More than 3 solutions for error 1721 there is a problem with this Windows installer package. A program required for this install to complete could not be run.

1. Title: [3+ Ways] How to Fix Error 1721 Installer Problem Windows 10/11?
Keywords: error1721, error1721 windows10, error1721 windowsinstaller,error1721 there isa
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Description: More than 3 solutions for error 1721 there isa problemwiththisWindowsinstaller
package.A programrequiredforthisinstall tocomplete couldnotbe run.
URL: https://www.minitool.com/news/error-1721.html
Summary: This article described by MiniTool Software mainly discusses the Windows Installer error
1721 as well as its solutions. Generally, you can try to restart/update the service, run the target
program in compatible mode, troubleshoot installation and uninstallation, etc. to fix the issue.
Error 1721. There is a problemwith this Windowsinstallerpackage.A programrequired forthis
install to completecould notbe run.Contactyoursupportpersonnelorpackagevendor.
Have you everencounteredsuch a Windowsinstallationissue?How didyoufix it?If youare still
sufferingfromthisbug,justrefertothe followingmethodstodeal withit!
The following methodsapply to Windows11/10/8.1/8/7.
Solution 1. Restart Windows Installer Service
Since thisproblem isrelatedtothe Windows installer,youcantry to solve itbyrestartingitsservice.
1. OpenWindowsRuncommand.
2. Inputservices.mscandclick OK to openthe Servicestool.
3. Scroll downto findthe WindowsInstallerservice. Right-clickonitand click Stop.
4. Then,right-clickonWindowsInstalleragainandselect Start.

2. Alt=stopWindowsInstallerservice
Besides,make sure both Remote Procedure Call andDCOMServerProcessLauncher servicesshould
be startedand setto automatic.Justdouble-clicktolaunchWindowsInstaller properties.Goto its
Dependenciestabtosee whetherRemoteProcedure CallandDCOMServerProcessLauncher is
listedthere ornot.

3. Alt=WindowsInstallerdependencies
Sometimes,upgradingyourWindowsInstallertothe latestversionisthe fix.
Solution 2. Install App in Compatibility Mode
The error 1721 may be causeddue to the incompatibility of the targetapplicationandcurrent
Windows11 or 10. If so,just try the below stepstohandle the problem.
1. Right-clickonthe setupfile of the software andchoose Properties.
2. Navigate tothe Compatibilitytab.
3. Check Run this program in compatibilitymode and selectWindows8inthe dropdown
menu.
4. Click Apply> OK to save the changes.

4. Alt=runthisprogram incompatibilitymode
Solution 3. Run Program Install and Uninstall Troubleshooter (for Windows 10)
If you come across error 1721 Windows10 while tryingtoinstall Windowsprograms,youcanrelyon
Program Install andUninstall troubleshootertofix it.The troubleshooterassistsyou torepairissues
automaticallywhenyouare blockedfromappinstallationoruninstallation.Italsofixescorrupted
registrykeys.
1. DownloadProgramInstall andUninstall troubleshooter.
2. Double-clickthe downloaded MicrosoftProgram_Install_and_Uninstall.meta.diagcab file to
openthe Program Install andUninstall troubleshooter.

5. Alt=Program Install andUninstall troubleshooter
3. Clickon the Advancedoptionto Applyrepairs automatically and click Next.
4. SelectInstallingorUninstalling.

6. Alt=havingaproblem installingoruninstallingaprogram
5. Selectthe programyouare tryingto install butfail.If youdo notsee yourprogram, select
NotListed.

7. Alt=selectthe programyouare tryingto install
6. Then,make yourdecision,eitheruninstall the programmaticprogramor try otherfixes.

8. Alt=eitheruninstallthe programmaticprogramortry otherfixes
If a programis not listedinthe uninstall options,youwillbe askedforthatprogram’sproduct code.
To access the code,you’ll needatool forreading MSI files foritsproperties.The ProgramInstall and
Uninstall troubleshootercanhelpyoufix the followingissues:
 Corruptedregistrykeyson the 64-bitoperatingsystem.
 Corruptedregistrykeysthatcontrol the update data.
 Unable to install newprograms.
 Unable to completelyuninstall orupdate existingprograms.
 Unable to uninstall programsviaControl Panel.
If you encountererror1721 WindowsinstallerwheninstallingappsfromMicrosoftStore,youcan
try thisway tosolve the problem.
1. Signin to your Microsoftaccount.
2. Update Windowstothe latestversion.
3. Make sure the target app appliestoWindows10/11.
4. Update your MicrosoftStore.
5. If you are tryingto install agame,just troubleshootthe game installation.
6. Repairor resetyourapp.
7. TroubleshootWindowsStore appsinSettings.

9. Alt=TroubleshootWindowsStore appsinSettings
Other Windows Installer Error 1721 Fixes
Besides,there are some otherwaysthatmaysolve the error.
 In computersafe mode,run msiexec/unregisterin Run commandto unregisterWindows
Installerandrun msiexec /regserver to re-registerWindowsInstaller.Then,restart the PC.
 Temporarilydisable anyfirewall orantivirusduringthe installationof the targetprogram.
Or, configure the firewall andsecuritysoftware toallow the installation.
 Checkif any malware orvirus(includingentryoradd-on) installedonyourcomputerprevent
the installation.
 Remove anydamagedfileswithWindowsInstallercleanuputility.
 Use a registrycleanuptool todelete corruptedregistryfiles.
 Type net localgroup to see whetherthere is the “PowerUsers”iteminthe list.If not,type
net localgroup"PowerUsers" /add to add PowerUsers.
 Run SFCscan.
 Performa systemrestore.
https://www.minitool.com/news/error-1722.html

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