How to fix and clean Windows Installer

Special Offer
Windows 10, 8, 7

The following steps may repair the issue:

CompatibilityWin 10, 8, 7
Download Size21.2 MB
Requirements300 MHz Processor, 256 MB RAM, 50 MB HDD

Limitations: trial version offers an unlimited number of scans, backups and restores of your Windows system elements for free. Registration for the full version starts from USD 29.95.

Windows Installer is a service in Windows operating systems, first introduced in Windows XP. It is used in both software installs and uninstalls, as well as software maintenance. Microsoft encourages all software developers to utilize Windows Installer as the basis for their software installation packages to ensure smooth installs, updates and uninstalls. Windows Installer issues may occur due to damaged or missing files, corrupt or outdated system elements entries or the installer files not being properly accepted in system elements. Software that has been uninstalled from the system may leave traces and shortcuts behind in Windows Installer, which may in turn lead to more issues. Cleaning Windows Installer may help prevent such issues from occurring and may promote stable future installs and uninstalls.
It may be possible to resolve Windows Installer issues with a special software that repairs system elements and tunes up system settings.

The article provides details on the symptoms, potential causes and ways to clean Windows Installer and repair related issues.

Symptoms of Windows Installer issues

One of the most common symptoms of a Windows Installer issue is a failed installation or uninstallation of a software application, which often brings up a message that reads something similar to the following: "Windows Installer service could not be accessed", but other warning messages are also possible. The issue log that gets created when the issue occurs may contain additional information that can help an IT professional locate the source of the malfunction and get it repaired.

Causes of Windows Installer issues

Windows Installer issues are typically caused by missing or damaged installer files or corrupt system elements entries related to the Windows Installer service. The Windows Installer service not being properly accepted in system elements is another common reason for this issue type.
Incomplete software uninstalls may leave traces in Windows Installer and cause various issues in the service.

Ways to clean Windows Installer and repair issues

Advanced PC users may be able to manually clean Windows Installer from traces of uninstalled software, as well as use the information provided in the warning message and the log to pinpoint the issue cause and repair it by manually editing system elements. However, since any manipulations with system elements entries carry a risk of rendering the operating system unbootable, whenever a user is in any doubt of their technical skills or knowledge, they may use a special software that is meant to repair system elements without requiring any special skills from the user.

The following steps may help clean Windows Installer and repair related issues:

The same application can be used to run preventative measures to reduce the chance of this or other system issues appearing in the future.