Use the steps below to troubleshoot installation issues for Diablo® III.
- You may not have the proper permissions. Create a new administrator account and try again.
- If you are using Windows Vista, Windows 7, or Windows 8, run the game in Administrator Mode to address many installation errors.
- To resolve any issues with your Battle.net Update Agent (Agent.exe), try these steps:
- Bypass your router by plugging your computer's ethernet cable directly into your modem.
- Stop the installation process if it’s still running.
- Wait for at least one minute. Ensure that Agent.exe no longer appears in the Processes tab of your Task Manager.
- Restart the installation.
- Try deleting the C:\ProgramData\Battle.net folder, then reattempt the installation.
- Some connection issues can be caused by interference from security software. See our Disabling Security Programs guide for assistance.
- Programs running in the background can interfere with the game. Close any running background applications.
- Check your Diablo III DVD for damage. If your disc is too damaged to work, you can download the game instead.
- Ensure that Windows' Secondary Logon is enabled, which Agent requires to run correctly.
- The file being read may be corrupt. Run Check disk and defragment your hard drive to try to repair any bad sectors.
- Errors in your computer’s physical memory can cause the game to crash. Run the Memory Diagnostic Tool.
- Certain malicious software can lock down necessary data that the game needs to run. Run a virus scan.
- Run the game in Administrator Mode to address many installation errors.
- Ensure your Mac meets the Diablo III System Requirements and has 12 GB of free HD space.
- Our games require an up-to-date operating system to run properly. Run Software Update to be sure you're using the most recent version.
- Sometimes third party archiving applications can extract files with invalid permissions. Using Apple's Archive Utility will extract the files with proper permissions.
- Due to the way the launcher installs and updates our games, security programs can interfere with the process. Disable or temporarily uninstall your security software to resolve this issue.
- Programs running in the background can conflict with the Update Agent. Try closing background applications.
- The folder may be saved on a corrupt hard drive sector. Run the Repair Disk utility to resolve hard drive issues.
- If you're using a wireless connection, switch to a wired connection and optimize your internet connection to rule out a connection issue.
- Configure your network to ensure that your connection is not being blocked by a firewall or router.
- Run the Apple Hardware Test to ensure that there are no physical problems with your hard drive.
Tried everything here?
Updated: Apr 11, 2014
Article ID: 4700047
Article ID: 4700047