Press Windows key + R to open the run command.
Type services. msc and press enter.
Right click on “windows installer” and stop the service.
Right click again and start the service and try to install the program.
1. Restart your computer and press the F8 key repeatedly as soon as you see the BIOS information on your screen. Pressing the F8 key allows you to access the “Safe Mode” of your computer.
2. Log on as “local administrator.” Click “Start” and select “Run.”
3. Un-register Windows Installer service by typing “msiexec/unregister” at the command prompt and hit “Enter.”
Press Windows key + R to open the run command.
Type services. msc and press enter.
Right click on “windows installer” and stop the service.
Right click again and start the service and try to install the program.
1. Right-click on the setup file of the program and select “Properties”.
2. Select “Compatibility” Tab.
3. Place a check mark next to “Run this program in Compatibility mode” and select Windows 8 from the drop down list.
4. Let the program install and then check the functionality
Scan the registry. You can fix Windows Registry Installer entries with a laptop or computer cleaner or with system optimization software.
Start the full Windows Installer service. Make sure the Windows Installer service is running by pressing the Win+R hotkey and typing “services.msc” in the “Run” text box.
Re-register the Windows Installer service.
[MiniTool News]Custom solution. Restart the Windows Installer service.
decision related to. Install the application in compatibility mode.
answer 3
Other fixes for Windows Installer errors 1721.
Recommended computer for Windows 11 Assistant.
Error 1721 is present in Windows 1:10
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Error 1721 or 1722 when installing a package
Full solution: Disable Internet Explorer add-ons.
Unregister and re-register the installer. This step actually removes all specific information from the current installer on some systems and then re-registers it.
Error 1721 on Windows 10.
Error message or 1721 1722 when installing a software tool
Solution Disable Step 1: Internet Explorer add-ons.
Unregister and re-register the installer. This step is to basically remove any identities that the installer undoubtedly exists on the system and then register them again.
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