When you try to install a program which uses Windows Installer in a Windows 7/Vista computer, you may receive the following error.

The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed. Contact your support personnel for assistance.

This error may occur even though Windows is already in normal mode.

Resolution

Start the Windows Installer service

  1. Click Start, type Services.msc and press {ENTER}
  2. Double-click Windows Installer
  3. Set the Startup type of Windows Installer to Manual
  4. Click Start to start the service. Note down the error message if any.
  5. Click OK.

Windows Installer Registry Fix

If the above steps do not help or if the Windows Installer service is not listed in the Services applet, follow these steps:

  1. Download msiserver.zip (for Windows Vista) | w7-msiserver.zip (for Windows 7).
  2. Unzip the file and extract msiserver.reg to the Desktop.
  3. Right-click msiserver.reg and choose Merge.
  4. Click Yes when asked for confirmation.
  5. Restart Windows.

Email SubscriptionPrefer an E-mail subscription?

Enter your email address:

Delivered by FeedBurner

45 Comments

  1. beatucia
    said this on Wednesday, May 14th 2014 1:16 am

    grazie mille oh scaricato w7-msiserver.zip (per Windows 7). funziona!!!!! grande ancora grazie

  2. Osvaldas
    said this on Saturday, November 9th 2013 7:58 pm

    I Tried both solutions and it still does not work pleas help! :(

  3. ian chazev
    said this on Sunday, September 22nd 2013 6:16 am

    RT quote:I cannot tell you how MANY websites, solutions, options I have tried, and then I stumbled upon this. You are a god among mere mortals, thank you thank you thank you!! I worked perfectly!
    helpfull
    many tq

  4. Joshua
    said this on Friday, September 20th 2013 8:53 pm

    Try opening the file by selecting “Run as administrator”. This may help the isssue witht he merging.

  5. Matt
    said this on Saturday, June 1st 2013 11:49 pm

    I cannot tell you how MANY websites, solutions, options I have tried, and then I stumbled upon this. You are a god among mere mortals, thank you thank you thank you!! I worked perfectly!

Leave a Reply