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Updated on:
Wednesday, September 5, 2001 

Extension Manager

Download Program

To protect against viruses, trojan horses, and worms masquerading as a harmless file type, you need to be able to see your filename extensions (.exe, .gif, and so on). Trojan/worms such as SirCam has been transmitted to people this way.

Extension Manager allows you hide and unhide file extensions, including those extensions that are usually only viewable by tweaking the Registry.

Extension Manager lists seven (7) of the most commonly viewed used file extension, including extensions like .PIF, .SHS and .LNK.

Even though you might have unmarked Hide file extensions for known file types in the Folder Options of Windows Explorer, there are still a handful of file extensions that don't show up.

Purpose of Extension Manager
The purpose of Extension Manager is to make it easier for you to make file extensions that Microsoft forces to be Never Shown to be visible without wading through the System Registry yourself. If you're familiar with the Registry and you know where to make the appropriate changes, you don't need my program. However, if you make changes to the wrong Registry settings, you could inadvertantly mess up you system in ways that even super PC technicians might not be able to figure out.

When you launch Extension Manager, it scans your Windows System Registry (Registry) for 7 specific file types (LNK, URL, SHS, SHB, PIF, SCF, and SCT). These file types were set to have their file extensions to never be shown in Windows Explorer even if you set Windows Explorer to show all known file types.

By default, Windows sets these 7 file types to never be displayed. This is done by setting the property key NeverShowExt to the file type. To make Windows Explorer show any one of these file types, you need to assign the property key AlwaysShowExt to the file type and remove the NeverShowExt property key. If by some chance both property keys NeverShowExt and AlwaysShowExt are still assigned to the file type, the NeverShowExt property key takes precedence.

System Requirements
This program is designed to run on any version of Windows 9x/Me and Windows NT/2000/XP.

If you're using Win9x or WinNT, you might get the following installation error message:

    This installation package cannot be installed by the Windows Installer Service. You must install a Windows service pack that contains a newer version of the Windows Installer service.
If you receive this message, its because you don't have the Windows Installer Service installed on your system, which is now included in WinMe, Win2000, and WinXP. To install the Windows Installer Service on your system, use the following programs:
Windows Installer (Win9x)Windows Installer (WinNT)

This program is freeware/donationware. You are free to use this program on as many computers as you want without the worry that the software police will come knocking on your door for a registration fee. So I can offer you Extension Manager for FREE, if you feel the utility is useful then pay me what YOU think it's worth!

Click on the graphic to make a donation.