How to fix Windows Installer error

  • The Windows Installer error may be caused by a disabled or corrupted service.
  • Restarting and re-registering Windows Installer may resolve the issue.
  • Uninstalling previous versions of the software can prevent installation conflicts.
  • Checking permissions in the Windows Registry may help recover the service.
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error in windows installer

When we try to install or update a program in Windows, we sometimes encounter errors related to the service Windows InstallerThese errors can prevent software from installing properly and generate messages such as "The Windows Installer service cannot be accessed" or "The installation process did not complete successfully."

To resolve this issue, there are several methods that can help reset the Windows Installer service and allow the software to install correctly. Below, We explain in detail each possible cause of the error and the solutions more effective.

Check if the Windows Installer service is enabled

One of the most common reasons for this error is that the service is disabled or stopped. To check and enable it, follow these steps:

  • Press Win + R, writes msconfig and press Enter.
  • In the window that appears, access the tab Services.
  • Search the service Windows Installer. If it is unchecked, check it.
  • Click on Accept and restart the computer.

Once your computer has restarted, try installing the program again and see if the problem is resolved.

Restart and re-register Windows Installer

Sometimes, the Windows Installer service may be malfunctioning and needs to be restarted. To do so, follow these steps:

  1. Press Win + R, writes cmd and press Enter to open the command line.
  2. Type the following commands, pressing Enter after each line:
    • msiexec /unregister
    • msiexec /regserver
  3. Close the window and restart your computer.

If the error persists, continue with other methods.

Remove previous versions of conflicting software

If you try to install a program and already have an older version on your system, this can cause errors with the installer. To avoid this, follow these steps:

  • Accesses Control panel and open Programs and Features.
  • Find the software you're trying to install and uninstall it completely.
  • Restart your computer and try installing the new version of the software.

If you encounter difficulties while uninstalling the program, you can use third-party tools such as Revo Uninstaller o CCleaner.

Repair corrupted Windows Installer files

If the Windows Installer service files are corrupted, you can restore them by following this procedure:

  1. Press Win + R, writes cmd and press Ctrl + Shift + Enter to run it as administrator.
  2. Run the following command to repair corrupted files:
    sfc /scannow
  3. Wait for the scan to complete and restart your computer.

If the problem persists, try reinstalling the Windows Installer files by following these steps:

  • Accede to C: \ Windows \ System32 and locate the files msi.dll, msiexec.exe and msihnd.dll.
  • Change their names by adding .old at the end (for example, msi.dll.old).
  • Download the latest version of Windows Installer from the Microsoft website and install it.
  • Restart the computer.

It is essential to repair all related files as any failure may result in a error in Windows Installer.

Check permissions in the Windows Registry

If the problem persists, you can manually check the Windows Installer permissions in the system registry:

  1. Press Win + R, writes regedit and press Enter.
  2. Navigate to route:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msiserver
  3. Verify that the value Start is set to 3 and value Type en 16.
  4. If you need to modify something, right-click on the value, select Modify and changes the data.
  5. Restart your computer and test the installation again.

Following these steps will help you solve problems with Windows Installer and ensure an error-free installation.

If the problem persists after trying everything, it is recommended to update the operating system or contact Microsoft technical support.

[related url=»https://www.windowsnoticias.com/how-to-fix-error-643-in-windows-update-step-by-step/»]