HomeFixesFix ERR_HTTP2_Inadequate_Transport_Security Chrome Browser Error

Fix ERR_HTTP2_Inadequate_Transport_Security Chrome Browser Error



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A lot of users make Google Chrome their default browser. It is one of the most reliable and secure web browsers that you can use online. However, there are instances when you experience privacy and security protocol compatibility issues on Google Chrome. One example is the ERR_HTTP2_Inadequate_Transport_Security error.

Encountering the ERR_HTTP2_INADEQUATE_TRANSPORT_SECURITY problem will give you the error message,

“This site can’t be reached. The webpage might be temporarily down or it may have moved permanently to a new web address. ERR_HTTP2_Inadequate_Transport_Security”


If you happen to see the ERR_HTTP2_Inadequate_Transport_Security error on your Chrome browser, you can fix the issue with several troubleshooting tips below. The solutions also work with other Chromium-based browsers such as Microsoft Edge, Brave, and Opera on Windows 10 PC or Mac computer.

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How to Troubleshoot & Fix ERR_HTTP2_INADEQUATE_TRANSPORT_SECURITY Browser Security Error on Google Chrome

There are different possible reasons why the ERR_HTTP2_Inadequate_Transport_Security appears on your Google Chrome browser. Your browser may be outdated or it has cookies stored on your device that cause the problem. To troubleshoot and fix these issues, follow the solutions below one at a time.

Solution #1 – Clear your Google Chrome Browser’s Cache and Cookies Data

  • On your Google Chrome browser, click the More button or the three-dotted icon.
  • Select More tools. 
  • Go to Clear browsing data.
  • Set the Time Range to All time.
  • Check the boxes next to Cookies and other site data and Cached images and files.
  • Click Clear Data.

Solution #2 – Edit the Launch Parameters on your Google Chrome Browser Settings

  • Look for the Chrome browser icon and right-click on it.
  • Select Properties.
  • Go to the Shortcut tab.
  • Navigate to the Target option. 
  • On the entry, add “–use-spdy=off” at the end. 
  • Click Apply.
  • Click OK.

You may also try adding “–disable-http2” at the end of the Target entry.

Solution #3 – Use Private Browsing or Incognito Mode on Chrome

Credit: Windows Dispatch
  • Click the three-dotted icon on your Google Chrome browser.
  • Choose New incognito tab.
  • Now, try to launch the website.

Solution #4 – Update your Google Chrome Browser

  • On your Chrome browser, click the three-dotted icon.
  • Click Help.
  • Select About Chrome.
  • Install available updates on Google Chrome. 
  • Relaunch your Chrome browser.

Which of the methods above helped you fix the Google Chrome security error? You can let us know by writing to us in the comment section below.

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