Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Using Firefox with a VPN yields PR_END_OF_FILE_ERROR

  • 2 replies
  • 0 have this problem
  • 1 view
  • Last reply by Lakshmi

Lakshmi
Lakshmi
more options

Using Windows 11. I'm using a free Proton VPN. My Firefox version is 103.02. I want to be able to continue to use the VPN when using Firefox to check my gmail accounts. If I disconnect the VPN, Firefox lets me access my mail site without a problem. When I use the VPN connected, I'm getting a PR_END_OF_FILE_ERROR 

Is there a way to keep the VPN on and connect with no error? Is there a Firefox setting I can change? I don't have proxy selected in Win 11 connections. Cache is cleared.
Using Windows 11. I'm using a free Proton VPN. My Firefox version is 103.02. I want to be able to continue to use the VPN when using Firefox to check my gmail accounts. If I disconnect the VPN, Firefox lets me access my mail site without a problem. When I use the VPN connected, I'm getting a PR_END_OF_FILE_ERROR Is there a way to keep the VPN on and connect with no error? Is there a Firefox setting I can change? I don't have proxy selected in Win 11 connections. Cache is cleared.

Chosen solution

You can try to disable DNS over HTTPS.

Note that using a proxy or VPN can be a problem as such a connection may not support all protocols and cipher suites that websites support and thus

See also:

Read this answer in context 👍 1

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Chosen Solution

You can try to disable DNS over HTTPS.

Note that using a proxy or VPN can be a problem as such a connection may not support all protocols and cipher suites that websites support and thus

See also:

Lakshmi
Lakshmi Question owner
more options

Disabling Firefox DNS over HTTPS allowed me to connect without error, while using Proton VPN. Thanks!