profile in the list of installed programs. See image.

    Look for Microsoft .NET Framework 4 Client Profile in the list of installed programs

If you find Microsoft .NET Framework 4 Client Profile, follow these steps to repair it:

  1. Close all applications.

  2. Click Start (or Start > Run in Windows XP).

  3. Type appwiz.cpl, and then press Enter.

  4. Click Microsoft .NET Framework 4 Client Profile and click Uninstall/Change (or Change/Remove in Windows XP). See image.

    Click Microsoft .NET Framework 4 Client Profile and click Uninstall/Change (or Change/Remove in Windows XP).

  5. Choose the option to Repair .NET Framework 4 Client Profile to its original state, and then click Next. See image.

    Choose the option to Repair .NET Framework 4 Client Profile to its original state, and then click Next.

  6. When the repair is complete, click Finish, and then click Restart Nowto restart the computer.

If you can't find Microsoft .NET Framework 4 Client Profile, download and install it to update the computer. You can download the file from:

Microsoft .NET Framework 4 (Web Installer)

Try to install Microsoft Office again. If error 1935 continues to occur, follow the steps to uninstall and reinstall .NET Framework from the computer.

Uninstall and reinstall Microsoft .NET Framework components

Uninstall and reinstall Microsoft .NET Framework components IMPORTANT The .NET Framework Setup Cleanup Utility provided here should only be used only after you've tried the previous options.

To uninstall .NET Framework components from the computer follow these steps:

  1. Create a temporary folder on your desktop.

  2. Visit the .NET Framework Cleanup Tool User's Guide blog and download the dotnetfx_cleanup_tool.zip file.

  3. When prompted, click Open, and then click Extract Now. Extract the files to the folder you created.

  4. Find cleanup_tool.exe in the folder you created and double-click it.

  5. In the "Do you want to run the .NET Framework Setup Cleanup Utility?" message, click Yes.

  6. Click Yes to accept the license agreement.

  7. In the Product to cleanup window, choose a .NET Framework version that you want to remove.

    Note

    You can't remove .NET Framework versions that are part of the Windows operating system. If you have Windows 7, you can't remove .NET Framework versions 3.5 or lower. If you have Windows Vista, you can't remove .NET Framework versions 3.0 or lower. If you have Windows XP, you can't remove .NET Framework versions 2.0 or lower.

  8. Click Cleanup Now.

  9. Restart the computer once the .NET Framework component is removed.

  10. Download and install the following components, one at a time, based on your operating system:

  11. Restart the computer, and run Windows Update to install updates.

Need More Help?

Get help from the Microsoft Community online community, search for more information on Microsoft Support or Office Help and How To, or learn more about Assisted Support options.

More Information

If error 1935 happens when you install Office 2010 Service Pack 1 (SP1), follow the steps in the Description of Office 2010 update: September 13, 2011 knowledge base article.

For related information about the 1935 error, read Error 1935 during install of the .NET Framework.

You may experience error 1935 when you install Office 2010 Service Pack 2 (SP2). As Office 2010 includes .NET Programmability Support, this issue may be caused by the interference between Windows Installer (msiexec.exe) and Windows Search (SearchIndexer.exe) or another module in the assembly file copy process. This issue may also occur when you apply other updates, for example, a hotfix for Microsoft .NET Framework components. To work around this issue, use one of the following steps:

  • Method 1: Retry installation of Office 2010 SP2

  • Method 2: Stop Windows Search Service, and apply Office 2010 SP2

    To stop Windows Search Service, follow these steps:

    1. Click Start, type services.msc in the Search programs and filestext box, and then click services.msc in the search results.

    2. In the list of services, right-click Windows Search, and then click Stop.

  • Method 3: Perform a clean startup, and apply Office 2010 SP2

  • Method 4: Install all available updates by using Microsoft Update and apply Office 2010 SP2