It asks for a serial number when trying to play single player like campaigns on Windows 10.

The solutions proposed in other threads like running game as administrator do not work for me.

If I run exec directly form installation folder the game do not when I press cancel after prompted to enter serial. If I run it from GOG Galaxy it will crash if the serial is not entered complaining about Access Denied.

Also cannot find any valid serial numbers as workaround.

It is Settlers 3 Ultimate Edition. The version it says it is is 1.60. I tried re-intalling it already and also didn't help.

Panic! Help!

Contact GOG support.

I've jsut bought the game and installed it and am having the same issue

Same here. Doesnt work without a serialnumber

Same problem.

Same here

same here

www. siedlercommunity. de/siedler3/ seriennummer/

Its legal.

You get a serial number with your purchase. Look in your account on the GOG site, on the game's page there should be a serial number under "More", so you shouldn't need to get a serial from anywhere else.

The Problem is i dont have one. It says already used.

Ah, okay. That's weird.


Are you looking on the actual website? It doesn't work from within the Galaxy client.

Run as administrator 'regs.cmd' from main directory. Worked for me.

I managed to have it up and running and spend a great rainy weekend with it. Thanks to the serial number from cerberus707.
On loading saved games it doesn't ask for serial again.
So www. siedlercommunity. de/siedler3/ seriennummer/ was a WORAROUND for a problem to me.
Thanks cerberus707 again!

worked for me aswell.