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[GH-ISSUE #1592] Certificate error when opening any website in any browser. #1585

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opened 2026-03-03 19:52:39 +03:00 by kerem · 4 comments
kerem commented 2026-03-03 19:52:39 +03:00
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Originally created by @kshnkvn on GitHub (Apr 6, 2023).
Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1592

Description

I try use Windows version, but when I try go to any website with any browser, I get certificate error.
I tried to install certificate both in automatic mode and manual mode, certificate is in Windows certificate center.

Steps to Reproduce

  1. Start Proxyman
  2. Start any browser
  3. Go to any website
  4. See certificate error. Example error from Firefox:
    Screenshot 2023-04-06 163209
    Screenshot 2023-04-06 163403

Also in Firefox, I installed certificate following instructions in documentation. It did not work.

Current Behavior

Certificate error when opening any website in any browser.

Expected Behavior

Website should open correctly.

Environment

  • App version: e.g Proxyman 1.5.0
  • Windows 11
Originally created by @kshnkvn on GitHub (Apr 6, 2023). Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1592 ## Description I try use Windows version, but when I try go to any website with any browser, I get certificate error. I tried to install certificate both in automatic mode and manual mode, certificate is in Windows certificate center. ## Steps to Reproduce <!-- Add relevant code and/or a live example --> 1. Start Proxyman 2. Start any browser 3. Go to any website 4. See certificate error. Example error from Firefox: ![Screenshot 2023-04-06 163209](https://user-images.githubusercontent.com/52835030/230394145-c45c1b0e-1ee2-470c-8135-50b1487251c6.png) ![Screenshot 2023-04-06 163403](https://user-images.githubusercontent.com/52835030/230394139-654fe826-3d75-4bcb-a529-60822acceee3.png) Also in Firefox, I installed certificate following instructions in documentation. It did not work. ## Current Behavior Certificate error when opening any website in any browser. ## Expected Behavior Website should open correctly. ## Environment - App version: e.g Proxyman 1.5.0 - Windows 11
kerem commented 2026-03-03 19:52:40 +03:00
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@kics223w1 commented on GitHub (Apr 6, 2023):

  • I've tested the certificate on multiple browsers and it seems to be working fine on Google Chrome and Microsoft Edge.
  • However, I noticed that it's not working on Firefox at the moment.
  • To resolve this issue, I suggest resetting the certificate or performing a Factory Reset in the Help -> Advance menu and then installing the certificate again.
  • I'm confident this should resolve the issue on all other browsers, except for Firefox. I'll start investigating the bug on Firefox.
<!-- gh-comment-id:1499175098 --> @kics223w1 commented on GitHub (Apr 6, 2023): - I've tested the certificate on multiple browsers and it seems to be working fine on Google Chrome and Microsoft Edge. - However, I noticed that it's not working on Firefox at the moment. - To resolve this issue, I suggest resetting the certificate or performing a **Factory Reset** in the **Help -> Advance menu** and then installing the certificate again. - I'm confident this should resolve the issue on all other browsers, except for Firefox. I'll start investigating the bug on Firefox.
kerem commented 2026-03-03 19:52:40 +03:00
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@kshnkvn commented on GitHub (Apr 6, 2023):

@kics223w1 ty, seems it work. But as you say in firefox still don't work.

<!-- gh-comment-id:1499217899 --> @kshnkvn commented on GitHub (Apr 6, 2023): @kics223w1 ty, seems it work. But as you say in firefox still don't work.
kerem commented 2026-03-03 19:52:40 +03:00
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@NghiaTranUIT commented on GitHub (Apr 7, 2023):

Hey @kshnkvn To intercept HTTPS traffic from Firefox, you have to install the certificate to Firefox Trust Store too. Let's check out this doc: https://docs.proxyman.io/debug-devices/firefox

Firefox doesn't use respect the system config, so we have to manually add & trust the certificate 👍

To export the certificate on Windows, just simply open the Certificate menu -> Export

<!-- gh-comment-id:1499843792 --> @NghiaTranUIT commented on GitHub (Apr 7, 2023): Hey @kshnkvn To intercept HTTPS traffic from Firefox, you have to install the certificate to Firefox Trust Store too. Let's check out this doc: https://docs.proxyman.io/debug-devices/firefox Firefox doesn't use respect the system config, so we have to manually add & trust the certificate 👍 ----------- To export the certificate on Windows, just simply open the Certificate menu -> Export
kerem commented 2026-03-03 19:52:40 +03:00
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@kshnkvn commented on GitHub (Apr 7, 2023):

@NghiaTranUIT i did that, but it still doesn't work.

<!-- gh-comment-id:1500221664 --> @kshnkvn commented on GitHub (Apr 7, 2023): @NghiaTranUIT i did that, but it still doesn't work.
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