For all those unfortunate PC users who are searching and Googling for how to repair Windows Installer Service, I have some helpful info for you. A couple days ago I tried to install a required program on the PC but stalled on an error “Windows Installer Service cannot be accessed”. After many trials trying to fix this issue, I stumbled upon some new fixes for this issue that has worked in all these situations where the Windows Installer Service does not work properly. I think no matter you are suffering from a Windows Installer error 1628 or Windows Installer error code 1601, you can also try these steps.
The most common reason for why you should perform a Windows Installer repair job is that the engine does not work properly on the computer. This is used caused when there is something wrong with the version on your PC. No matter whenever you get a Windows Installer error message, check and make sure that the one installed on your PC is the latest one. You can do this by downloading the latest version from Microsoft official webpage.
If you have already installed the latest version but keep on getting a Windows Installer error message, simply re-register it on your PC. To do this, follow these steps:
*Click “Start” and then click “Run”
*Type “%windir%\system32″ without quotation marks in the box and click “OK” to come. Here, locate and note down the all information of the Msiexec.exe file, including its path and the file name, for example “C:\Windows\system32\Msiexec.exe”
*Close all windows and go to “Start”, “Run” again; type “Regedit” in the box and press “Enter” to continue.
*Within the appearing window, click “HKEY_LOCAL_MACHINE,” “System,” “CurrentControlSet,” “Services,” and “MSIServer” to expand the headings.
*Right-click “ImagePath” in the right side-pane to select “Modify”.
*Type the location of the Msiexec.exe file that you noted previously in the “Value Data” box and click “OK”.
*Then, click “Exit” to close the Registry Editor.
*Shut down the computer and restart it into safe mode.
* Once you have been in safe mode, go to “Start”, “Run” and type “msiexec /regserver” without quotation marks in the box and click “OK” to go.
*Then, the Windows Installer will be re-registered correctly. After a restart, you will be able to install or uninstall your programs without a Windows Installer error message.
If you find the above Windows Installer repair process a little complicated, directly uninstall the one from your computer and re-install it again. This helps to refresh your system with all new versions of Windows Installer files and most of the time deal with a Windows Installer error immediately.
Fourthly, to prevent and fix Windows Installer error you still need to run the System File Checker (SFC) to make sure that all system files are clean and accessible without errors. It is a known fact that the Windows Installer engine has to rely on some system files to install, repair or uninstall a program. If cannot be located smoothly, a Windows installer error message will soon display. Thus, go to Start, Run, type “CMD” to bring the Command demand, enter “sfc/scannow” and press Enter to go. This way, it will automatically scan the whole PC and replace all broken, corrupt or missing system files with a fresh new one.
Lastly, detect and repair computer registry errors. You should bear in mind that whenever you want to run the computer and all installed programs properly, you have to optimize the Windows system and empty all the craps inside. The registry entries are the vital settings and information that required for either the hardware or software to run properly; thus, it is regarded as one of the most important components of Windows-based operating system. But as time goes on, they will be destroyed or full with thousands of invalid, broken, corrupt entries, which will greatly affect the computer running and the Windows Installer engine. This is to say, if the installer engine cannot locate the required entries to install or uninstall a program, you will soon get a Windows Installer error message. So, the final Windows Installer repair step is to run an excellent registry cleaner to completely scan the whole PC and get rid of all registry errors.
Simply speaking, a Windows Installer error can most of the time be caused by a problem existing either in the engine itself or the computer. No matter what the cause is, the above Windows Installer repair process will help you troubleshoot and solve the error soon.
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