Uninstalling ActivePerl on Windows (v5.8.8) MSI Package If you installed ActivePerl using the MSI installer, uninstall using the Windows Add / Remove Programs applet. AS Package If you installed ActivePerl using the AS installer, uninstall by deleting the directory in which ActivePerl was installed. Manual Uninstall If you must uninstall ActivePerl manually, delete the Perl directory, including all sub-directories, and the following registry entries: 1. HKEY_LOCAL_MACHINE/Software/ActiveState/ActivePerl 2. HKEY_LOCAL_MACHINE/Software/ActiveState/PerlScript 3. HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Uninstall/ActivePerl