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Resolving Windows Installer Service Problem



If you receive a Windows Installer service error message, today’s guide is written to help you. If you are installing SP1 using a subscription procedure, or if you are installing over an existing installation of SQL Server 2008, an entry for the SP1 is created in the Add / Remove Programs section. With this entry, you can remove the service pack.







This issue can occur if the Windows Installer files are damaged or missing.

Unable To Access Windows Installer Service: 9 Patches

Given nReasons, here are 9 helpful fixes you can use to fix Windows Installer service error immediately:

  1. # 1. Start the Windows Installer service manually.
  2. # 2. Uninstall the old software / program you want to install.
  3. # 3. Install the latest Windows Installer.
  4. # 4. Reset the Windows Installer service registry.
  5. # 5. Register the Microsoft Installer service.
  6. # 6. Use the regsvr32 command
  7. # 7. Remove the duplicate MISEXEC file.
  8. # 8. Change the parameters of the service call to the delete procedure.
  9. # 9. Run SFC and DISM Commands

Note that 1-3 are quick fixes that you can use to quickly restore the Windows Installer service. If none of the three quick fixes worked, you can try 4-9 fixes one at a time.

Fix 1: Start Windows Installer Service Manually

There are two ports through which you can manually start Windows Installer. One is using the command line and the other is used to start manually.

Read andInstructions for running Windows Installer.

Use the command line

Step 1. Type cmd in the Windows search box and right-click Command Prompt. Select “Run as administrator”.

Step 2. Type netstart MSIServer and press Enter.

Run Windows Installer manually via Service Settings

Step 1. Enter services in the Windows search and select “Services” from the list.

Step 2. Find Windows Installer in the service window and check its status.

Step 3. If it does not start, right-click Windows Installer and select Start.

Fix 2. Uninstall The Old Software / Program You Want To Install

If Windows Installer does not work when you want to install a new version of a software or program, you can uninstall the previous version of the software or program.

We recommend that you first uninstall the old version from your computer. Sometimes installing software without removing the old version can cause unexpected problems.

CorrectionAppendix 3. Install The Latest Windows Installer

If Windows Installer is out of date or incompatible with your current Windows operating system, it may not work correctly and you may receive the “Unable to access the Windows Installer service” error message.

Here’s another convenient way to help: Install the latest Windows Installer. You can try CMD command or manually install it.

Install Windows Installer using CMD command:

Step 1. Press the Windows R keys. Type cmd and hit Enter.

Step 2. At the command line, enter the following lines and press Enter after each line.

Step 3. When prompted, type exit and press Enter.

Step 4. Restart your computer.

Step 5. Update the Windows Installer files to the latest version.

To do this, visit Microsoft websites, download and install Windows Installer. After Windows has finished installing, shut down and restart your computer normally before installing any programs.

Download and install the latest Windows Installer manually

Step1. Download Windows Installer manually from Microsoft.

windows installers service

Step 2. After downloading, double-click the file to start installation.

Step 3. Follow the instructions on the screen to complete the installation process.

Fix 4: Reset Windows Installer Service Registration

Please note that changing the registry may cause some of your applications to crash. Be very careful when resetting Windows Installer through the registry.

Start by backing up the registry

Step 1. Search for regedit and press Enter. Click Yes to open the registry.

Step 2. In the save window go to the “File” section and click “Export”.

Step 3. Select “All” as the export area, name the registry backup and click “Save” to export.

Then close the registry editor.

Create a .reg file and add it to the registry

Step 1. Open an editor or create a new text document.

Step 2. Paste the following text into the editor:

Step 3. Rename Notepad to Restore with the file extension -reg. Others with Again, you must use the ascalculated.reg editor.


Step 4. Right-click on the repar.reg file and select “Run as administrator”.

Step 5. If you are prompted for an administrator account and password, enter the password and click Next.

Step 6. When prompted to install registry keys, click Yes.

Then you can proceed with installing programs and software on your computer.

Fix 5: Register The Microsoft Installer Service Again

If you find that the Windows Installer service is not running, you can re-register it. Re-registering the Microsoft Installer service is another great way to fix an error that the Windows Installer service could not access.

Step 1. Press the “Windows R” keys. Type cmd and hit Enter.

Step 2. At the command prompt, enter the following lines. You must press Enter every time after every line.

If you are using 32-bit Windows, enter the following commands one after the other instead.

Step 3. Close the command line By typing “exit” and restarting your computer.

You have registered the Windows Installer service again. Check if you have fixed the error that the service could not access.

Fix 6. Use Regsvr32

Step 1: Enter cmd in the Windows search, right-click Command Prompt and select Run as Administrator.

Step 2. Type regsvr32 c: windowssystem32msi and press Enter.

Wait for the command to complete and close the command prompt when it completes.

Fix 7: Remove Duplicate MISEXEC File

Step 1. Open Windows Explorer and navigate to C: WindowsSystem32.

Step 2. Locate the msiexec.exe file.

Step 3. If there is another msiexec file without extension or 0K file, delete it or rename it to msiexec.old.

Step 4. Go to Hotfix 1 to manually run Windows Setup.

Fix 8. Change The Parameters Of The Uninstall Procedure Call Service

Step 1. Log in to Windows Search and click Search in List.

Step 2. In the Service window, locate and double-click the Remove Procedure Call (RPC) service.

Step 3. Go to the “Sign in “, select” Sign in as a local system account “and enable” Allow this service to interact with the desktop. ”

Step 4. Save changes and restart your computer.

Fix 9. Run SFC And DISM Command

Step 1. Type cmd in Windows search and right click



Why my windows installer is not working?

If you find that the Windows Installer service is not running, you can re-register the installer service. Reregistering the Microsoft Installer service is another great way to fix an error that the Windows Installer service could not access. Press Windows R keys. Type cmd and press Enter.

How do I run Windows Installer?

To make sure the Windows Installer engine is up to date and working:
  1. Click Start.
  2. Open Windows Command Prompt:
  3. Type MSIexec and press Enter.
  4. If the Windows Installer Engine (MSI) is running, no error message will be displayed and a separate screen with the MSI version number will open.

How do I set Windows Installer service to automatic?

Right-click Computer or My Computer, select Manage, expand Services and Applications, and select Services. Scroll down to the right until you see Windows Installer. Right-click it, then select Properties. The specified trigger type is manual or automatic.