Error Code 8-0x00003700 in Rainbow Six: Siege commonly appears when you are trying to create a premade group (squad) with your friends, and this error prevents you from playing the game. Here’s what you should do to fix error 8-0x00003700 in R6S.
How to Solve Error Code 8-0x00003700 in Rainbow Six: Siege
Nobody likes to deal with errors, but let’s go step by step with this nasty error 8-0x00003700 because it definitely can ruin your gaming experience.
1. Check if Rainbow Six Siege is down or has other server issues
The first line of troubleshooting is to check if the problem lies on your machine or not. Luckily for us, Ubisoft has made available theofficial server status page for Rainbow Six Siege. If there are no issues, then the problem might be on your end.
2. Restart the game
If this is your first time getting the error, a simple restart of the game could help. If you just can’t manage to make a squad lobby successfully after a restart, we need to go deeper with troubleshooting steps.
3. Check your internet connection
I’ve made a checklist of things related to your internet connection that you should check out.
4. Verify the game files and/or reinstall Rainbow Six: Siege
you may verify the files in your local R6S installation on Steam by right-clicking Rainbow Six: Siege in your Library, going to properties -> installed files, and in the window that appears, you will see the “Verify Integrity of Game Files” button. Click it, and let Steam check everything for you.
If any damaged or corrupted files are found, they will be replaced for you, free of charge!
I know you won’t like to read this but, if this doesn’t solve the error either, you’ll need to just reinstall the whole thing. It is a big download, but this is a last-resort measure.
If you and your playgroup are interested in checking out an R6S spinoff, check out our comparison article betweenRainbow Six Extraction and Rainbow Six Siege.
Nikola has been a Staff Writer at Prima Games since May 2022. He has been gaming since being able to hold an Amiga 500 joystick on his own, back in the early 90s (when gaming was really good!). Nikola has helped organize dozens of gaming events and tournaments and has been professionally attached to gaming since 2009.
