Fix Error 1721 in Windows 10, 7, 8 Vista and XP

Error 1721 may happen when you attempt to uninstall an app with the”Add or Remove Programs” or”Uninstall a Program” dialogue box. This error occurs because of internal corruption at the system files. Normally conducting a registry cleanup scan to repair corrupted regions of the working system is the ideal method to fix Windows malfunction 1721 from Windows 7, Windows Vista and XP.

The Error is essentially due to difficulty with the Windows Installer package. The Windows Installer is an instrument utilized to install, install and then fix the many apps on your PC. Let’s discuss a couple of items that helped a lot of people who confront a similar matter.There is another popular error windows modules installer worker error you can solve that in few seconds after reading solution from

Re-register Windows Installer

To eliminate the programs in your personal computer, Windows Installer needs to maintain a healthful state. When its setup is corrupt you will get error 1721 from Windows 7, Vista and XP through the application removal procedure. Just re-registering its part files would address your issue.

Reboot your PC.

Press the F8 key and choose”Safe Mode with Networking” alternative.

Press ENTER.

Click Start | All Programs | Accessories.

Click”Command Prompt” and choose”Run as Administrator”.

Type the following commands one by one while pressing ENTER after each control individually:

msiexec /unregister

msiexec /regserver


Error 1721

Fix Windows Installer

The ideal approach to fix Windows Error 1721 would be to take out the crap registry entries and fix the corrupt data stored in Windows Installer registry avenues.

To start with, you want to put in a great Registry Cleaner program. You then are going to begin a complete registry scan and resolve the issues found inside Windows Installer registry avenues. After scanning the Windows registry via registry repair applications you may just reboot your device.

Run System File Checker

The System File Checker (SFC) helps in resolving malfunction 1721 as it’s by its nature, scans the system files for corruption and replaces them with their first versions. This requires You to Have the Windows Setup DVD ROM for ongoing.

Add Windows installation disk which you have.

  • Click on Start | Run.
  • Form”SFC /ScanNow” and press ENTER.
  • Restore the System
  • By restoring the condition of your system into a previous date, mistake 1721 might not look in Windows 7, Vista and XP. There’s a tool named System Restore that we must utilize within this process.
  • Click Start | All Programs | Accessories | System Tools | System Restore.
  • Click on Next.
  • Pick a restore point where no mistake 1721 was looking.
  • Click on”Restore my Display” and follow the easy directions on your screen.

Disable Real-Time Protection of the Antivirus Protection

The Real-Time Protection identifies some characteristics of your antivirus that always scans the documents processed by active apps. The Real-Time Protection of your antivirus could be contradictory using Windows Installer and thus causing malfunction code 1721 on your Windows 7, either Vista or XP.

The following are the general steps needed to disable the real-time defense of your antivirus. On the other hand, the measures may differ from product shrewd.

  • Right-click on your anti-virus software and choose”Real-Time Protection”.
  • Click on the “Disable” alternative.
  • Disable User Account Control (UAC)

UAC stands for User Account Control. Conflicts between UAC and also Windows Installer contribute to malfunctioning in 1721. Disable the UAC using the Actions shown here:

  • Click on Start, then click Control Panel.
  • In Control Panel, click User Accounts.
  • From the User Accounts window, then click on User Accounts.
  • From the User Accounts actions window, then click Switch User Account Control off or on.
  • When UAC is configured at Admin Approval Mode, then the User Account Control message seems. Click on Continue.

Clear the Utilization User Account Control (UAC) to help safeguard your computer checkbox, then click OK.

In Windows 7 alter the UAC amounts via the settings choice.

Click on Restart Now to use the change straight away, or click on Restart Afterwards and close to the User Accounts jobs window.