Installing SH4 in Windows 10
 

I have installed my game after upgrading to win 10. However, the game would not start. I then removed SH4 and reinstalled it. It still will not run. I again uninstalled and reinstalled on the H drive{ssd} as follows, H/Ubisoft/Silent Hunter 4/. It still would not run.

My computer is a home build w/ Asus MAXIMUS VII HERO Z97 mother board w/ Intel Core i7-4790K Devils Canyon Quad Core 4.0GHz CPU. 4 hard drives with 16GB ram Nvidia 970 GTX 4GB video card.

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Try running your SH4.exe and any other applications as administrators.
Plan B > OS 10 run in compatibility mode OS7.

Thanks, I will try it.

Welcome aboard!
 

The last upgrades from Microsoft have whacked many programs.
I got rid of Windows 10 and went back to Windows 7 to solve the issues.
Not saying SH3/4 won't run on Win 10 but it's a sign to me.

I have SH3 & SH5 running on Windows 10. I do not have SH4 installed at the moment but, since SH3 runs, it should run as well.

Jeff, I think Windows 8.1 and 10 will run SH3, 4, and 5 if it's the 32 bit OS... at least better than the 64 bit version. I can't run any of them with the 64 bit version. I've even reinstalled XP for playing SH3, 4, and 5. None loaded yet but 3 should be this weekend. Remember, SH3 was built to run on an XP 32 bit system. XP 64 bit had to be finessed to get it to run properly.

What I need to do is get 8.1 32 bit installed on a HDD and see what happens. I'm even thinking of going to Windows 7 32 bit and getting rid of 8.1 altogether.

I also have found software from LapLink called PC Mover Ultimate that will let you "transfer" programs from one computer to another without having to reinstall them and use a key code.

SH3 & SH5 are running fine on Windows 10 64 bit for me. I ran SH3, SH4, and Sh5 all on Windows 7 64 bit too. Only thing I had to do was NOT install in the Program Files or Program Files (x86) folders where the UAC would mess with them, and patch the .exe with the 4GB patch, and away I sailed.

i am running sh3/4/5 on windows 10 64bit the thing I found was that it was ok after the anniversary update but after a fresh windows install the document files default to one drive