Windows 10 May 2019 Update

Fix windows installer service could not be accessed Error On windows 10

Getting error The Windows Installer Service Could Not Be Accessed or windows installer service not running while try to install a program in Windows 10, 8.1, 7? Due to this error, you are unable to install applications, Looking for solutions to fix This problem. Here we have some working solutions to fix this 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” or may this Error Would be like “Error 1719. Windows Installer Service could not be accessed. Contact your support personnel to verify that it is properly registered and enabled.”

What is Windows Installer?

Windows installer services a basic required service which need windows computer to install or uninstall a new software application. All the software created for Windows utilize this service while they’re mapped. So if this service is not responding or not available at the moment you’re installing new programs, you can’t go ahead. And you face error like  windows installer service could not be accessed.

Reason For windows installer service not running

This windows installer service could not be accessed Error can occur due to different reasons, some most common are. May be the Windows Installer files on the system are either missing or corrupt. You install or remove a program that uses the Microsoft Installer Service before you try to install the program on your computer. Or may The Windows Installer Service is not running , Also this error can occur if the Windows installer is not registered properly.

Windows installer service could not be accessed

After understand what exactly do the windows installer, and why this show error windows installer service could not be accessed Error while install or uninstall applications. Now fallow bellow steps to fix this problem.

Check Windows Installer Service Is Running

Before perform any troubleshooting steps first make sure the windows installer service is running properly. If the windows installer service is not running , Stopped working or not responding then you may face this problem. While install or uninstall any application. To check or start the windows installer service fallow bellow steps.

  • On the desktop, press Windows key + R to open the Run Dialog.
  • Type services.msc in the Run Dialog, and then press Enter to open Services.
  • Right-click the Windows Installer service, and then click Properties.
  • If the Startup type box is set to Disabled, change it to Manual.
  • Click OK to close the Properties window.
  • Right-click the Windows Installer service, and then click Start.

check Windows Installer Service running

Now once Restart windows and try to install or uninstall what ever you want you did’t face any error like windows installer service could not be accessed. If you still getting same problem fallow next step.

Re-register Windows Installer Service

If above method fails to fix windows installer service could not be accessed error then you may need to re-register the Windows Installer service using command prompt. To do this fallow bellow steps

First open command prompt as administrator, you can do this by right click on widows 10 start menu and select command prompt ( admin ) or you can click on start menu search type cmd, from search results right click on command prompt and run as administrator. Now here If you using 64-bit version of Windows then type fallowing commands one by one and press enter key after every command to execute the same.

%windir%\system32\msiexec.exe /unregister
%windir%\system32\msiexec.exe /regserver
%windir%\syswow64\msiexec.exe /unregister
%windir%\syswow64\msiexec.exe /regserver

Or if you have 32 bit widows version then type only bellow commands and perss enter key to execute the same.

msiexec /unregister
msiexec /regserver

Re-register Windows Installer Service

That’s all, Now type exit to close the command prompt and restart windows computer to take effect the changes you have made. After that install or uninstall the application and check problem fixed.

Run The SFC Utility

Most of times Due to corrupt system files windows show different Error and may this windows installer service could not be accessed is one of them.  So make sure there is not corrupt system files on your windows computer by running the SFC utility. Which scans all protected system files and replaces incorrect versions with correct Microsoft versions. To run this tool open command prompt as administrator and type sfc /scannow and hit enter key.

Wait until complete the scanning process complete 100 %.  After that Restart windows and install or uninstll any application to check windows installer service could not be accessed problem solved or not.

Also Read :  Fix Windows Resource protection could not start the repair service  

Tweak on Windows Registry

If all of above methods fails to fix windows installer service could not be accessed error. Then you can perform some Advanced tweaks on windows registry to fix this problem. Lets see how to do.

Note : Windows registry editor is the essential part of windows. Any mistake on windows registry can cause windows not work properly. We recommend to create system restore point before make any changes on windows registry. So that if anything goes wrong while make changes on windows registry we can revert to previous working state by performing system roster.

First press Windows + R on Run Box type regedit and hit enter key. This will open windows registry editor.

Here from left pane navigate to fallowing key.


registry tweak to fix windows installer service could not be accessed

Here on the right pane look for the DWORD key named WOW64. Check the data value for WOW64 registry if its set ot 1 then right click on it and select modify. Now change the value data to 0. Click ok  to make save the changes.

Note : If you can’t find the WOW64 DWORD then simply right click on blank space select New -> DWORD 64 -> Name it to WOW64. And set value data to 0.  After make the changes simply restart windows and check problem solved or not.

These are some best working solutions to fix “windows installer service could not be accessed” error on windows 10, 8.1 and windows 7 computers. Let us know which option worked for you. And also If you have any query about this error and solutions feel free to discuss on comments. You can directly share your windows problems through our contact us from.

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