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How to Solve Oops! Firefox Could not Find HTTP

For the past few days, I was getting the error message Oops! Firefox could not find HTTP whenever I tried to open a link in new tab. Instead of showing the webpage, Firefox start showing a Google page with the alert "Oops! Firefox could not find HTTP". Only after refreshing the page multiple times, I could access the webpage. At first, I thought it was the issue with the web address but later I realized the truth. I was getting the same error with many websites and those websites work fine with other web browsers like Internet Explorer, Chrome etc. I read some interesting discussions about this issue on popular discussion forums and they have listed some common reasons for getting this message instead of opening the destination website after clicked a link.

Reasons for Oops! Firefox could not find HTTP

Some of the reasons I found from various discussion forums and portals are:
  • Lower Memory and high number of Tabs opened

  • Malicious Program ( I read it as Google Virus )

  • Maybe DNS(Domain Name System) resolving issues

  • Security Programs stop Firefox from accessing website details

As I noticed, I was getting this error message mostly when multiple tabs were opened. It is because if we try to open a new tab, it may prevent Mozilla browser from loading the details of the new webpage due to low memory. So Firefox shows this error message instead of displaying the link. Another possibility I read is the presence of some malicious programs which affect browsers installed on the PC. Malicious programs stop Firefox from displaying websites and redirect to Google Search with this message.

If the firewall installed on a PC blocks Firefox from accessing website details, it can cause this issue. Last possible reason is DNS failure. If your computer failed to resolve the Domain Name System queries, Firefox can't find the web page. So Domain Name System issue is also a possible reason.


We can solve this issue without much difficulty. Possible steps to fix this issue are:

  1. Close unwanted tabs

  2. Make sure Firefox is whitelisted in Firewall settings

  3. Assign Open DNS or Google DNS

    To get more details about assigning Open DNS in your computer follow the links below.

  4. It is better to perform a virus scan

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Alex George
Alex George has Engineering graduation in Computer Science and an MBA in Finance. He had been working as a senior Network Engineer for ten years. His specialization is in Cisco products. Traveling is one of his hobbies and visited various places as part of his onsite work. He visited different places as part of his onsite work like New York, Dubai, London, etc. Right now Alex is a director of one of the leading career development firms in India, which trains students for UPSC, SSC, and PSC examinations. He guides a lot of students to get selection for various prestigious institutions like CBI, Income Tax Department, etc. Alex George is a stock market investor and a very active intraday trader. Engineering Background: He has a B.Tech in Computer Science and Engineering and passed different network and security courses like CCNA, CCNP (Security), CEH, and various Microsoft certifications. Finance Background: Alex has an MBA in Finance. He is an active intraday trader and a Share Market Investor. Webmaster Skills: Alex is a blogger since 2004. He has a working knowledge of HTML, CSS, PHP, and JavaScrip.