How to fix WoW error 134

World of Warcraft is a massively popular multiplayer online role-playing game developed by Blizzard Entertainment.  However, at times when launching the game, you may encounter the WoW error 134.

The full error reads:

ERROR #134 (0x85100086) Fatal condition! Failed to open required archive

According to Blizzard, this error may occur when the World of Warcraft is prevented from making changes to a game file. It can be caused by incorrect permissions, antivirus program blocking the connection or corrupt installation.

In this article, we take a look at the best solutions to fix the WoW error 134 on your PC.

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How do I fix the WoW error 134 Fatal conditions?

1. Run Battle.net as administrator

1. Right-click on the Battle.net desktop application icon.
2. Select Properties.
3. Click Change settings for all users.
4. Under Settings, check Run this program as administrator.
5. Click Apply.
6. Click OK to save the changes.

Launch Battle.net and open World of Warcraft to see if the error is resolved.

Running the Battle.net launcher as an administrator can fix issues that may occur due to permission, patching, networking, and start-up issues.

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2. Repair World of Warcraft

1. Launch the Blizzard Battle.net desktop app.
2. Select the World of Warcraft game.
3. Click on Options.
4. Select Scan and Repair.
5. Click Begin Scan.
6. The repair tool will scan the game installation files and repair any corrupt files.
7. Relaunch the launcher and check if the error is resolved.

3. Check your antivirus for issues

Turn off firewall

1. Click Start and select Settings.
2. Go to Update and security.
3. Click on Windows Security.
4. Click on Firewall and network protection.
5. Open your currently active network (Home, Public, Private).
6. Toggle the switch to turn off Windows Defender Firewall.

If you are using a third-party antivirus solution, you can disable the tool from the taskbar temporarily. Right-click on the antivirus icon in the System Tray and select Disable temporarily.

Once disabled, launch Battle.net launcher and try to open World of Warcraft. If the issue is resolved, make sure to add the game to whitelist.

At times, you may have to uninstall your antivirus to fix the fatal condition error completely. Check the Blizzard battle.net security software page for different antivirus compatibility with the game.

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4. Update Windows and hardware drivers

Update display driver

1. Press Windows Key + R to open Run.
2. Type DxDiag and click OK.
3. In the DirectX Diagnostic Tool, open the Display.
4. Note down the driver version.
5. Open your graphics card manufacturer website.
6. Download the latest version of the display driver for your GPU.
7. Once installed, relaunch Battle.net and check if the error is resolved.

At times, Windows update may come bundled with necessary drivers update for your device that fixes glitches and bugs found in the previous update. Try updating your Windows OS to see if that helps you fix the error.

1. Press Windows Key + I.
2. Go to Update & Security.
3. Download and install all the pending Windows updates.
4. Make sure you have sufficient internet bandwidth as some Windows updates can be in GBs.

Update network drivers

1. Press Windows Key + R.
2. Type devmgmt.msc and click OK to open Device Manager.
3. Expand the Network adapter
4. Right-click on your network adapter.
5. Select Update Driver.
6. Select Search for update driver software automatically.
7. Wait for Windows to download and install any pending updates.
8. Reboot the computer and check for any improvements.

If Windows fails to find a newer version of the website, you can visit the network adapter manufacturer or your laptop manufacture website to find the new drivers and install them manually.

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5.  Uninstall and reinstall World of Warcraft

1. Press Windows key + R.
2. Type appwiz.cpl.
3. Select World of Warcraft from the list of installed apps.
4. Click on Uninstall.
5. Click Yes to confirm.
6. Once uninstalled, open the file explorer, navigate to the following location, and delete WoW related files from the folder.
   C:\Documents and Settings\Local Settings\Temp
C:\Windows\Temp
C:\Program Files\gametitle
C:\Program Files (x86)\gametitle
C:\Program Files\Common Files\Blizzard Entertainment
C:\Users\Public\Games\gametitle
C:\Users\Public\Public Documents\Blizzard Entertainment\gametitle
7. Empty the recycle bin.

Once the game is uninstalled, you can reinstall it from the Battle.net launcher. Reinstalling the game can fix any issues that may occur due to corrupt installation or missing files that the built-in troubleshooter couldn’t fix.

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The WoW error 134 can be fixed by troubleshooting your system for permission issues, corrupt installation, or driver issues. As a last resort, try reinstalling the game to see if it fixes the error.