Windows Installer Error 1721 It is a common Windows error that occurs when Windows cannot install the msi package due to various reasons. You may receive the following error message:
“Error 1721: there is a roadblock with this windows installer package. A script required to complete this installation could not be run. Contact technical support personnel or package vendor.”
Reason:
There are the following main reasons behind this error.
1. System files such as exe files are missing, dll files, sys files, ocx files, etc. These are the important system files that are responsible for running your PC smoothly.
2. Windows Installer Problema: Windows Installer file Msiexec.exe is responsible for adding and deleting programs from your PC.
3. Invalid registry entry: log files are the most important system files and once they get corrupted or get invalid entries, becomes irresponsible and, so, the system causes a lot of problems.
How to fix the error 1721 Windows Installer
Method 1: fix using advanced system repair tool
The most common reason behind program installation failed is corrupt or damaged system files like DLL files, exe files, sys files, etc. There are hundreds of small system files that work for specific tasks. If one of the files is replaced, removes or damages, you might get windows installation error 1721.
Download and install the advanced system repair tool and scan your PC. Has the large database with 25 million files. It will find all the corrupted or deleted system files and reinstall them with the new one. After making the most of it with the advanced system repair tool, try installing the software again.
Method 2: re-register the Windows Installer file.
As I mentioned previously, Msiexec.exe is a Windows Installer file that is responsible for adding and deleting software from the PC. If this file becomes inaccessible, the system cannot install or uninstall any software. To fix this problem, you must re-register this file.
Paso 1: Open the Run dialog box by pressing Tecla de Windows + R simultaneously.
Paso 2: Kind MSIEXEC /UNREGISTER in the Run dialog box and click OK. This command will show nothing more than unregistering the Msiexec.exe proceedings.
Paso 3: Open the Run dialog again and run the following command to register Msiexec.exe file again.
MSIEXEC / REGSERVER
Now, restart the computer and examine the error 1721, whether it reappears or not. Before restarting the PC, you should bookmark this post because if this method doesn't work, here is a detailed guide to correct this error.
Method 3:
Disable antivirus software and firewall and then try to install the software. Apply this method only when you fully trust the application.
Method 4:
To run sfc /scannow command to repair system file. If there was a problem in the Windows files, this command will repair them automatically. Open command prompt as administrator and paste below command and hit Enter.
sfc / scannow
This command will search for complete system files and replace corrupted system files / wrong with correct microsoft files.
Resume:
In this chapter, I have tried to explain 4 alternatives for fix Windows installation error 1721. if you have difficulty clearing the installation error 1721, Why don't you use the advanced system repair tool? This is not a tool, is a weapon against Windows problems. You should try!
