If you are reading this, you’ve likely come across the dreaded error code 400 on your HTC Vive headset. After going through numerous different error codes I’ve realized two things about error code 400 on the HTC Vive – It’s widespread and it’s a real pain in the ass. After many hours, I’d almost given up but one simple solution seemed to do the trick. By the way, the video card I have in my PC is an Asus GeForce GTX 1080. It looks like the photo pictured below.
Spoiler Alert: To make a long story short, or if you just want to jump to the solution, I was able to solve the problem (and get better performance with my HTC Vive) after I completely disabled and uninstalled ALL of the manufacturer provided software. This includes the GeForce Experience software. I don’t have a real technical answer as to why this worked, but after spending hours with no solution this solution has so far proven to be fantastic.
Note: HTC Vive and GeForce GTX 1080 – Don’t bother with DP or MiniDP. It is not compatible yet.
As a side note, I originally arrived at error code 400 after “solving” error code 208 with my particular video card. If you are planning or hoping to use a displayport cable with your HTC Vive / GTX 1080 combo it will likely not work. As of this time, a DP to MiniDP connection is not compatible with the HTC Vive and 1000 series Geforce GTX cards. Save yourself some time. Don’t bother.
HTC Vive Error Code 400: What worked for my GTX 1080
I tried everything. I visited numerous forums recommending uninstalling SteamVR, uninstalling the USB drivers, reinstalling all VIVE software, messing with advanced settings in SteamVR, and literally wanted to throw my Vive in the garbage. Up until this point, I got intermittent errors quite frequently.
Major bummer. My HTC Vive was now completely bricked.
As a last ditch effort, I started playing with the advanced video card settings provided by the Nvidia control panel. Nothing there worked either. Then I had a crazy idea – what if I just try to delete all of my video card drivers and software. Windows 10 should have updated drivers, right?
Worst case scenario? I end up reinstalling drivers and software.
To my surprise, after I rebooted my machine all appeared normal. Windows 10 recognized the card and installed drivers. Wonderful. Next, I loaded Steam and crossed my fingers as I opened SteamVR. It worked! Next, I began trying various games and VR titles to see if there was a performance drop. To my surprise, VR performance honestly improved.
Prior to this, I had also been having performance issues with various titles (when my Vive did work). Removing all Nvidia software has seemed to clear up these issues as well. For example, Fast Action Hero was simply unplayable before. It works fine now. In fact, that’s a damn fun game for the price.
Another bonus: The Unreal Engine responds better.
If you are getting error code 400 and nothing else seems to work, and you have an Nvidia card, try to remove the software stack provided by Nvidia and just use the standard Windows 10 drivers. Personally, I never used the Nvidia control panel so I lost nothing and of course, I can find something to replace GeForce Experience.
If this solution worked for you, let me know. Also, if you found a better way to solve this issue or have found working settings that fix error code 400 on the Geforce GTX 1080 permanently that doesn’t involve totally removing all Nvidia software please let me know. Thanks for reading!
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