There exist various errors which prevent you from surfing the internet smoothly. Errors appear for multiple reasons, including wrong settings, bugs, server problems, browser settings, etc. Although Google Chrome is an example of the most efficient and popular web browser operated by users across the globe, it also displays several errors while surfing the web that might prevent you from accessing the website of your choice. One common error preventing you from exploring a web page is “ERR_SPDY_PROTOCOL_ERROR”.error

This error may restrict you from glancing at some of the most eminent and well-coded websites like Google and Facebook, thus, becoming an obstacle in your workflow. ERR_SPDY_PROTOCOL_ERROR is a browser-specific error that the users of Google Chrome experience. This error has become a common problem for numerous Chrome users. Due to this error, the message “The webpage is not available” appears on the screen when you try to access a specific web page.

In this article, we will assist you in fixing this issue. However, before applying various techniques to solve the issue, you must be aware of the error and the reasons behind its rise. You might also want to learn the Top 10 Free Internet Blockers to Boost Your Productivity.

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The error depicts the presence of some network security issues. SPDY is an open-specification networking protocol designed by Google to improve web pages’ security and load the pages faster. It employed the technique of manipulating the HTTP traffic to reduce the web page load time.ERR_SPDY_PROTOCOL_ERROR

However, with the development of HTTP/2, SPDY became vulnerable to threats and faced severe security issues. Therefore, Google discontinued using SPDY in the updated versions of Google Chrome.

Reasons behind the rise: Outdated version of Chrome is one of the major reasons behind encountering this error. Also, the websites which have enabled HTTP might be inaccessible due to this error. Apart from these reasons, issues with SPDY sockets and Google Chrome’s data server may be responsible for your confrontation with the error.

Fixing the error – “ERR_SPDY_PROTOCOL_ERROR.”

Before approaching the complex techniques for resolving the “ERR_SPDY_PROTOCOL_ERROR” error, you must try the common solutions that are also easy and effective.

There are 2 types of solutions, Easy Solutions and Technical Solutions; let’s discuss them one by one.

Easy Solutions

Here are some easy solutions given below:

Restart Chrome

It is seen that the error disappears if the user shuts downs the Google Chrome application and then restarts it again. The success rate of this process is very high. restart chromeHowever, this is not a permanent solution, and you may have to face the error again.

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Clear Cache and Cookies

Another easy method is to clean all the junk in your Chrome browser. You can accomplish this task by clearing all the cache and cookies in your web browser that might be responsible for creating some security issues.clear cookies

To clear all the cache and cookies in Chrome, go to the settings and select “Clear Browsing Data” in the “History” tab. Clear the junk from “The beginning of time” to make your browser function like new.

Update Chrome

As Google has discontinued using SPDY in the newer versions of Chrome, it is efficient to use the latest version of the same. This will guarantee that you do not face any SPDY issues due to the outdated version of Chrome, thus resolving the “ERR_SPDY_PROTOCOL_ERROR” error.

To update your Chrome browser, you can visit the official Google Chrome website and download the updated file corresponding to the latest version of Chrome.update chrome

Alternatively, you can hit the “About Chrome” option in the “Help” menu. Chrome will check if any new update has been launched. Further, you can download the update file (if launched) from the same page. Run the file to get the latest version of the browser.

If the above methods don’t work, you must employ some complex and technical steps to resolve the “ERR_SPDY_PROTOCOL_ERROR” error.

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Switch to Incognito Mode

Try visiting a website in Chrome’s Incognito mode if you only ever see the ERR SPDY PROTOCOL ERROR warning there.

Cookies, site data, browsing history, and any data you type into forms won’t be saved when you use the Incognito mode. However, downloads and bookmarked pages are still stored.icognito

Here’s how to activate Incognito mode on Google Chrome:

  1. Activate Google Chrome. 
  2. On Chrome’s top menu bar, choose the three-dot menu.
  3. Select “New Incognito window” from the menu. Alternately, use Ctrl + Shift + N on the keyboard.
  4. Reopen the website.

You will have access to the website if this fixes the issue. Remember that this is not a long-term remedy, and you still need to determine how to get a more reliable one.

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Technical Solutions

Flush Sockets

To resolve the “ERR_SPDY_PROTOCOL_ERROR” error, you may have to flush the sockets in Google Chrome. Chrome provides inbuilt tools and features that make it easy to perform operations like flushing the sockets.flush sockets

Method: Go to the chrome://net-internals/#sockets and click the “Flush Socket Pools” button.

Flush DNS and Renew IP Address

  • For Windows PC

A command prompt is a command-line interpreter application included in most Windows operating systems. Its purpose is to execute commands that you type on the command line. Those commands use batch files and scripts to automate tasks, perform complex administrative tasks, and investigate or fix certain Windows problems.flush dns

In Windows, press Win + R, then type “cmd” in the pop-up windows. After that, hit Enter. Then enter the following commands after typing them at the command prompt:

“ipconfig /flushdns”

Check the website you’re trying to access once more after the operation.

  • For Mac

Launch Finder and choose Applications from the left-hand panel to accomplish this. After that, choose Terminal from the Utility folder by going down. Once at the Terminal, type, and press Enter the following command:

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponderflush dns in mac

To finish the procedure, you should enter your Mac’s password. After that, check the website you’re attempting to access once more to see if the issue is still present.

Also see: How to Fix “This Page Has a Redirect Loop” Error – TechWhoop


Err spdy protocol error: what does that mean?

Seeing the ERR SPDY PROTOCOL ERROR in Chrome can be annoying for website visitors. The warning indicates that the browser cannot establish a SPDY connection with the web server. This issue prohibits users from accessing a website, which could reduce the volume of online traffic to that site.

What occurs if I restart and purge Chrome?

Resetting Chrome's settings will make all of its settings default, just as if Chrome were newly installed and unconfigured. This implies that all customizations made to the startup home page, tab settings, search engine, pinned tabs, etc., will be lost.

How can I install Chrome repair again?

From, download the installation file once more. Install Chrome once more by using the new file. Use an offline installer if the installation is still not functioning.

Why does Google Chrome constantly give me errors?

It can be because the website is unavailable or because damaged cookies stored in your browser send incorrect data. Clear your browser's cache and make sure the page is currently loading. Disable all Chrome extensions, clear your DNS cache, and try again if the issue persists.


These are some of the ways to fix “ERR_SPDY_PROTOCOL_ERROR” error. Do visit us for more articles! If you use any of the methods above, then let us know about your experience in the comment section.

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