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。

Unable to send request at the startup

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

more options

Firefox is unable to send the request at the startup, meaning it's just keep showing loading... and then opens the webpage after a couple of minutes. For example, if I open instagram.com: At the bottom it says, "sending request to www.instagram.com" and it stucks on that for some time as I'm not able to click anywhere in the webpage. And sometimes, it says, "transferring data from www.instagram.com" PC and the internet connection is fine. What could be the issue?

Firefox is unable to send the request at the startup, meaning it's just keep showing loading... and then opens the webpage after a couple of minutes. For example, if I open instagram.com: At the bottom it says, "sending request to www.instagram.com" and it stucks on that for some time as I'm not able to click anywhere in the webpage. And sometimes, it says, "transferring data from www.instagram.com" PC and the internet connection is fine. What could be the issue?

すべての返信 (3)

more options

Go to menu -> Settings -> Privacy & Security and scroll down to Cookies and site data.

Do you see Calculating site data and cache size… before connecting to instagram?

more options

Yes, I can see "Calculating site data and cache size" for like 20 seconds. Although I had deleted this a month ago. But it didn't fix the issue. Like I was saying above. Either the webpage stucks on sending the request or transferring data or performing a TLS handshake or read.

more options

Is this with all websites/pages, some, a few?

Start Firefox using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?


Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}


Type about:preferences#advanced<Enter> in the address box.

Under Advanced, Select Network.

[56+] Type about:preferences#general<enter> in the address box. Look for Network. +++++++++++++++++++++ Look for Configure How Firefox Connects and press the Settings button. If you are using a proxy, make sure those settings are correct. If there is no proxy, first try No Proxy. If there is a problem, then try System Proxy.