I think something wrong with "Windows Installer" in my "Windows 8.1 Core x64" (With latest updates) operating system.
Can't install some softwares. Installation gives "Error 1603: Fatal Error During Installation."
I have a Windows installation disc. I want to upgrade to Windows Professional edition. When i insert the installation disc and run Setup.exe nothing happens. Doesn't even see Setup.exe in Task Manager. It runs and dissappear instantly.
I try to fix the problem by using "Windows Fix It" on this link: http://support2.microsoft.com/mats/program_install_and_uninstall/tr , when i run it it says some error happened and can not continue to solve problems. It doesnt give any technical information about the error.
What i tried :
With command prompt, Dism.exe /online /cleanup-image /restorehealth after this command Sfc /Scannow . It doesn't find any problems.
Checked if "Windows Installer" service is running. Found out that it's running and even tried to stop it and restart the service. No problem here.
With command prompt tried these commands : "Msiexec /unregister" , "Msiexec /regserver"
Checked if system-drive has proper rights for "System" user. It looks like "System" has full rights on system-drive.
Cleaned temporary folders with Ccleaner.
Searched for registry problems with Ccleaner.
Additional information about my operating system:
I'm %100 sure that it doesn't has any malware, spyware, rootkit or virus. Scanned whole system with well known softwares.
Operating system doesn't have any security software running in background when trying to install something. So, nothing trying to block installations.
Operating system doesn't have any 3rd party background service or runing 3rd party applications when trying to install something.
Drives are not encrypted.
Operating system is up-to-date. Installed latest updates with "Windows Update". No problem here.
System restore is disabled in all drives. There is no system restore points stored. (Because of performance issues)
All drivers are up-to-date.
Reinstalling the operating system is not an option for me. Because i have installed 100+ games, 100+ applications. I can't clean install all of them again :(
Some info about me:
I have lots lots lots of experience with Windows Operating systems and i love to heavy customize Os. Maybe i did something wrong this time i don't know. I like to come across these types of problems and solving them. But this time i failed.
What should i try?