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This article explains how to manually remove an application when the uninstaller will not remove it. For example, if an installation program won't install because it says a version is already installed but that version does not show in the Programs and Features or the uninstaller fails, then use these steps.
- Remove the application from the registry.
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These steps require manually editing the registry
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which can corrupt the user's system.
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Therefore, it is a good idea to create a system restore point and possibly a system backup before editing the registry. Then, if something goes wrong during the editing process, you can restore their system.
- Remove the application from the registry as follows:
a. Run regedit.exe
b. Remove the application's key from the following root keys. The root key location depends on whether the application is a For 32-bit application applications on a 64-bit OS or not (see below).
Keys for 32-bit on a 64-bit OS:
There are two root keys from which entries need to be deleted.
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:
i. Go to: KEY_CLASSES_ROOT\Installer\Products
Right click > Find
enter the name of the Foray product (e.g. Foray Health Check)
Find Next
Verify the key found is under the correct path by looking at the status bar. If not the correct path, then the key was not found.
Right click on the application's guid > Delete
Search again under this key to verify all instances are gone.
ii. Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\
Root key: HKEY_CLASSES_ROOT\Installer\Products\
Figure out the right application keys to delete from under the root keys by searching for the name of the application
Right click > Find
enter the name of the Foray product (e.g. Foray
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There may be more than one application key so search until no more entries for the application are found under each root key.
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Health Check)
Find Next
Verify the key found is under the correct path by looking at the status bar. If not the correct path, then the key was not found.
Right click on the application's guid > Delete
Search again under this key to verify all instances are gone.
c. For 32-bit applications on a 32-bit OS and AND 64-bit applications on a 64-bit OS:
Root keyGo to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Figure out the right application key(s) to delete from under the root key by searching for
Right click > Find
enter the name of the application Foray product (e.g. Foray Chromatic FFT Filter) under the root key.
There may be more than one application key so search until no more entries for the application are found under the root key.
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Health Check)
Find Next
Verify the key found is under the correct path by looking at the status bar. If not the correct path, then the key was not found.
Right click on the application's guid
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> Delete
Search again under this key to verify all instances are gone.
2. Delete the files from the installation directory.
3. Refresh Programs and Features and verify the product no longer shows
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