This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Thread ini telah diarkib. Sila tanya soalan baru jika anda perlu bantuan.

In Firefox Quantum running on Windows Server 2016, is there any way to clear/flush the DNS cache in the browser?

  • 1 balasan
  • 4 ada masalah ini
  • 8 paparan
  • Balasan terakhir oleh user1929

NeedFFHelp
NeedFFHelp
more options

When switching onto VPN, we have an address that will resolve from an external IP address to an internal IP address (and back when getting off of VPN). The problem is, Firefox appears to hold on to the old DNS to IP resolution for a long period of time. This makes our website inaccessible until the old IP address drops and the browser initiates a new DNS request. Changing the network.dnsCacheExpiration value in about:config to something lower does not solve/improve the issue.

There was a browser add-on named DNS Flusher which used to be available to help with this problem, but now the developer says that in Quantum the API that the add-on relied on is no longer available. PLEASE HELP!

When switching onto VPN, we have an address that will resolve from an external IP address to an internal IP address (and back when getting off of VPN). The problem is, Firefox appears to hold on to the old DNS to IP resolution for a long period of time. This makes our website inaccessible until the old IP address drops and the browser initiates a new DNS request. Changing the network.dnsCacheExpiration value in about:config to something lower does not solve/improve the issue. There was a browser add-on named DNS Flusher which used to be available to help with this problem, but now the developer says that in Quantum the API that the add-on relied on is no longer available. PLEASE HELP!

Penyelesaian terpilih

Does it work if you also set these preferences?

  • network.dnsCacheEntries to 0.
  • network.dnsCacheExpiration to 0.
  • network.dnsCacheExpirationGracePeriod to 0.
Baca jawapan ini dalam konteks 👍 0

All Replies (1)

user1929
user1929
more options

Penyelesaian Terpilih

Does it work if you also set these preferences?

  • network.dnsCacheEntries to 0.
  • network.dnsCacheExpiration to 0.
  • network.dnsCacheExpirationGracePeriod to 0.