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Diablo 3 Errors, Crashes, Freezes, Graphics, Lag and Performance Fixes

Diablo 3 Demon Hunter
Diablo 3 launched on PC today and if you were expecting a smooth launch day ride, you are in it for a surprise. Technical issues were bound to pop-up and they did, while some of them just require you to use your common sense, some of these can only be fixed following a thought-out workaround.

If you have been unlucky enough to come across those error codes, you will have an idea. Be it those annoying error codes, graphics issues or install problems, our troubleshooting guide will walk you through these issues with suggested workarounds to get you started with Diablo 3, hopefully today!

0# Diablo 3 Known Errors and Issues

Battle.net is down for maintenance. Please try again later.

  • Choose the correct region to fix this issue.. To choose the correct region – Navigate to Login screen > Options > Account, then select the correct region.

The servers are busy at this time. Please try again later. or ‘There is a temporary outage of the Battle.net Service. Please try again later’.

  • This error will occur when the servers are under a heavy load. Try logging in again after 5-10 minutes. It may take several attempts before you are able to successfully connect.

There is a temporary outage of the Battle.net Service. Please try again later.

  • This error will occur when the servers are under a heavy load. Try logging in again after 5-10 minutes. It may take several attempts before you are able to successfully connect.

Error 108 occurred. Unable to open installer tome2.mpqe.

  • Check the workaround suggested below #4.

Unable to connect to the service or the connection was interrupted

  • This issue should be fixed after the update Blizzard pushed.

Error 3005

  • If many players are attempting to log-in for same location, you may get this error. Fix is to login one at a time or few players log-in at one time; whatever floats your boat.

Error 3006 – The request has timed out

  • Try the suggested workarounds in #19.

Error 3007

  • Blizzard is working to fix this error.

Error 3008

  • You will receive this error when servers are down for maintenance.

Error 3021

  • You will receive this error when servers are down for maintenance.

Error 14009
To resolve this issue, delete the cache folder as explained below:

Windows 7

  • C:\ProgramData\Blizzard Entertainment\Battle.net
  • C:\ProgramData\Blizzard Entertainment\Blizzard Entertainment\Battle.net

Windows XP

  • C:\Documents and Settings\All Users\Application Data\Battle.net
  • C:\Documents and Settings\All Users\Application Data\Blizzard Entertainment\Battle.net

Error 395002 – There was an error loading the hero. Please try again

  • You will most probably receive this error on character selection screen. To fix it, log-out and then log back in.

Error 395003 – There was an error loading the hero. Please try again

  • You will most probably receive this error on character selection screen. To fix it, log-out and then log back in.

You can track of other known errors and issues with This Thread.

1# ATI 1.24 Catalyst Visual Effects Fix
Download and install the latest Catalyst 12.4a driver hotfix if you experience any graphics issues with your ATI card.

2# Can’t Launch Diablo 3?
While you shouldn’t experience any compatibility issues with Diablo 3, running Diablo 3 Tools in Compatibility Mode (XP SP3) may help when all else fails.

3# Diablo 3 “Disc Ejected” on Digital Download
This error occurs when some of the files are missing, restarting the download will fix the problem.

4# Diablo 3 – Error 108
It can be caused by corrupted installation. To fix it, restart the downloader and scan for the missing files, let the downloader start the installer itself.

5# Can’t Start Diablo 3 Setup – Nothing Happens
Executing Diablo 3 exe does nothing? Make sure Windows Service for Secondary Logon is enabled. Diablo 3 requires it to run on the Windows.

To check, open Control Panel > Administrative Tools > Services and scroll down to the Secondary Logon service. Right click it and select properties. Make sure the Startup Type is NOT set to Disabled. Any other setting is ok.

6# Diablo 3 Freezes ‘Hangs’ During Updating Setup Files
Make sure Windows Service for Secondary Logon is enabled.

7# Diablo 3 Crashes – Overlay Programs, Third Party Apps
If you running any of these programs, you are likely to experience random crashes:

  • Mumble
  • XFire
  • EVGA Precision
  • Airfoil by Rogue Amoeba
  • MSI Afterburner
  • Dxtory
  • RadeonPro
  • Taksi

Update these programs or close them before launching the game.

8# How To Remove Beta Files
Use Uninstall function of Windows to remove the beta files and after that delete the ‘Diablo 3 Beta’ folder completely.

9# Tome Error
If you receive this error while installation, there is probably something wrong with the installation files. Restart Diablo 3 downloader and let it finish; it should start installer itself.

10# Unexpected Decryption Error
This means installation files are corrupted. Re-download the game and let the launcher install it.

11# Diablo 3 Error 3003
If you can’t get the game to switch to your location automatically when you log in, just manually enter your location.

12# Diablo 3 Error 3004
Restart the game.

13# Diablo 3 Error 37
It happens when there are too many players trying to log-in; more players than Blizzard servers can handle at time. Wait for a while and try again, it should be fixed. Exit Diablo III before changing Parental Controls to fix this error.

14# Error 12
If you attempt to log into another region outside of your home region, you will receive an Error 12 message. This is intended. If you are receiving it while attempting to log-in to your home region, wait as Blizzard tries to fix it.

15# Error 108
Similar to “An unexpected decryption error occurred”, the error 108 can be caused by corrupted installation files.

Do not close the downloader early, let it finish and start installer itself. To fix this issue, run the downloader again and point it to the same saved location so that it may scan and download the missing files.

16# Error 33 and 34200
You will receive this error when the service is undergoing maintenance, so try again later.

17# Error 37
Server is at full capacity. Launch days are going to be hectic for Diablo fans; only solution to this error is ‘try again later’.

18# Error 24000
You may run into this error while attempting to run the game after logging in. Blizzard is working to resolve it as quickly as possible. There is no ETA.

19# Error 3004, 3006, 3007, or 300008
Try these suggestions to resolve these error codes:

  • Check the server status and make sure it is up.
  • Restart the Modem.
  • Forward these ports UDP/TCP: 80, 1119, and 6881 – 6999.
  • Update your Windows.
  • Close any conflicting background applications.

20# Error 315300
If you have typed correct account info, make sure there are no additional spaces that were added before or after your email address. If you still run into this error, make sure your foreign language appdata files aren’t corrupted. Or try resetting your password.

If you’re still running into this issue, there may be an error in your foreign language appdata files. Some players have found a workaround, but please be aware the steps they provide are not something we can currently support.

To resolve this issue, create a new admin account on your Windows and use that to log-in to Diablo 3. It should work.

21# Unable to Initalize Streaming
Disable anti-virus or other security programs on your computer and try again.

22# Agent.exe Updating System Files
If all else fails, you can try deleting all agent files and disable your firewall.

23# Computer Randomly Shuts Down?
Re-install the game and drivers.

24# Error 395000
Happens when servers are down for maintenance.

25# Agent.exe Crashes – How To Fix
Any issue with Agent helper program may prevent Diablo 3 from installing or updating properly. Your installation may hang or you may receive agent specific errors. In those case, try the following steps:

Windows

  • 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.
  • If that does not resolve the issue, delete the C:\ProgramData\Battle.net folder and try the installation again. The launcher will automatically rebuild this folder.

If you cannot locate this folder, try these steps:

  • Click Start
  • Click Control Panel
  • If you are in Classic View:
  • Select Folder Options
  • Click the View tab
  • In Advanced Settings under Hidden files and folders, select Show hidden files, folders, and drives.
  • Click OK.
  • If you are in Category View:
  • Select Appearance and Personalization
  • In the Folder Options section, select Show hidden files and folders. This will bring up the Folder Options window.
  • Click on the View tab.
  • In the Advanced Settings section under Hidden files and folders, select Show hidden files, folders, and drives.
  • Click OK.
  • Try again to navigate to the proper folder:
  • Windows Vista/7: C:\ProgramData\Battle.net
  • Windows XP: Documents and Settings\All Users\Application Data
  • Delete the folder, then reattempt the installation.

Mac

  • Stop the installation process if it’s still running.
  • Wait at least one minute. Ensure that Agent no longer appears in your Activity Monitor. For information on how to access your Activity Monitor, see our Background Applications support article.
  • Restart the installation.
  • If that does not resolve the issue, delete the /Users/Shared/Battle.net folder and try the installation again. The launcher will automatically rebuild this folder.

26# Error: BLZPTS00002
If you receive this error, retrieve ‘diablo3_enus’ file from C:\ProgramData\Battle.net\Setup and paste it to another location. Now run this setup file as admin and it should check for updates and fix any issues you are experiencing.

Alternatively, Go to ‘%programdata%\battle.net’ and remove the battle.net from your system. Once you removed the file and folder, download the setup file and put it in ‘%programdata%\battle.net’. After that, kill the agent process using task manager and run Diablo 3 Setup.

27# Display Drivers Have Stopped Responding
Update your graphics card drivers and operating system.

28# Blackscreen with Sound in the Background
At login screen, in the options menu, lower the resolution and try again. Or you can try setting the game to use windowed mode instead of full screen.

You can do this by editing the My Documents\Diablo III\D3Prefs.txt file. Change this line: DisplayModeWindowMode “0” to DisplayModeWindowMode “1”. See if that lets it load without blanking the screen.

29# Installer Stuck at 0%
Try the workaround listed in Diablo 3 Setup.exe erorr – Nothing Happens #5.

30# Failed To Run Required Program
Start with deleting the C:\ProgramData\Battle.net folder and restarting the installer. That will force it to reacquire the setup files which may be all it needs.

31# Diablo 3 Has Stopped Working
Make sure your installation files aren’t corrupted. Follow the instructions in #30 and see if that helps.

32# How To Run Diablo 3 On Un-supported Graphics Cards
Follow the instructions here.

33# Error: File “C:\Program Files (x86)\Diablo III\Updates\d3-0-9558-Win-final.MPQ” Corrupt
You can skip Step 1-3, delete the file and run the launcher. If that doesn’t help, start from Step 1.

  1. Uninstall Diablo 3 (via Add/Remove Programs)
  2. Download game client setup from Battle.net account area
  3. Run setup (It failed with same error again…)
  4. Delete the MPQ file
  5. Run C:\Program Files (x86)\Diablo III\Diablo III Launcher.exe (as admin)

34# Requires a New Operating System?
This error occurs when launcher, agent and setup applications are running on different compatibility modes. Sync them and try again!

35# Updating Blizzard Launcher Freezes at 0%
Kill the agent.exe process and try again.

36# Diablo 3 Slow Download
Go to Control panel> Internet options> Connections> LAN settings and uncheck the “Automatically detect settings” box to resolve the issue.

Stay updated with other bugs and known issues in the game by following This Thread. If you come across any other issues, let us know in the comments below and we will try to help you out.