Fix Windows® Installer error 1721 in Windows® XP®
Learn about the causes which lead to Windows Installer error 1721 in Windows XP system. Also, get tips to fix the error.
The error 1721 in Windows installer is a common problem that comes up when you try to remove programs from ‘add or remove programs’ in Windows XP computer. If that error occurs in your computer, you cannot install or remove any program. The exact error message is "There is a problem with this Windows Installer package. A program required for this install to complete could not be run. Contact your support personal or package vendor". The main cause for this error is, the system cannot read the files or programs to complete the installation of the program. Before trying to install any program, make sure that the installation file is complete and can operate well. You can fix this error by unregistering the installer and then re-registering it back on to your computer. Then it can read all the files and settings. After that you may use Windows Installer Cleanup Utility. It will repair all the problems with the Windows installer.
The points below will help you to fix Windows Installer error 1721 in Windows XP:
- Windows Java Installer Package error
- Restarting the computer in safe mode
- Registry cleaner
Windows Java Installer Package error
To resolve this error disable all the antispyware or antivirus softwares installed in your computer and then try to install the Windows Java Installer. Then check if any of the application in your computer is blocking the completion of the installation process. Check the ‘Add or remove programs' or Internet Explorer to find unwanted programs or add ons. Select the‘tools’ option in the Internet Explorer webpage. From that select ‘Internet Options’ and select ‘Programs’ tag. Then click on the ‘manage add-ons’ button. If and any add-on is listed there, remove or disable the entry. After that turn off the 'User Account Control' too. This will fix the error.
Restarting the computer in safe mode
We need to restart the computer in safe mode to fix the error 1721 Windows Installer error. For that restart the computer and tap the ‘F8’ function key continuously. Once it is restarted select the ‘safe mode’ option and press the ‘enter’ key. Click on the ‘start’ button and click ‘Run’. After that you have to type ‘cmd.exe’ in the command box and click ‘Ok button. Then type ‘msiexec /unregister’ in the command prompt and hit the ‘enter’ key. After that type ‘msiexec /regserver’ and press the ‘enter’ key and then type ‘exit’ to exit from the command prompt. This will resolve the error and you can remove the programs from ‘add or remove programs’.
You can use the registry cleaner to resolve the 1721 error. It will repair all the damaged files. It also scans your system to remove all types of viruses and malwares that are infected. You can easily download the registry cleaner from the Internet. It will clean the entire registry by removing all the unwanted entries in the registry. After running the registry cleaner, restart the computer and you can install or remove any programs from your computer and the error will be fixed.
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