# Add/Remove RadControls to the Global Assembly Cache (GAC)

## Adding controls to GAC by using the gacutil tool (Windows XP, Vista, Win7)

To add Telerik controls to the [Global Assembly Cache](http://msdn.microsoft.com/en-us/library/yf1d93sz%28VS.71%29.aspx) (GAC):

1. Run the .NET command prompt (Start >> Programs >> Microsoft VS.NET >> VS.NET Tools >> VS.NET prompt)

2. Start the [gacutil.exe tool](http://msdn.microsoft.com/en-us/library/ex0ss12c%28VS.80%29.aspx) with **-i** parameter (install) and the full path to the control's DLL. For example:

* gacutil.exe -i "C:\Program Files (x86)\Progress\Telerik UI for WinForms "Version"\bin40\TelerikCommon.dll"

* gacutil.exe -i "C:\Program Files (x86)\Progress\Telerik UI for WinForms "Version"\bin40\Telerik.WinControls.dll"

To get information on the the assembly attributes (Version, Culture, PublicKeyToken), run the gacutil **/l** command which will return a list of all the assemblies in the GAC. You can also see the information associated with a particular assembly using the **-l** parameter. For example:

* gacutil -l TelerikCommon\*

The command above will return:

* TelerikCommon, Version=5.0.3.0, Culture=neutral, PublicKeyToken=5bb2a467cbec79, processorArchitecture=MSIL

## Removing assemblies by using the gacutil tool (Windows XP, Vista, Win7)

To remove assemblies via the gacutil tool, please see the [gacutil.exe tool's help.](http://msdn.microsoft.com/en-us/library/ex0ss12c%28VS.80%29.aspx)

## Adding and removing controls to GAC manually (Vista, Win7)

Simply copy the dll files from the installation directory to **C:\WINDOWS\assembly**. This is equivalent to running the gacutil.exe utility.

To remove the assemblies, open **C:\WINDOWS\assembly** and select the assemblies you want removed. Press DELETE on the keyboard.