The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed
问题 I have an issue when I tried to install an EXE file on windows server 2012 R2. When I tried to execute the EXE or MSI file I got below 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." I tried the following methods to fix the issue but nothing worked. Method 1: I tried to unregister and re-register msiexec file %windir%\system32\msiexec.exe /unregister %windir%