Best Ways to Fix ERR_SPDY_PROTOCOL_ERROR on Chrome in 2023

by Claudius Woods

Best Methods to Fix ERR_SPDY_PROTOCOL_ERROR on Chrome in 2023 - Google Chrome is one of the best web browsers around. It has high-level capabilities for access to websites. It is free for all users, and has a fast processing speed. This makes it a valuable tool everywhere in the world. There is no limit to your web access using Google Chrome.

Chrome sees regular performance updates to remain ahead of its competitors. These updates also include bug fixes. Chrome may malfunction from time to time. The Chrome moderators handle most bugs, but one long-standing issue is the ERR_SPDY_PROTOCOL_ERROR . It is a major nuisance in internet browsing. As such, you need to know the Best Way to Fix ERR_SPDY_PROTOCOL_ERROR on Chrome .



Google Chrome is a vast application. It has various features that ease and speed up web access. Chrome uses a number of protocols that maintain a stable browsing experience. The functioning of these protocols is essential for the browser to run.

One such protocol is the SPDY or " Speedy " protocol. It is Google's own networking protocol for Chrome. This particular protocol handles traffic over the browser. It is an efficient protocol that connects you to the content you wish to view. In that way, SPDY protocol handles traffic over HTTP web pages. Your connection to a website depends on the SPDY protocol.

A failure to connect to a website on Chrome results from the ERR_SPDY_PROTOCOL_ERROR. It is the most common error in relation to the SPDY protocol. In case this error pops up, you cannot browse over the internet without resolving it. Hence, understanding ERR_SPDY_PROTOCOL_ERROR is a necessity for Chrome users.


The ERR_SPDY_PROTOCOL_ERROR has a common occurrence. But the issue surrounding it can vary for different Chrome users. As such, it is difficult to identify the root cause of the error. The error occurs out of the blue, and without warning. It is a real pain to implement a solution to a problem with an unknown origin.

Even so, there are several solutions to fix the problem. Some of these are very basic, while others help if the general methods do not work. All in all, you can implement one of these general solutions for ERR_SPDY_PROTOCOL_ERROR. There is no real need to identify exactly where the problem lies.

Best Methods to Fix Chrome ERR_SPDY_PROTOCOL_ERROR 2023

As stated, there is more than one way to resolve the SPDY protocol error. These solutions relate to the functioning of Google Chrome itself. There may be one or more Chrome settings that are not in tune with your system settings. Hence, you need to tweak a few system or Chrome settings to fix ERR_SPDY_PROTOCOL_ERROR.

You can use one of the following methods on How to Fix ERR_SPDY_PROTOCOL_ERROR . For simplicity, the solutions progress from basic methods to ones more specific to the SPDY protocol.

1. Use Google Chrome's Latest Version

Use Google Chrome's Latest Version
Use Google Chrome's Latest Version

Google Chrome receives back-end updates from time to time. By default, Chrome updates itself to the latest version. However, there is an option to disable automatic updates for Chrome. Your system may not be updating Chrome on its own.

The ERR_SPDY_PROTOCOL_ERROR has a common occurrence on outdated Chrome versions . In case you have updates disabled, you need to update Chrome manually. To do so:

1. Open Google Chrome.

2. Click on "Customize and control Google Chrome," signified by the three-dot symbol to the top right.

3. Go to the "Settings" option in the menu.

4. Click on "About Chrome" in the list on the left.

5. Chrome checks its version on your system, and provides an update option, if available. In case Chrome is up-to-date, it displays the message, " Google Chrome is up to date. "

2. Use Chrome in Incognito Mode

On the internet, almost all websites have their own set of preferences or settings. The term for these preferences is Cookies. Once you visit and accept the cookies on a website, Chrome saves it to your system. This has a relation to the SPDY protocol as well.

For one reason or another, the SPDY protocol may have issues with the cookies of a specific website . To avoid having to save such data, you can use Chrome's Incognito Mode.

The Incognito Mode has the same functionality as the normal Chrome window. The difference is in the data Chrome saves to your system in Incognito Mode. Using the Incognito window, Chrome deletes any cookies or browsing history once your session ends. It is a simple way to avoid creating a log of your browsing history, cookies, as well as other data.

To use Chrome in Incognito Mode:

1. Open Google Chrome.

2. Click on "Customize and control Google Chrome," signified by the three-dot symbol to the top right.

3. Use the "New incognito window" option to operate Chrome in Incognito Mode.

Or, right click the Chrome icon and click on "New incognito window" .

3. Temporarily Disable Antivirus

The SPDY protocol does not only handle traffic over the internet. It also has security checks for data on the internet. It protects your system from communicating with harmful websites by blocking access. In this way, the SPDY protocol is your system's protection over the web.

In addition, there are various antivirus programs available in the market. You may have one set up on your system. These programs also keep tabs on your web browsing, and block access to harmful websites. The antivirus program does this by matching website data to its virus signature.

There are times when your antivirus intervenes, and Chrome displays the ERR_SPDY_PROTOCOL_ERROR. In such cases, you can continue to the website by Disabling the Antivirus check on it .

This process is different for each antivirus program. For Avast Antivirus, you can do so by:

1. Open Avast.

2. Access the Avast "Settings" .

3. Go to the "Active Protection" tab.

4. On the tab, use the "Customize Web Shield Protection" option.

5. Under "URLs to exclude:" , you can enter a website address to exclude checking on it.

Note that you should only use this method with trusted websites. When the SPDY protocol or your antivirus blocks access to a website, it is for good reason. Accessing such websites may bring harm to your system.

4. Flush SPDY Sockets in Chrome

Google Chrome uses network sockets to establish connections over the internet. This has a direct relation to the SPDY protocol. Think of these sockets as the endpoints of a connection. The purpose of flushing sockets is to refresh Chrome's connection capability to websites . This is a solution specific to the ERR_SPDY_PROTOCOL_ERROR. It is always worth a try if you come across the issue on Chrome.

Note that when you Flush SPDY Sockets in Chrome, any tabs open on the Chrome window crash. It is ideal to close any existing tabs before flushing sockets. To implement this solution:

1. Open Google Chrome.

2. Type: "chrome://net-internals" in the address bar.

3. In the list on the left, go to the "Sockets" tab.

4. Click on the "Flush socket pools" button.

5. Close and reopen the Chrome window to see if it resolves the problem.

5. Use Command Prompt to Flush DNS Settings

DNS is the Domain Name System. It is like an address system for domains over the internet. These DNS settings represent the IP of a domain on the web. It is an essential part of accessing any website through your system.

Flushing the DNS Settings means to refresh the system IP. Afterwards, the SPDY protocol tries a different connection path for your system to a website. This helps resolve the ERR_SPDY_PROTOCOL_ERROR .

Note that this solution makes use of the system's Command Prompt . To Use Command Prompt to Flush DNS Settings:

1. Open the "Start" menu to the bottom left.

2. In the Start menu search bar, type " Command Prompt ".

3. Open the Command Prompt application by right clicking on it, and then selecting "Run as Administrator" .

4. Afterwards, type the following commands in Command Prompt:

a. "ipconfig /release" , and press Enter.

b. "ipconfig /all" , and press Enter.

c. "ipconfig /flushdns" , and press Enter.

d. "ipconfig /renew" , and press Enter.

e. "netsh int ip set dns" , and press Enter.

f. "netsh winsock reset" , and press Enter.

5. Once the process finishes, close the Command Prompt window.

6. Restart your system.

7. Open Google Chrome and access the website that previously displayed the ERR_SPDY_PROTOCOL_ERROR.

6. Use the Google Chrome Cleanup Tool

The Google Cleanup Tool is your one-stop to resolve most Google Chrome problems. It helps detect and resolve issues that cause crashes, and also removes unwanted advertisements. The tool is free, and comes in handy to resolve the ERR_SPDY_PROTOCOL_ERROR as well .

The Google team provides a comprehensive explanation of the use of the tool. The tool resets most of the Chrome settings upon use. You may wish to save your necessary Chrome settings before implementing this method.

Go to the Google Chrome Help to start the Chrome Cleanup Tool. You can also Download the Google Chrome Cleanup Tool .

Conclusion of How to Fix ERR_SPDY_PROTOCOL_ERROR on Chrome

Google Chrome is an amazing tool to browse content over the internet. It is one of the fastest and easy-to-use modern-day applications. You can use the browser to access any and all websites through your internet connection.

But as is with most applications, Google Chrome is not error free. There are many bugs that bring your browsing to a halt. One such issue is the ERR_SPDY_PROTOCOL_ERROR. Fortunately, there are a few Best Ways to FIX ERR_SPDY_PROTOCOL_ERROR in Chrome . You can use these methods to continue your fast browsing through the application. You may also use the following video for a step-by-step visual to resolve the problem:

About Claudius Woods

Claudius began his blogging journey in the early 2000s, sharing his experiences and knowledge about Microsoft Windows on his dedicated website. His ability to simplify complex technical concepts and provide practical solutions to common Windows-related issues quickly gained attention within the tech community.

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