Google Chrome has become a daily need in all human lives. It seems to be an organ of the human body. Grabbing knowledge in this fast life is just not tough these days. All thanks to Google Chrome! But what if the Chrome shows ERR_SPDY_PROTOCOL_ERROR Error?

The error that is very specific and just stops the functioning of Chrome as well as the activities associated with it? So this article is to help you fix ERR_SPDY_PROTOCOL_ERROR that is, the error which we often come across in Chrome, “This web page is not available.”


To start with, let us first understand what this problem actually is and why it arises. The browser, which is the most common and majorly used, is none other than Google Chrome. Browsing the internet should be a seamless experience.

However, every so often, users may come across errors that disrupt this experience. One such error, especially for Google Chrome users, is the ERR_SPDY_PROTOCOL_ERROR. In this guide, we’ll delve deep into understanding this error, its causes, and the solutions to fix it.

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The ERR_SPDY_PROTOCOL_ERROR is a browser-specific error encountered by Google Chrome users. It indicates that Chrome wasn’t able to open a particular website because of an issue with the SPDY protocol.

SPDY (pronounced “speedy”) is a deprecated open-specification networking protocol that was developed primarily at Google to transport web content faster and more securely.

What Causes ERR_SPDY_PROTOCOL_ERROR on Google Chrome?

  1. Deprecated SPDY Protocol: The primary cause is the outdated SPDY protocol, which was used to speed up the loading of web pages. Google Chrome no longer supports the SPDY protocol since HTTP/2 has replaced it. Websites still using SPDY can trigger this error.
  2. Antivirus or Firewall: Sometimes, security software can interfere with your web browsing, causing errors like ERR_SPDY_PROTOCOL_ERROR.
  3. Older Version of Chrome: Using an outdated version of Chrome can cause compatibility issues, leading to this error.
  4. Browser Cookies and Cache: Corrupted cookies or cached data can sometimes result in this error.

How to Fix ERR_SPDY_PROTOCOL_ERROR in Google Chrome

Most of the chrome users have come across this problem at least once in their lifetime. It arises for ensuring safety as well as the loading speed of the site. So let’s learn how to fix this annoying error.

Basically, there are a total of 3 popular methods which help one to solve this problem.

Solution 1Flushing the Sockets

The first step to opt for is to open Google Chrome and type the URL chrome://net-internals/#sockets in the Address bar and click on the Enter key of your keyboard. After this, there will be a red bar on top on which a downward arrow will be displayed.

Go to the downward arrow and click on ‘flush sockets.’ With this, the chrome will flush the sockets, and you will be able to visit the site which you wanted to. After following the mentioned steps, close the bar and restart the Chrome.

This was all about the first method, and you will be able to open your site. If you’re not able to fix ERR_SPDY_PROTOCOL_ERROR with this method, then here is the second method for you.

Solution 2 ⇒ Flushing DNS and Renewing IP

For flushing the DNS, press Window + R on your keyboard. This step is followed by typing CMD. After this, type ipconfig /flushdns. By doing this, all the DNS will be flushed. Now for renewing IP, command prompt has to be opened. Then type ipconfig /release and hit the enter button.

Retype ipconfig /renew and click the enter button. After performing the mentioned steps, restart your computer and open Google Chrome browser. This is the second method which helps you to fix the ERR_SPDY_PROTOCOL_ERROR problem.

While most of the people you come across ask you to reload the site in case you face this problem. But this is the prelim response, and just by doing this, you get fruitful result. While, if reloading proves to be futile, then it is advised to shut down the chrome and start it again.

This has to accompanied by the clearing of Cache. For clearing Cache, there are two methods available depending upon the device on which it is being operated.

Solution 3 ⇒ Clearing of Cache on computer

Step 1 ⇒ Restart your Google Chrome.

Step 2 ⇒ Click on the more option displayed in the toolbar.

Step 3 ⇒ Locate more tools and tap on Clear Browsing Data. Now a variety of options would appear out of which you’ve to look for Cookies and Cached Images and Files.

Step 4 ⇒ After this, you will get an option to delete the data which, according to you, is not necessary. For deleting, you’ve to go to history and look for the time. In case all the data have to be deleted, then hit ‘the beginning of time’ option.

Step 5 ⇒ Now click on Clear Browsing Data.

With this, you would be able to clear the cache when you’re operating on the computer.

On iOS

Step 1 ⇒ Restart your Chrome.

Step 2 ⇒ Find the icon more in the toolbar.

Step 3 ⇒ Click on History, and you would be able to see other options on your screen.

Step 4 ⇒ Click on clear Browsing Data, followed by checking for cookies and cached images and

Step 5 ⇒ Further, the decision has to be made regarding what all data one wants to delete, and according to that, one has to select the time as well. If the entire data has to vanish, then tap on the beginning of time.

Step 6 ⇒ Ultimately, click on Clear Browsing Data.

So with this, it is observed that the steps are almost the same for both the computer and iOS. The next question which arises is what if the Chrome is operated on an Android mobile device? The answer is that you have to follow the same steps of iOS.

Now, if you are the unlucky one who has tried every method mentioned above, but still not able to fight with this problem, then here is the way to stop this problem from becoming an obstacle in your path.

If any antivirus is installed in your device, then it is suggested to check if this resistance is caused by your anti-virus or not. Open your antivirus and look if your web page is included in it or not. If the anti-virus includes the web page, then it is to be directed to stop blocking the same page.

And lastly, clearing out all the cookies is the option. For this, open Chrome and type chrome://settings. Look for show advanced setting option and tap on it.

Click on clear browsing data which will be displayed under the privacy section. From the variety of options, click on cookies and other site plugins data and cache data. And eventually, clear browsing data which will delete all the cookies.

Show with all these methods available; you will surely be able to fight against this annoying problem, which often becomes an obstacle while searching.


1. Update Google Chrome:

Ensure you’re using the latest version of Google Chrome, as updates typically come with bug fixes.

  • Open Google Chrome.
  • Click on the three vertical dots in the top right corner.
  • Go to Help > About Google Chrome.
  • Chrome will automatically check for updates.

2. Clear Cookies and Cache:

Corrupted cookies or cache can cause various errors, including the SPDY protocol error.

  • Open Google Chrome.
  • Click on the three vertical dots > More tools > Clear browsing data.
  • Select Cookies and other site data and Cached images and files.
  • Click on the Clear data button.

3. Flush the Socket Pools:

This method is more technical but can resolve the error in many instances.

  • In Chrome’s address bar, type chrome://net-internals/#sockets.
  • Click on the Flush socket pools button.

4. Disable SPDY in Chrome:

  • Open Google Chrome and type chrome://flags/#enable-quic in the address bar.
  • You will see “Experimental QUIC protocol.” Set it to Disabled.
  • Restart Google Chrome.

5. Check Antivirus and Firewall:

Ensure that your security software isn’t blocking specific web pages. You might need to whitelist certain websites or temporarily disable the software to check if it’s causing the error.

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Errors like ERR_SPDY_PROTOCOL_ERROR can be disruptive, but understanding their causes makes troubleshooting easier. With the steps mentioned above, users can navigate and resolve such issues, ensuring a smooth browsing experience.

Always ensure your browser is updated, and consider reaching out to website administrators if you believe the problem lies with a particular site still using outdated protocols.

Hope this article helps you to fix ERR_SPDY_PROTOCOL_ERROR problem. Thank you for reading.