Success Methods for Windows Installer Service Missing

Resolve the issue of missing Windows Installer service

If you are experiencing the problem of losing the Windows Installer service when trying to enable or disable the Windows Installer service, you are in the right place. This MiniTool article collects several effective ways to solve this problem.

Problem: Windows Installer service is missing

"The Windows Installer service is missing in the service directory of Windows 11. How to restore this service? In the service window, I cannot find the Windows Installer service option. Its missing will cause problems with installing new applications. Please suggest a workaround."

The Windows Installer service is used to add, modify, and delete applications provided in the form of Windows Installer ( .msi, .msp) package. If this service is lost, you may be unable to install a new application or update an existing program and the error message "Unable to access the Windows Installer service".

Many reasons may cause the Windows Installer service to be lost, such as incorrect registry settings, corruption of system files, etc. Whatever the cause of the problem, the most important thing is to find a way to recover the lost service. Now, keep reading to find possible solutions.

Fix the missing Windows Installer service in Windows 11

Method 1: Use Registry Editor to enable Windows Installer Services

If the Windows Installer service is missing in the Services component, you can try enabling it using the Registry Editor. Let's see how to enable the Windows Installer service from the registry.

Step 1: Press Windows R key combination and type regedit in the pop-up window. After that, click the OK button.

Step 2: If the UAC window appears, select the Yes option.

Step 3: In the Registry Editor, navigate to the following location:

Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mismerver

Step 4: In the right panel, double-click the Start value. In a new window, set the numeric data to 2 and click OK . The Windows Installer service will then start when the system starts. If you need to change the startup type to another type, you can refer to the following values:

• Manual: 3
• Disabled: 4
• Automatic (delayed start): 2

Method 2: Reset Windows Installer service settings

Depending on the user experience, resetting the Windows Installer service settings to the default value is also an effective way to solve the problem of "lost Windows Installer service". Now, follow the steps below.

Step 1: Find and download the .reg file of Windows Installer from this page.

Step 2: In File Explorer, double-click the downloaded .reg file.

Step 3: In the UAC window, select Yes option.

Step 4: After the service recovery process is complete, restart the computer and check if you can find the missing Windows Installer service.

Method 3: Scan the damaged system files in the computer

If none of the above methods work, you can consider scanning for damaged or lost system files on your computer. You can do this by running a System File Checker (SFC) scan.

Step 1: Open the elevated command prompt.

Step 2: In the new window, type sfc /scannow and press Enter .

Step 3: Wait for the entire process to complete and then check if the problem has been resolved.

Method 4: Perform system restoration

System restore is a built-in feature in Windows that restores the Windows computer status to a previous point. It helps back up and restore system files, Windows registry, and system settings.

System restore can be performed as long as you create a system restore point before the Windows Installer service disappears.

in conclusion

Is the Windows Installer service missing? You can enable it from the Windows registry or reset the Windows Installer service settings. Additionally, you can try to scan and repair corrupt system files to resolve this issue.

If you need to recover deleted files, consider using MiniTool Power Data Recovery. If you have any questions about this software, please contact us via [Contact Information].

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