Also, users complain about running into Steam needing to be online to update error.

What is a fatal error?

A fatal error is an error that appears on a device for numerous reasons, causing your program to terminate without prior warning or saving its state. It stops a program from running due to faulty hardware, bugs, viruses, and other issues. The error message reads Fatal Error: Steam must be online to update. Please confirm your network connection and try again. However, encountering the fatal error on Steam Deck returns halts any activity on the program.

What causes fatal errors in Steam Deck?

Some common causes include:

Network connection issues – When not connected to a stable and fast network connection, it can prevent the device from connecting to Steam servers and result in a Fatal error. Issues with Steam servers – Without access to the Steam servers, you can run into the Fatal error on Steam Deck because they cannot be reached. Corrupt game files in the Steam library – Some of your installed games in the Steam library on the Deck can be corrupted or compromised, resulting in a Fatal Error.

The factors responsible for the Fatal error in Steam Deck may vary depending on the device. Nonetheless, we’ll take you through some fixes to resolve the error.

How do I fix the Steam Deck fatal error?

Before trying any advanced steps for the error, proceed with the following: SPONSORED

Check your network connection and restart your router. Check Steam’s official Twitter page to check if there’s any update regarding the server. Restart the Steam Deck handheld a few times and check if the Fatal error persists.

If you still have this problem after the preliminary checks above, try the solutions below to fix it.

1. Use your Android phone’s mobile tethering

This way, your Steam Deck will be able to use your phone’s internet connection and will be able to go through with the update.

2. Use a keyboard

3. Update Steam Deck firmware

Updating the Steam Deck will install the latest patches for fixing bugs and improving its overall performance. It will resolve the Fatal error. You can read our guide on updating the Steam Deck Software for more details.

4. Verify the integrity of your game files

Verifying your game files will resolve issues with poorly installed games. Read what to do if you can’t verify game files integrity on Steam.

5. Factory reset Steam Deck

Resetting the Steam Deck handheld will clear any corrupt files and apps that may cause the Fatal error to occur. Also, our readers can check how to run Android apps on Steam Deck in a few steps. For more questions or suggestions on this guide, kindly use the comments below.

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