Hello, I want to remove an Assembly from the GAC, but gacutil.exe tells me it's impossible. I got the error message: [[[ Assembly: WebAppTest, Version=1.0.1300.17306, Culture=neutral, PublicKeyToken=a162ba99c4ce8766, Custom=null Unable to uninstall: assembly is required by one or more applications Pending references: SCHEME: ID: DESCRIPTION : ]]] I tried gacutil /u WebAppTest gacutil /ul WebAppTest gacutil /uf WebAppTest I just developed a small Assembly test and put it in the cache. I do not know why WINDOWS_INSTALLER needs my assembly. I never created the deployement of this assembly by program. I put this assembly into the GAC, manually. Thank you for your help.