If you own a VR headset and have encountered the error, this is the article you need. We have listed a few troubleshooting steps to diagnose and fix the problem with ease.
How do I fix SteamVR connection trouble error 436?
1. Update GPU drivers with DriverFix
Outdated and corrupted graphics driver can also affect SteamVR operation and result in an error. You can easily update graphics drivers on your PC using DriverFix.
DriverFix is a popular Windows utility that allows you to update outdated and missing drivers on your Windows system with a few clicks. You can choose to update a single or all the outdated drivers recommended by the tool at once.
With lightning-fast scan and included driver manager, managing driver updates is easy. It also comes with a schedule manager that allows for automatic scans, updates and backup of drivers.
Key features of DriverFix:
- Huge driver database of over 1.8 million files
- Built-in download manager and schedule manager
- Driver backup feature to automatically create driver backup


DriverFix
Easily resolve the SteamVR error 436 by using this powerful software.
2. Check for a loose connection
SteamVR uses a tether cable to connect the headset to your PC. If the tether cable is not connected properly, it may lead to a connection error. So, make sure the cable used to connect the device is firmly connected.
Some VR headsets like the HTC Vive require the users to firmly plug in the cable as they tend to have resistance levels before it is connected, offering a firm connection.
Make sure to check if the cables at both ends are firmly connected before you move onto other fixes below. Make to relaunch the SteamVR client after inspecting the connection issues.
3. Unblock SteamVR add-ons
- Disconnect your VR headset from the computer. Disconnect any other controllers or VR accessories that you may have connected to the PC.
- After disconnecting the devices, click the SteamVR icon in the taskbar.
- Select Settings from the context menu.
- In the Settings menu, open Startup / Shutdown.
- Select Manage SteamVR Add-Ons from the startup option.
- Click the Unblock All button under the Manage SteamVR Add-Ons section.
- Scroll through the list of add-ons to see if any of them are blocked. Click the Unblock button manually if required.
- Close the SteamVR app and reconnect your VR headset and accessories to the computer.
- Relaunch SteamVR and check if the error code 436 is resolved.
If you have third-party SteamVR add-ons installed, check if they are blocked. At times, the add-ons that SteamVR is relied on to offer additional features can get blocked due to system crashes.
To fix the problem, you should unblock all the add-ons that are affected by the crash. Several users have reported that unblocking SteamVR add-ons have helped them resolve the issue.
This post was written by Tashreef Shareef and was first posted to WindowsReport
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