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Windows Installer Error When Applying Transforms (Fixed)

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Windows Installer Error When Applying Transforms (Fixed)

When you try to update or install a certain piece of software on your Windows 11 or Windows 10 PC, you may receive Windows Installer tooltip with an error message about applying transformations. Make sure the specified conversion paths are valid. This post aims to help you with the most applicable solutions to this problem.

What are transformations in Windows?

A transformation is a set of changes applied to an installation. By applying a transformation to a base installation package, the installer can add or replace data in the installation database. The installer can only apply transformations during installation.

Following are the reasons why this error may occur:

  • Corrupted Windows Installer
  • Problems with product key or subkey
  • Broken software update
  • Problems installing and updating Windows
  • Problems with Application Registry Paths

Fix Windows Installer error when applying transforms

If Windows Installer pop-up window with text Error applying transformations while updating or installing a certain program or application on Windows 11/10 PC, you can try our recommended solutions below and see if it helps to solve the problem on your system.

  1. Initial checklist
  2. Enable/Reregister the Windows Installer Service
  3. Run the program installation and removal troubleshooter.
  4. Update/Install Program in Clean Boot State
  5. Edit the Transforms registry value for the software.
  6. Reinstall the software
  7. Perform a system restore or restart your computer

Let’s take a look at the description of the process associated with each of the listed solutions.

1]Initial checklist

It’s possible that the security software installed on your Windows 11/10 device is interfering or preventing you from updating or installing programs. In this case, before moving on to the solutions below, you can temporarily disable your antivirus and see if you can successfully update or install the program, as the case may be.

In addition, some software installers default to downloading required files from the Internet during the installation process, and if the Windows Installer is unable to obtain these files, you may receive an error message when applying transformations. In this case, you can fix the problem by installing the program using the standalone installation package. On the other hand, if the error occurs while running the offline installer, you can download a new copy of the package. You can open task manager and in Processes find and end the task for all running msiexec.exe processes, then try updating/installing the program and see if that helps.

Also due to a corrupted system file, you may encounter this error. In this case, to rule out this possibility, you can run an SFC scan that will find and fix the problematic files on the system.

2]Enable/Re-register Windows Installer Service

Windows Installer Service

The error can occur due to a corrupted Windows Installer or because the Windows Installer service is not running or disabled for some reason. This service handles the installation of system modules from applications, so if it is not running, there is a chance that important components will not be installed.

For this solution, you need to make sure that the Windows Installer service is enabled. To complete this task, follow these steps:

  • Press Windows key + R to bring up the Run dialog box.
  • In Run, type services.msc and press Enter to open services.
  • In the Services window, scroll and find Windows Installer service.
  • Double click on entry to edit its properties.
  • In the properties window, click the dropdown startup type and choose manual.
  • Then make sure the service is running by clicking start if the button is not greyed out.
  • Click apply > OK to save changes.
  • Restart your PC.

However, if the service is already running but the issue persists, you can re-register the Windows Installer service. Here’s how:

Press Windows key + R to bring up the Run dialog box.

In Run, type cmd and click CTRL+SHIFT+ENTER open command Prompt in administrator mode.

In the command prompt window, enter the commands below and click Enter To temporarily unregister the Windows Installer service:

%windir%system32msiexec.exe /unregister

%windir%system32msiexec.exe /regserver

%windir%syswow64msiexec.exe /unregister

%windir%syswow64msiexec.exe /regserver

Restart your computer. When loading, check if the error persists.

3]Run the Program Install/Uninstall Troubleshooter.

Installing or Uninstalling a Program Troubleshooter

As the name suggests, the Add/Remove Programs Troubleshooter helps you automatically fix problems when you are blocked in installing or removing programs on your Windows 11/10 computer. Among other things, the automated utility will fix corrupt data update registry keys for already installed programs on your device. After you run this tool from Microsoft and the problem persists, you can try the following solution.

4]Update/Install Program in Clean Boot State

Clean boot your computer

This solution requires you to perform a clean boot to resolve any conflicts that may occur during software updates or installations. This means starting your Windows 11/10 computer with the minimum required drivers and programs and verifying that you can successfully update or install the software in that system state.

In case of an error that occurs while installing the software, it is possible that for some reason the Windows 11/10 system detects the installer as an old program and thus creates a conflict. In this case, you can run the package installer in compatibility mode on your PC in clean boot mode or in normal mode. To complete this task, follow these steps:

  • Open File Explorer .
  • Find and right click software package executable (installer) file.
  • Choose properties.
  • Switch to Compatibility .
  • Now check Run this program in compatibility mode for.
  • Choose Windows 7 or 8 .
  • Select the Run this program as an administrator check box.
  • Click apply > OK.

Now check if the issue is resolved. If not, you can run the Program Compatibility Troubleshooter and see if that solves the problem.

5]Edit the Transforms registry value for the software.

Edit the Transforms registry value for the installed software.

This error can occur when updating installed software due to an invalid conversion registry path/value for the software. In this case, to fix the problem, you can edit the conversion path in the Windows registry.

Since this is a registry operation, it is recommended that you back up the registry or create a system restore point as a necessary precaution. After that, you can proceed as follows:

 HKEY_CLASSES_ROOTInstallerProducts

  • At this location on the left navigation bar, right click Products ub is the parent folder.
  • Choose find .
  • Now check the keys, values ​​and data.
  • Then, in the “Find what” box, enter the name of the software you’re having trouble with.
  • Press Find Next or hit Enter to find the specified registry key.
  • In the search results in the right pane, double-click Transform registry to edit its properties.
  • In the registry key properties dialog box, delete the values ​​in the Value data field.
  • Click OK.

Note. If an error occurs when uninstalling the program, simply delete the Transforms registry key by right-clicking entry and then selecting Delete .

  • Exit Registry Editor.
  • Restart your PC.

When downloading, see if the issue is resolved. If not, you can move on to the next solution.

6]Reinstall the software

If you are getting an error while updating the software, it is most likely that the current installation database is corrupted on your device. In this case, the most appropriate fix is ​​that you can uninstall the software – preferably use any free third-party uninstaller to completely remove any residual files that may conflict with installing the latest software on your Windows 11/10. PC.

7]Perform a system restore or restart your computer.

This should be the last resort in the unlikely event that none of the suggestions above worked. You can perform a system restore to go back to an earlier point in time when you had no problems updating or installing software on your device. If restoring your system didn’t help either, you can simply restart Windows 11/10 to fix any underlying OS issues that might be causing it.

These two troubleshooting steps are often recommended when all else fails and you have serious issues such as malware infection, the system is broken or keeps crashing, new drivers, OS or application updates are not working properly, and so on. Of these two options, recovery is the best alternative before you can try a reset, which will essentially reset your computer to factory state, giving you a clean slate to start fresh.

These posts may interest you:

How do you check that the transformation paths are correct?

To ensure that the specified conversion paths are valid during software removal on your Windows 11/10 computer, you need to download and run Windows Installer Cleanup Utility on the machine you are facing this problem.

How to fix Windows Installer errors that don’t work?

If the Windows Installer is not working properly and throwing errors, you can try this first:

  • Open services console.
  • Right click Windows Installerand then click properties.
  • If startup type set to “Disabled”, change it to “Manual”.
  • Click OK to close the properties window.
  • Right click Windows Installer serviceand then click start.
  • Try installing or uninstalling the software again.

What is the difference between MSI and MST files?

MST files are used to convert the contents of an MSI package. They are often used by administrators to customize the behavior of an existing MSI file. They use MST files and the original MSI package in their software distribution systems such as group policies. An MST file is used to collect installation options for programs that use the Microsoft Windows Installer into a file. The MSI contains application information divided into features and components, and each component can contain files, registry data, shortcuts, etc.


See above for the most detailed Windows Installer error when applying transforms. [Fixed]. Did this guide answer your question? Let useguide.net find out in the comments below.



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