An Unexpected Error Occurred While Trying to Install or Update

Keywords: BLZAPPAGT02600, BLZBNTAGT02600, 2600
An unexpected error occurred while trying to install or update. Please try again or contact Customer Support.​
Error Codes: BLZAPPAGT02600, BLZBNTAGT02600, BLZBNTAGT00000A28

An unknown variable has prevented the game from installing or updating and may show a specific error message relating to what went wrong. Try the steps below to resolve this issue.

Note: If you recieve a file is corrupted error, follow the steps in our File Appears to be Corrupt article.

Windows

  1. If your operating system is out of date, Battle.net may not work. Try updating Windows.
  2. Run Battle.net in Administrator Mode to address any installation errors.
  3. If you're using wireless internet, try switching to an optimized wired connection.
  4. Security software may interfere with Battle.net and prevent it from running properly. Disable or temporarily uninstall any security programs.
  5. Programs running in the background can conflict with Battle.net. Try closing background applications.
Advanced Troubleshooting
  1. Windows Secondary Logon service must be enabled for Battle.net to do its job. Ensure that the service is turned on.
  2. The file being read may be corrupt. Run Check disk and defragment your hard drive to try to repair any bad sectors.
  3. Errors in your computer’s physical memory can cause the installer to fail. Run the Memory Diagnostic Tool.
  4. Malicious programs may interfere with Battle.net. Run a security scan to find and resolve any infections.
  5. A bad installation disc may cause issues with installation. Download our fully patched installer from Battle.net Games Management.
  6. You may experience errors when Battle.net Update Agent files are missing or corrupt. Delete the Battle.net Tools folder to have the Battle.net Update Agent automatically re-create necessary files.

Mac

  1. If your operating system is out-of-date, Battle.net may not work. Run Software Update.
  2. Run Battle.net in Administrator Mode to address any installation errors.
  3. If you're using wireless internet, try switching to an optimized wired connection.
  4. Security software may interfere with Battle.net and prevent it from running properly. Disable or temporarily uninstall any security programs.
  5. Programs running in the background can conflict with Battle.net. Try closing background applications.
Advanced Troubleshooting
  1. The file being read may be corrupt. Run Repair Disk to resolve any corrupted hard drive sectors.
  2. Changes to your Mac's permissions may prevent Battle.net from running properly. Repair your disk permissions and reset game folder permissions.
  3. Errors in your computer’s physical memory can cause the installer to fail. Run the Apple Hardware Test.
  4. A bad installation disc may cause issues with installation. Download our fully patched installer from Battle.net Games Management.
  5. FileVault/FileVault 2 enabled Macs are not supported and may cause this error. Check for FileVault. If FileVault is enabled, disabling it may resolve the issue. For assistance with FileVault, please contact Apple.
  6. You may experience errors when Battle.net Update Agent files are missing or corrupt. Delete the Battle.net Tools folder to have the Battle.net Update Agent automatically recreate necessary files.

Tried everything here?

If you tried all the steps for your operating system and still need assistance, please visit our Battle.net Technical Support Forums or contact us and provide the above error(s).

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