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Solved: How do I fix Battle.net Agent error BLZBNTBNA0000000C while loading game information

Problem Symptom

Gamer reported BLZBNTBNA0000000C error prompt when installing Blizzard Battle.net desktop client application, because unable to recognize digital certificates.

The detailed error message is as below:

Oops!
An error occurred while loading game information:
We couldn’t verify the digital signature of your Battle.net Agent. Follow the steps in this support article to fix this issue.
More help: BLZBNTBNA0000000C

无法验证战网Agent的数字签名,请按照此支持文章里的步骤处理。
错误代码: BLZBNTBNA0000000C

Solved: How do I fix Battle.net Agent error BLZBNTBNA0000000C while loading game information

Solved: How do I fix Battle.net Agent error BLZBNTBNA0000000C while loading game information

Follow the below solution steps to resolve Battle.net Agent error BLZBNTBNA0000000C while loading game information.

Content Summary

Potential Causes
Solution 1: Update or temporary uninstall security software
Solution 2: Update driver and operating system
Solution 3: Enable Secondary Logon service
Solution 4: Create new administrator account
Solution 5: Reinstall Blizzard Battle.net desktop client app
Solution 6: Manually reinstall digicert SSL certificates
Solution 7: Download certificate for Linux Firefox
Solution 8: Contact Microsoft Support
Reference

Potential Causes

  • Battle.net desktop app files on system have become corrupted.
  • Corrupted Battle.net cached files
  • Antivirus or firewall software could be causing BLZBNTBNA0000000C error if the software is out-of-date or configured to mistakenly identify the Battle.net desktop app’s processes as a security threat.
  • Damaged or missing Windows system files.
  • Issue with how the old Windows user account is configured.

Solution 1: Update or temporary uninstall security software

Antivirus and firewall application software may prevent Blizzard software from running, installing, or patching correctly. Updating or temporarily uninstalling the security software can help to resolve these issues.

Refer to ESET KB146 Uninstallers (removal tools) for common Windows antivirus software article for a comprehensive list of common security program and antivirus uninstallation tools.

If you are not comfortable to configure or uninstall the security software, you may like to contact the security software’s technical support to help you configure their product to not interfere with future game installation and patching.

Below is the list of game-friendly security programs:

Solution 2: Update driver and operating system

Update the drivers and operating system to resolve any compatibility issues. Apply steps below to check and update your drivers.

Update video card drivers on Windows

Step 1: Press the Windows + R key to open the Run box.

Step 2: Type DxDiag in the Run box and click on the OK button to open the DirectX Diagnostic Tool.

Step 3: Click the Display tab.

Step 4: Note the video card’s name and manufacturer listed in the Device section. The current driver version is listed in the Driver section.

Step 5: Browse to the driver manufacturer’s website to download the latest version of driver.

Update sound card drivers on Windows

Step 1: Press the Windows + R key to open the Run box.

Step 2: Type DxDiag in the Run box and click on the OK button to open the DirectX Diagnostic Tool.

Step 3: Click the Sound tab.

Step 4: Note the current driver version listed in the Driver section.

Step 5: Browse to the driver manufacturer’s website to download the latest version of driver.

Update network card drivers on Windows

Step 1: Click the Start or Windows + Q key in Windows 8.

Step 2: Click the Control Panel > System.

Step 3: Click the Hardware tab.

Step 4: Click the Device Manager.

Step 5: Expand the Network Adapters category. Note the network card name and model listed.

Step 6: Double-click the network card listed.

Step 7: Click the Driver tab.

Step 8: Note the driver date and version.

Step 9: Browse to the driver manufacturer’s website to download the latest version of driver.

Update motherboard chipsets on Windows

Search on for a program that will tell you what type of motherboard you have, then visit the manufacturer’s website for the update.

Update Windows OS

Use the Microsoft Edge to open the Windows Update link.

Software update for macOS

Refer to Apple’s OS X: Updating OS X and Mac App Store app page for Software Update instructions.

Reinstalling current driver and OS updates

Find the latest Combo Update for macOS located on Apple’s Support Download page.

Software upgrade

Blizzard titles require version 10.10 or newer to run properly. Refer to the instructions in Apple’s How to Upgrade guide, to update macOS to the most recent version.

Solution 3: Enable Secondary Logon service

The Secondary Logon service must be enabled for Blizzard games to install and run on an account without administrator permissions. Apply below instructions to enable Secondary Logon service in Windows.

Step 1: Press the Windows + R key to open the Run box.

Step 2: Type service.msc in the Run box and click on the OK button to open the Service Management console.

Step 3: Scroll down to locate the Secondary Logon service, right-click on it.

Step 4: Select the Properties option from the context menu.

Step 5: Select the Automatic option under the Startup Type dropdown menu.

Step 6: Click on the OK button.

Note: Some security programs may turn off or disable the secondary logon service. If the service is disabled again after you’ve switched it to automatic, you must configure the security program to stop disabling the service automatically.

Solution 4: Create new administrator account

Try creating a new administrator account to resolve permissions issues. Creating a new administrator account, logging into it, and reinstalling the Battle.net Desktop App on the new account. Move any user-specific files that you wish to keep from the old user account to the new admin account.

Create new administrator account on Windows 10

Step 1: Click the Start.

Step 2: Type Add User in the Search box.

Step 3: Select Add, edit, or remove other users from the search result.

Step 4: Click the Add someone else to this PC option.

Step 5: Follow the on-screen instruction to add a new user.

Step 6: Once the new user account is created, click on it.

Step 7: Click the Change account type option.

Step 8: Select the Administrator option and click on the OK button.

Step 9: Restart your Windows.

Step 10: Log in to the Windows using the newly created Administrator account.

Create new administrator account on macOS

Step 1: Click on the Apple menu.

Step 2: Select the System Preferences.

Step 3: Click on the Users & Groups.

Step 4: Click the Add (+) below the list of accounts.

Step 5: Choose the Administrator from the New Account pop-up menu.

Step 6: Enter a full name for the account.

Step 7: Enter the account password in the Password and Verify fields.

Step 8: Enter a hint to help you remember the password.

Step 9: Click the Create User.

Step 10: Log in to the macOS using the newly created Administrator account.

Solution 5: Reinstall Blizzard Battle.net desktop client app

Uninstall the Battle.net Desktop App and delete Battle.net files on Windows

Step 1: Press the Ctrl + Shift + Esc key together to open the Task Manager.

Step 2: Click the Processes tab.

Step 3: Select all Agent, Blizzard Battle.net desktop app, and game processes, and click the End Process button.

Step 4: Click the Start or Windows + Q key in Windows 8.

Step 5: Click the Control Panel > Uninstall a program.

Step 6: Right-click on the Battle.net or Blizzard Battle.net desktop app and select the Uninstall option.

Step 7: Press the Windows + R key to open the Run box.

Step 8: Type C:\ProgramData\ into the Open field and press the Enter key.

Step 9: Delete the Battle.net and Battle.net Tools folder to remove any remaining Blizzard Battle.net desktop app helper programs.

Step 10: Press the Windows + R key to open the Run box.

Step 11: Type the following path in the Run box:

  • %LOCALAPPDATA%
  • %APPDATA%
  • %TEMP%
  • %PROGRAMDATA%

Step 12: Delete any Battle.net and Blizzard folders inside each location if they exist.

Step 13: Empty the recycle bin.

Step 14: Restart the Windows.

Step 15: Login Windows using user account with Administrator right.

Step 16: Browse to Blizzard Download page to download the latest version of Blizzard Battle.net desktop client application.

Step 17: Reinstall the downloaded Battle.net app.

Uninstall the Battle.net Desktop App and delete Battle.net files on macOS

Step 1: Use the Activity Monitor to quit all Agent, Blizzard Battle.net desktop app, and game processes.

Step 2: Open the Finder.

Step 3: Select the Computer from the Go menu on the system menu bar.

Step 4: Navigate to the /Users/Shared directory.

Step 5: Delete the Battle.net folder.

Step 6: Navigate to the /Applications directory.

Step 7: Delete the Battle.net or Blizzard Battle.net desktop app folder.

Step 8: Hold down the Option (Alt) key and select the Library from the Go menu on the system menu bar.

Step 9: Delete the Battle.net folder in ~/Library/Application Support/Blizzard

Step 10: Navigate to ~/Library/Preferences and delete the following files:

  • com.blizzard.errorreporter.plist
  • com.blizzard.Installer.plist
  • com.blizzard.launcher.plist
  • net.battle.net.app.plist
  • net.battle.Authenticator.prefs
  • net.battle.Identity.prefs
  • net.battnet.battle.plist

Step 11: Delete the Battle.net Tools folder to remove any remaining Battle.net desktop app helper applications.

Step 12: Empty Trash​.

Step 13: Restart the macOS.

Step 14: Login macOS using user account with Administrator right.

Step 15: Browse to Blizzard Download page to download the latest version of Blizzard Battle.net desktop client application.

Step 16: Reinstall the downloaded Battle.net app.

Solution 6: Manually reinstall digicert SSL certificates

Follow the steps below to manually reinstall the digicert SSL certificates:

Step 1: Browse to DigiCert Trusted Root Authority Certificates.

Step 2: Locate the DigiCert Assured ID Root CA under the Root Certificates section and click the Download DER/CRT option.

Step 3: Double-click on the downloaded DigiCertAssuredIDRootCA.crt and click on the Open button.

Step 4: Click the Install Certificate…

Step 5: Select the Local Machine and click on the Next button. If the User Account Control dialog box pops up, click on the Yes button.

Step 6: Select the Place all certificates in the following store option and click on the Browse button.

Step 7: Select the Trusted Root Certification Authorities option and click on the OK button.

Step 8: Click the Next button.

Step 9: Click the Finish button.

Solution 7: Download certificate for Linux Firefox

Step 1: Close any running linux firefox.

Step 2: Execute the following command to install the wine firefox:

env WINEARCH=win32 winetricks firefox

Step 3: Browse to DigiCert Trusted Root Authority Certificates with wine firefox.

Step 4: Locate the DigiCert Assured ID Root CA (Download PEM | Download DER/CRT) under the Root Certificates section and click the Download option.

Solution 8: Contact Microsoft Support

Contact Microsoft’s Support to troubleshoot the problem.

Reference

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