Major Description
Description of the bug:
ReactOS can't install a setup upgrade (.msp file, Windows Installer Patch) directly from the Shell, explorer.exe. We need an implementation of that feature.
Workaround for now: We can use the "msiexec /p X:/file.msp" to execute that setup, so the functionality is in our code. We only need the explorer thing.
Implementation: Similar as .msi does, we have to be able to setup it through the explorer.
Steps to reproduce:
Just setup a MSI (like the example, "MSI file.msi") and use the file (MSP file.msp) with the command above with the suitable filename. The thing will work, simply. It should work like on windows on shell.
Link (only for testing purposes!!!!): (TESTING LINK MSI FILE) TESTING LINK MSP FILE