Clean Corrupted Silverlight Installation in Windows

Silverlight is a free plug-in, powered by .NET framework and works with most web browsers, devices and operating systems. It is a useful application which creates engaging, interactive user experiences for Web and mobile applications.

If you face difficulties while installing, uninstalling or re-installing Silverlight, or even after installing it, Microsoft Silverlight does not work as expected, then this post is sure to help you. Before you start you may want to find out a few things!

Do I have Silverlight installed?

You can type Silverlight in Start Screen search. If it is installed you will see it as a search results. You can also fire up your browser and check in the add ons or plugins section.

Which version of Silverlight is installed?

The Silverlight runtime does not offer a simple way to find the full Silverlight version number of the installed plugin from JavaScript. It only offers a way to detect if the installed version is “at least” a particular version. But you can visit this website to find out which version of Silverlight, your computer has installed.

Website keeps asking me to install Silverlight

If some website keeps asking you install Silverlight or update to its latest version, even if you have already done so, then open your browsers add ons or plugins manager and check if Silverlight is Enabled. If it is already Enabled, then maybe you do have a corrupted Silverlight installation, and you may need to reinstall Silverlight.

Clean Corrupted Silverlight Installation

If you cannot or are unable to uninstall or install Silverlight due to a corrupted Silverlight installation, this Microsoft Fix It will solve the failed installation problem. This Fix It will basically delete and clean up all the residual registry keys as well as files and folders, which were created by the Silverlight application during its installation, but which were not delete even after uninstalling it via the Control Panel.

Download this Microsoft Fix It to clean corrupted Silverlight installation in Windows 8 or Windows 7. Run the downloaded file and click on next to follow the wizard.

Corrupted Silverlight Installation

If any issues are found it will list them and offer to fix them automatically. If no Silverlight installation is detected on your computer, it will offer to download and install it for you.

Hope this helps!


If this does not help, KB2608523 suggests you do the following to manually uninstall the Silverlight installation:

Copy-paste the following in Notepad and save it as UninstallSilverlight.cmd.

reg delete HKLM\Software\Microsoft\Silverlight /f
reg delete HKEY_CLASSES_ROOT\Installer\Products\D7314F9862C648A4DB8BE2A5B47BE100 /f
reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\D7314F9862C648A4DB8BE2A5B47BE100 /f
reg delete HKEY_CLASSES_ROOT\TypeLib\{283C8576-0726-4DBC-9609-3F855162009A} /f
reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\install.exe /f
reg delete HKEY_CLASSES_ROOT\AgControl.AgControl /f
reg delete HKEY_CLASSES_ROOT\AgControl.AgControl.5.1 /f
reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{89F4137D-6C26-4A84-BDB8-2E5A4BB71E00} /f
rmdir /s /q "%ProgramFiles%\Microsoft Silverlight"
rmdir /s /q "%ProgramFiles(x86)%\Microsoft Silverlight"

Run this .cmd file as administrator. One the process is completed, run it again as administrator. Restart computer and see if it has helped you.

Posted by on , in Category Windows with Tags
Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.