How do I fix Diablo III code 63?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The diablo 3 code 63 error is a bug that occurs when the game is unable to connect to the server. This can happen for a number of reasons, such as the server being down or the game files being corrupt.

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1. Update your graphics driver

  1. Go to the Nvidia website and download the latest driver for your specific graphics card.
  2. Install the driver.
  3. If you are using Windows 7 or 8, open the Control Panel and click on the Device Manager.
  4. In the Device Manager, under Display adapters, right-click on the graphics card that you are using and select Update Driver.
  5. Browse to the location of the driver that you downloaded and select the file.
  6. Click Next and let the driver install.
  7. After the driver has installed, restart your computer.
  8. If you are using Windows 10, open the Settings app and click on System.
  9. Under Display, click on Advanced settings.
  10. In the Display settings window, click on the Driver tab.
  11. In the Driver category, click on Update Driver.
  12. In the Driver Update Wizard, select the latest driver from the list and click Next.
  13. Follow the on-screen instructions to finish the update.
  14. If you are still experiencing code 63 problems, please try reinstalling the graphics driver.

2. Update your Windows

  1. Open Windows Update by clicking on the Start button, typing “windows update”, and pressing Enter.
  2. Click on the “Update and Security” heading.
  3. On the left hand side, click on “See all updates”.
  4. On the right hand side, under “Available updates”, click on “Install updates”.
  5. Click on the “Install updates” button.
  6. Click on the “Browse my computer for updates” button.
  7. Double-click on the “diablo III” entry.
  8. Click on the “Check for updates” button.
  9. If there are any updates available, click on the “Update” button.
  10. Click on the “Finish” button.
  11. Restart your computer.

3. Update your Diablo 3

  1. Click the "Battle.net" button in the top left corner
  2. On the "Battle.net" page, click "Account" in the top right corner
  3. On the "Account" page, click "Profile" in the top left corner
  4. On the "Profile" page, click the "Battle.net" tab
  5. On the "Battle.net" tab, click "Update Profile"
  6. On the "Update Profile" page, click "Diablo III" in the top right corner
  7. On the "Diablo III" page, click "Diablo III: Main" in the top left corner
  8. On the "Diablo III: Main" page, click "Check for Update" in the top right corner
  9. If an update is available, it will be downloaded and installed
  10. When the update is complete, click "Finish" in the top right corner

4. Re-install your Diablo 3

  1. Quit Diablo 3 if you are currently playing it.
  2. Go to your Diablo 3 installation directory. By default this is C:\Program Files (x86)\Diablo III\
  3. Change into the Diablo III installation directory.
  4. Run the Diablo III installer. This can be found at C:\Program Files (x86)\Diablo III\Diablo III.exe
  5. Follow the on-screen instructions.
  6. When the Diablo III installation is complete, you will be asked to restart your computer. Do so.
  7. When your computer has restarted, launch Diablo III. You will be prompted to enter your login information. Do so.
  8. Once you have logged in, you will be prompted to choose a character. Do so.
  9. When you have chosen a character, the game will start.

5. Delete the Diablo 3 folder in your "Documents" folder

  1. Locate the "Documents" folder in your computer.
  2. Inside the "Documents" folder, find the "Diablo III" folder.
  3. Right-click on the "Diablo III" folder and select "Delete."
  4. Confirm the deletion by clicking on "Yes" in the dialog box that appears.

Some users might also have success with the following opitons:

  1. Run Diablo 3 as an administrator
  2. Add Diablo 3 to your Windows Firewall exceptions list