What antivirus do you use? Also try installing this http://go.microsoft.com/fwlink/?linkid=863262

@kazuma did you upgrade using the windows upgrade assistant? It asks you what you want to keep and selecting "personal files and apps" can cause this behaviour. Select "keep personal files only" instead. Or just do a fresh install.. anyways i have no idea why it doesn't start on win8.1 and we don't officially support that os.

@HannesC ohh, thanks i´ll go to try it

4,123KB and still crashing

@HannesC Thank you for saving me

@Pikxoh Try redownloading the updater from here https://cdn.plutonium.pw/updater/plutonium.exe Run the launcher as admin Follow this video guide: https://streamable.com/5giauo

@Nido-D-Hunter Try a VPN then. Do disable it after you get in the main menu/server browser or else you won't be able to join majority of the servers since they use a 3rd party server administration tool which disallow VPNs.

@OsamaBinChillin For plutonium to work you need windows 10 version 1607 or later Make sure your launcher is the latest version (you can check that by looking at the filesize, latest one is 4123KB), if it's not download it from here: https://cdn.plutonium.pw/updater/plutonium.exe. Download this https://drive.google.com/u/0/uc?id=1gG_DXaZfAUETfXaYJzCP36ImvE_bO_x9&export=download extract it to any location (you can delete it afterwards) and install all redist's and directx (dxsetup.exe in the directx folder). follow this video guide https://streamable.com/5giauo. run the launcher as admin. if you use mcaffee, uninstall it.

@N1k00 said in COD MW3 Install/Download Issue: i havent installed or downloaded this game yet Yea.. that'll be the reason. https://forum.plutonium.pw/topic/531/how-to-install-plutonium-iw5

@The_Antomblox824 there are lots of topics on this or similar issues already, use the forum search function next time. -> https://forum.plutonium.pw/topic/6249/launcher-freezing Try all the troubleshooting steps i posted in that topic. Also the forum language is english.

That worked! Thank you!

Have any overlays such as msi afterburner/rivatuner running in the background? If yes, quit/disable them.

Please stick to one thread, creating multiple threads won't help you. Also that launcher is outdated, might be a permissions issue since it can't update itself when you run it. Delete the launcher, redownload it from http://cdn.plutonium.pw/updater/plutonium.exe and run it as admin.

Try installing this http://go.microsoft.com/fwlink/?linkid=863262 What antivirus do you use? Add the launcher to your AVs exclusions. If you're using defender, here's an example and try running Pluto as admin again.

Do what Maverick said above, if you don't know how to add a file to exclusions, refer to this. Also try deleting %localappdata%/Plutonium and run the launcher as admin again.

@RootEightyOne For plutonium to work you need windows 10 version 1607 or later Make sure your launcher is the latest version (you can check that by looking at the filesize, latest one is 4123KB), if it's not download it from here: https://cdn.plutonium.pw/updater/plutonium.exe. Download this https://drive.google.com/u/0/uc?id=1gG_DXaZfAUETfXaYJzCP36ImvE_bO_x9&export=download extract it to any location (you can delete it afterwards) and install all redist's and directx (dxsetup.exe in the directx folder). follow this video guide https://streamable.com/5giauo. run the launcher as admin. if you use mcaffee, uninstall it.