Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Avatar for Username

Mozilla サポートの検索

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.

詳しく学ぶ

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

Fetching extension fails under MITM proxy even if certificate is added

  • 3 件の返信
  • 0 人がこの問題に困っています
  • 2 回表示
  • 最後の返信者: GamePlayer

GamePlayer
GamePlayer
more options

Good afternoon,

I've got a problem with add-ons while using Squid MITM Proxy with a custom certificate for Firefox/LibreWolf.

While I'm trying to update / install an extension / theme, it fails with:

``` 1686147276233 addons.xpi WARN Download of https://addons.mozilla.org/firefox/downloads/file/4104397/witchdoctor-2.0.xpi failed: [Exception... "Certificate issuer is not built-in." nsresult: "0x80004004 (NS_ERROR_ABORT)" location: "JS frame :: resource://gre/modules/CertUtils.sys.mjs :: checkCert :: line 177" data: no] Stack trace: checkCert()@resource://gre/modules/CertUtils.sys.mjs:177 onStopRequest()@resource://gre/modules/addons/XPIInstall.jsm:2514 ```

How can I install an add-on while using the MITM proxy?

Good afternoon, I've got a problem with add-ons while using Squid MITM Proxy with a custom certificate for Firefox/LibreWolf. While I'm trying to update / install an extension / theme, it fails with: ``` 1686147276233 addons.xpi WARN Download of https://addons.mozilla.org/firefox/downloads/file/4104397/witchdoctor-2.0.xpi failed: [Exception... "Certificate issuer is not built-in." nsresult: "0x80004004 (NS_ERROR_ABORT)" location: "JS frame :: resource://gre/modules/CertUtils.sys.mjs :: checkCert :: line 177" data: no] Stack trace: checkCert()@resource://gre/modules/CertUtils.sys.mjs:177 onStopRequest()@resource://gre/modules/addons/XPIInstall.jsm:2514 ``` How can I install an add-on while using the MITM proxy?

すべての返信 (3)

Dropa
Dropa
more options

If the certificate is failing you should contact their customer service support about this issues since that extension is from them. Addon install issues should contact their Developer for support on their Addon.

cor-el
cor-el
  • Top 25 Contributor
  • Moderator
more options

You can try to download and save the extension's XPI file and install the extension via the about:addons page via the cogwheel menu.

GamePlayer
GamePlayer 質問者
more options

At the moment there's no way to install extension through MITM?