Thursday, May 17, 2012

Diablo 3 Error 37

Error 37 is not uncommon for Diablo 3 PC users. Unless the true cause has been found for it there is no chance to get rid of it. If you are encountering this error don’t worry as you’re not far away to learn how to fix it on your own.
  • Restore Default Graphics Settings
  • Allow Diablo 3 through Windows Firewall
  • Remove Obsolete Registry Entries
  • Disable Support for DXT Texture Format
  • Start Secondary Log-On Service with OS Startup
  • Turn Off Antivirus Program

Restore Default Graphics Settings

Set up the default graphics settings from game options. It might solve Diablo 3 error 37.

Allow Diablo 3 through Windows Firewall

Error 37 occurs if Windows Firewall is blocking it.. Assuming that you are only using Windows Firewall and no other firewall software, we have given steps to add it to the exceptional items so that your issue will resolve.


  1. Click Start, select Control Panel | System and Security.
  2. Under Windows Firewall category, click the link Allow a program through Windows Firewall.
  3. Your screen may come with many programs which are excluded from the firewall protection. Similarly you have to exclude Diablo too.
  4. Click Allow Another Program button.
  5. Click Browse, navigate to C:\Program Files\Diablo III directory.
  6. Add all Executable Files (.exe) to the list and then click OK | Close.


Remove Obsolete Registry Entries

Registry issues are the most common reason behind Diablo 3 error code 37. Scan your Windows registry with a good registry cleaner such as PCFresher and if errors are found fix them instantly.

Disable Support for DXT Textual Format

From the Catalyst Control Panel stop supporting the DXT Textual Format in order. Perform these steps:
  1. Right click your desktop, select Properties.
  2. Select Catalyst Control Panel option.
  3. In the new dialog click Graphics Settings tab.
  4. Click 3D and then More Settings link.
  5. Deselect the checkbox namely Support DXT Texture Formats and then click Apply to save it.
Start Secondary Log-On Service with OS Startup

Apply the settings given below and start Secondary Log-On Service with the machine startup. Here’s how to do that:


  1. Click Start, type Services.msc in the Search box and press ENTER.
  2. Right click Secondary Log-On service and select Properties.
  3. In the General tab there is Startup Type drop down box. Select Automatic value and click Apply | OK.
  4. When you’re done simply close the window and restart your machine.

Turn Off Antivirus Program

Antivirus programs sometime prevent your games from running smoothly. Diablo error 37 can occur due to the same reason. Turn your antivirus off as below:

Right click its system tray icon and select Disable | Disable Until System Reboot option.


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