GACView v1.11 - Global Assembly Cache (GAC) Viewer
Copyright (c) 2005 - 2008 Nir Sofer

See Also

  • .NET Reactor - Code protection and software licensing system for software written with .NET Framework.


GACView is an alternative to the standard .NET assembly viewer on Windows Explorer. In addition to the standard columns, GACView displays additional information for each assembly, like modified date, file size, full path of the assembly file, file version, and so on. GACView also allows you to delete an assembly the cannot be uninstalled in the regular way.

Using GACView

GACView doesn't require any installation process or additional DLLs. In order to start using it, just copy the executable file (gacview.exe) to any folder you like, and run it. The main window of GACView displays the list of all assemblies installed in the GAC. You can select one or more assemblies, and then uninstall them, delete them (If regular uninstall fails), or save the assemblies information to file. You can also install new assemblies by using "Install Assembly" option under the File menu, or by simply dragging the assembly that you want to install into the main window of GACView.

Notice About GAC Install Options

The 2 GAC install options (under Options menu) were added according to the assembly GAC API documentation, but it seems that these options don't really affect the way that an assembly is installed in the GAC. When a new version of assembly is installed, the new version is added to the GAC without overwriting the previous versions, even if you select one of these install options. (Bug in GAC APIs ??)

System Requirements

Although this utility is designed to work with .NET environment, the utility by itself wasn't written in .NET, which means that it can work in all versions of Windows, even if .NET Framework is not installed.

Versions History

  • Version 1.11
    • The configuration is now saved to a file, instead of the Registry.
  • Version 1.10
    • Added support for .NET 2.x
    • New column: Processor Architecture. (for .NET 2.x)
  • Version 1.01 - Added support for Windows XP visual styles.
  • Version 1.00 - First release.

Command-Line Options

/stext <Filename> Save the list of GAC assemblies into a regular text file.
/stab <Filename> Save the list of GAC assemblies into a tab-delimited text file.
/stabular <Filename> Save the list of GAC assemblies into a tabular text file.
/shtml <Filename> Save the list of GAC assemblies into HTML file.
/sverhtml <Filename> Save the list of GAC assemblies into vertical HTML file.
/sxml <Filename> Save the list of GAC assemblies into XML file.
/NoLoadSettings Run without loading your last settings. (window position, columns size, etc. )
/DeleteRegKey Delete the Registry key that this utility use to save your last settings.


This utility is released as freeware. You are allowed to freely distribute this utility via floppy disk, CD-ROM, Internet, or in any other way, as long as you don't charge anything for this. If you distribute this utility, you must include all files in the distribution package, without any modification !


The software is provided "AS IS" without any warranty, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The author will not be liable for any special, incidental, consequential or indirect damages due to loss of data or any other reason.

Translating GACView to other languages

In order to translate GACView to other language, follow the instructions below:
  1. Run GACView with /savelangfile parameter:
    GACView.exe /savelangfile
    A file named GACView_lng.ini will be created in the folder of GACView utility.
  2. Open the created language file in Notepad or in any other text editor.
  3. Translate all string entries to the desired language. Optionally, you can also add your name and/or a link to your Web site. (TranslatorName and TranslatorURL values) If you add this information, it'll be used in the 'About' window.
  4. After you finish the translation, Run GACView, and all translated strings will be loaded from the language file.
    If you want to run GACView without the translation, simply rename the language file, or move it to another folder.


If you have any problem, suggestion, comment, or you found a bug in my utility, you can send a message to
Download GACView

GACView is also available in other languages. In order to change the language of GACView, download the appropriate language zip file, extract the 'GACView_lng.ini', and put it in the same folder that you Installed GACView utility.

Language Translated By Version
Polish Szymon Ogrodnik 1.10
Italian Giacomo Margarito 1.10
Japanese X-WORKS 1.01
Galician Xos Antn Vicente Rodrguez 1.01
Valencian vjatv 1.11
Spanish Carlos Alberto Rivera Lara 1.11
Thai Prasit Kaephukhieo 1.11