It may happen many a times that you install a program and it doesn't show up under Add/ Remove Program in Windows XP. This problem can occur if the program you installed creates a registry key name that is longer than 60 characters in length. Add/Remove Programs only lists program names it locates up to the point it encounters this situation. Follow the steps given to solve the problem:
1. Go to C:\Windows\Inf folder. In the right pane, scroll down to sysoc.inf. Open it with notepad. It will look like…
2. The word "HIDE" in an entry hides that application from your Add/Remove Programs dialog box. To add Pinball to the Add/Remove menu, delete the word HIDE from its entry. Leave the commas that surround it.
3. Save the file. Check for the new entries in the Add/Remove Programs dialog box after you restart your computer.
Alternate Method (when the programs are not in sysoc.inf file)
1. Right click the Program's shortcut/ Properties to gain the target path where the application folder is located. Delete the folder.
2. Go to Start/Run/Msconfig/Startup and make sure it is not listed or checked there. If so, uncheck it.
3. Remove the program listing from registry by going here: Start/Run/Regedit
For items that were in the Start menu, Programs, Startup folder:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupfolder. You'll find a subkey for each disabled item.
For items loaded from the Registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg. Again, you'll find a subkey for each disabled item.
Again while in Regedit, navigate to this key:
HKEY_CLASSES_ROOT\Applications. If the program is listed, right click, delete.
4. Go to Windows Explorer/Tools/Folder Options/File Types. If the program file type is listed, either use Change or Delete.
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