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How to Fix HBO Max Error Code 420?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

HBO Max error code 420 is an error that can occur when trying to watch HBO Max content on a device that is not compatible with the service. This error code means that the device you are using is not able to connect to the HBO Max servers. There are a few different reasons why this error code might occur, but the most common reason is that the device you are using is not compatible with HBO Max. There are a few ways to fix this error code, but the most common fix is to try using a different device.

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1. Check your internet connection

  1. Open your internet browser and type in "http://diagnostics.hbo.com"
  2. Click on the "Check Status" link.
  3. If your internet connection is working properly, you will see a message that reads "Your connection is working." If you are experiencing an issue, you will see a message that reads "Your connection is not working."
  4. If you are experiencing an issue, you will need to troubleshoot the issue by following the instructions that are provided.

2. Restart your device

  1. First, press and hold the Power button for a few seconds until the device restarts.
  2. After the device restarts, try to connect to the HBO Max service.
  3. If you are still experiencing the hbo max error code 420, please try the following solutions: 3a. If you are using a wired connection, try reconnecting your device to the router and then to the HBO Max service. 3b. If you are using a wireless connection, try connecting your device to the router and then to the HBO Max service. 3c. If you are using a VPN, try disconnecting your device from the VPN and then reconnecting it to the HBO Max service. If you are still experiencing the hbo max error code 420, please contact customer service.

3. Clear your browser's cache and cookies

  1. In your browser, open the "Settings" menu.
  2. Click on "Advanced."
  3. Under "Privacy," click on "History."
  4. Under "History Settings," click on "Clear Now."
  5. Click on "OK."
  6. Restart your browser.
  7. Clear your cache and cookies.

Still not working? maybe try one of these options:

  1. Try a different browser
  2. disable any ad blockers or privacy extensions you have installed
  3. Update to the latest version of your browser
  4. Contact HBO Max customer support