Javascript Programming

How to Fix net::ERR_HTTP2_PROTOCOL_ERROR in Chrome

April 7, 2023420 views0

If you are using Google Chrome as your web browser, you may encounter an error message that says “net::ERR_HTTP2_PROTOCOL_ERROR“. This error prevents you from accessing some websites that use the HTTP/2 protocol, which is a newer and faster version of the HTTP protocol that powers the web.

In this blog post, we will explain what causes this error, how to troubleshoot it, and how to fix it. We will also provide some tips on how to prevent it from happening again.

## What Causes net::ERR_HTTP2_PROTOCOL_ERROR?

The net::ERR_HTTP2_PROTOCOL_ERROR occurs when there is a problem with the communication between your browser and the website that uses the HTTP/2 protocol. This can happen for various reasons, such as:

– The website’s server is using an outdated or incompatible version of the HTTP/2 protocol that does not work well with your browser.
– The website’s server is overloaded or experiencing technical issues that affect its performance or availability.
– Your browser is outdated or has a bug that prevents it from supporting the HTTP/2 protocol properly.
– Your browser’s cache or cookies are corrupted or contain invalid data that interfere with the HTTP/2 protocol.
– Your network connection is unstable or slow, which causes timeouts or interruptions in the HTTP/2 protocol.
– Your firewall, antivirus, VPN, proxy, or other third-party software is blocking or interfering with the HTTP/2 protocol.

## How to Troubleshoot net::ERR_HTTP2_PROTOCOL_ERROR?

Before you try to fix the net::ERR_HTTP2_PROTOCOL_ERROR, you should first try to troubleshoot it and identify the source of the problem. Here are some steps you can take to do that:

– Check if the website is down or having issues. You can use online tools like [Down For Everyone Or Just Me](https://downforeveryoneorjustme.com/) or [Is It Down Right Now](https://www.isitdownrightnow.com/) to see if the website is reachable from other locations. If the website is down for everyone, then the problem is not on your end and you just have to wait until the website’s server is fixed.
– Check if other websites that use the HTTP/2 protocol work fine. You can use online tools like [HTTP/2 Test](https://tools.keycdn.com/http2-test) or [HTTP/2 Indicator](https://chrome.google.com/webstore/detail/http2-indicator/mpbpobfflnpcgagjijhmgnchggcjblin) to see if a website supports the HTTP/2 protocol. If other websites that use the HTTP/2 protocol work fine, then the problem is specific to the website that gives you the error and you may need to contact its owner or administrator for help.
– Check if other browsers that support the HTTP/2 protocol work fine. You can use online tools like [Can I Use](https://caniuse.com/http2) or [HTTP/2 Browser Support](https://http2.akamai.com/demo) to see if your browser supports the HTTP/2 protocol. If other browsers that support the HTTP/2 protocol work fine, then the problem is specific to your browser and you may need to update it or fix it.
– Check if your network connection is stable and fast. You can use online tools like [Speedtest](https://www.speedtest.net/) or [Fast](https://fast.com/) to see your network speed and latency. If your network connection is unstable or slow, then you may need to improve it by restarting your router, modem, or device, moving closer to your Wi-Fi source, switching to a wired connection, or contacting your internet service provider for help.

## How to Fix net::ERR_HTTP2_PROTOCOL_ERROR in Chrome?

If you have tried all the troubleshooting steps above and still get the net::ERR_HTTP2_PROTOCOL_ERROR in Chrome, then you can try some of these solutions to fix it:

– Clear your browser’s cache and cookies. This will remove any corrupted or invalid data that may interfere with the HTTP/2 protocol. To do this, go to Chrome’s settings > Privacy and security > Clear browsing data > Advanced > Time range: All time > Check Cached images and files and Cookies and other site data > Clear data.
– Disable your browser’s extensions. Some extensions may block or interfere with the HTTP/2 protocol. To do this, go to Chrome’s settings > Extensions > Toggle off