When you try to install a Microsoft Windows Installer package, you may receive the following error message: Error 1603: A fatal error occurred during installation. If you click OK in the message box, the installation rolls back.
Cause for Error 1603: A fatal error occurred during installation
You may receive this error message if any one of the following conditions is true:
1. The folder that you are trying to install the Windows Installer package is encrypted.
2. The drive that contains the folder that you are trying to install the Windows Installer package is accessed as a substitute drive.
3. The SYSTEM account does not have Full Control permissions on the folder that you are trying to install the Windows Installer package too. You notice the Star Citizen Installer error message because the Windows Installer service uses the SYSTEM account to install the software. Read How to Install Software Without Admin Rights here.. Read How to Install Software Without Admin Rights here..
Fix Error 1603: A fatal error occurred during installation
For automatically fixing this issue use the fix it tool by Microsoft’s.
Now if the above didn’t work out for you then follow this guide:
1)Double click “This PC” on your desktop.
2)Right-click the drive where you want to install the program and Choose “Properties.“
3)Click the “Security” tab and then click the “Edit” button.
4)Check “Allow” next to “Full Control” under the subheading “Permissions” inside the user name “SYSTEM” and click “Apply” then “OK.”
5)If you can’t find “SYSTEM” there, then click “Add” and under object name write”SYSTEM” click “OK” and repeat the step 4.
6)Now go back to the Security tab and click on “Advanced.“
7)Check “Replace permission entries on all child objects with entries shown here that apply to child objects.” Click “OK.” Check “Reset permissions on all child objects and enable propagation of inheritable permissions” if you use other versions of Windows. Click “OK.”
8)Click “Yes” when prompted.
9)Double-click the installer package and you will no longer have any issues with it.
Method 2: Install Ownership Registry Hack
1.Download and unzip the files.
2.Double-click the InstallTakeOwnership.reg file.
3.Right-click the on the file which is giving the Error 1603 and select take Ownership.
4.Again try to install the installer package and the issue is successfully fixed.
5.If for some reason you want to delete the Install Ownership shortcut, just double click RemoveTakeOwnership.reg file.
Method 3: Restart the Windows Installer Service
1.Press Windows Key + R then type services.msc and hit Enter.
2.Find Windows Installer service then right-click on it and select Properties.
3.Click on Start if the service is not already running.
4.If the service is already running then right-click and select Restart.
5.Again try to install the program which was giving access denied error.
Method 4: Re-register Windows Installer
1.Press Windows Key + X then select Command Prompt (Admin).
2.Type the following command into cmd and hit Enter after each one:
%windir%\system32\msiexec.exe /unregister %windir%\system32\msiexec.exe /regserver %windir%\syswow64\msiexec.exe /unregister %windir%\syswow64\msiexec.exe /regserver
3.Reboot your PC to save changes.
4.If the issue is not resolved then press Windows key + R then type the following and hit Enter:
%windir%\system32
5.Locate the Msiexec.exe file then note down the exact address of the file which would be something like this:
C:\WINDOWS\system32\Msiexec.exe
6.Press Windows Key + R then type regedit and hit Enter to open Registry Editor.
7.Navigate to the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSIServer
8.Select MSIServer then in the right window pane double-click on ImagePath.
9.Now type the location of the Msiexec.exe file which you noted above in the value data field followed by “/V” and the whole thing would look like:
C:\WINDOWS\system32\Msiexec.exe /V
10.Boot your PC into safe mode using any of the methods listed here.
11.Press Windows Key + X then select Command Prompt (Admin).
12.Type the following command and hit Enter:
msiexec /regserver
%windir%\Syswow64\Msiexec /regserver
13.Close everything and boot your PC normally.
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That’s it you have successfully fix Error 1603: A fatal error occurred during installation but if you still have any questions you can ask them in the comments section.