How To Fix Google Chrome Error ERR_SPDY_PROTOCOL_ERROR



Many users around the world use the default Google Chrome browser when browsing the Internet. Although the Google browser is a fairly stable and reliable tool, it is true that on occasion we may encounter an error. If while browsing you have encountered the ERR_SPDY_PROTOCOL_ERROR error, below we will show the steps to resolve it.

First of all, you should know that this error is due to the fact that Google modified the SPDY protocol which was developed by Google a long time ago to reduce the loading time of pages by the HTTP 2 protocol and stopped supporting SPDY. Therefore, although this is a rare error in the latest version of Chrome, many users may still encounter it, especially those who do not have Google Chrome properly updated and see how they cannot. not access certain pages.

Steps to fix ERR_SPDY_PROTOCOL_ERROR error in Google Chrome

Therefore, the first thing we are going to do to try and resolve this error is to check that Chrome is updated to the latest version. Otherwise, we need to update it, because in previous versions of the Google browser it is much more likely that we will encounter this problem.

If we have updated the browser or are already using the latest available version of Chrome, then we can try to open a Google Chrome window, go to chrome: // net-internals / # sockets, and click on the Flush socket pools button. Then we restart the browser and try to visit the same page where we found the error.

If we have an antivirus installed on the computer, it is possible that our security tool scans the HTTPS sites to obtain the security certificate before opening them in the browser. To check if this is the cause of the error, we can try to disable the HTTPS scan in antivirus. It is also advisable to do the same if we have a third-party firewall installed on the computer.

If despite everything we continue with the ERR_SPDY_PROTOCOL_ERROR error while trying to visit a page, we can also try to reset Google Chrome, clear the browsing history, cookies, cache, etc., or even clear the DNS cache in Google Chrome. From this link, you can follow the steps to clear Google Chrome’s DNS cache.


Google Chrome is one of the most used browsers in the world, according to statistics, 6 out of 10 users chose Google Chrome as their browser for its multiple features: performance, customization, operability, and integration of functions.

But like any application or software developed by human beings, Google Chrome does not ignore various errors and one of them is the ERR_SPDY_PROTOCOL_ERROR error which prevents us from having full access to a website and therefore prevents us perform the following tasks. to do either personal or business and this error can be generated
whether we are using a VPN or not.

The mentioned Google Chrome error usually occurs when we log into secure sites. To validate it, we check the HTTPS protocol in the URL before www, ERR_SPDY_PROTOCOL_ERROR is basically an error generated by a vulnerability whereby the Google Chrome browser no longer supports the SPDY protocol. This protocol allows the Chrome browser to load web pages much faster.

Google Chrome changed the SPDY protocol in order to reduce the page load time over the HTTP 2 protocol, therefore not supporting SPDY, but we can still find this error.

1. How to clear Google Chrome cache to fix ERR_SPDY_PROTOCOL_ERROR Chrome
This method consists of clearing the DNS cache of the browser itself, as Google Chrome has its own DNS cache, which is based on multiple domain name servers and which, with daily use of Google Chrome, can be affected by erroneous redirects that trigger the indicated error.

To perform this task we go to a new Google Chrome tab and there we paste the following line:

chrome: // net-internals / # sockets

There we click on the Flush Socket Pools button and then proceed to restart the browser to verify the connection to the desired websites.

2. Clear the operating system cache and renew the IP address to correct ERR SPDY PROTOCOL ERROR Chrome.

In some cases, it is possible that the error is related to issues with the general cache of the operating system itself and is simply emptied to fix it. The process of renewing the IP address includes changing the current IP address, as it can also be generated through this. some kind of error

Step 1: In this case, we are using Windows 10 so that in order to flush the DNS of the system, we go to the command prompt and perform the following operations:

ipconfig / flushdns

2nd step: Now to renew the IP address we run:

ipconfig / release (release the IP address)

Step 3:

ipconfig / renew (renew IP address)

3. Clear the Google Chrome cache to correct ERR SPDY PROTOCOL ERROR

When visiting a website, the browser leaves a trace that allows and facilitates subsequent access to that site to be much faster than normal access, but if any of the websites in Google cache Chrome a If its IP address or internal redirect has been changed, the ERR_SPDY_PROTOCOL_ERROR error may occur.

Step 1
To clear the Google Chrome cache, click on the Customize and control Google Chrome icon and in the displayed list select the Configuration option:

In the next window we go to the bottom of the page and click on the line Advanced. In the displayed options, go to the Privacy and security section and place the category Delete browsing data. You can also go to a new tab and enter the following line:

chrome: // parameters / clearBrowserData

2nd step
In the displayed window, we define the following elements:

Time from which the information will be deleted (preferably, recommends selecting the All option).
You must activate the Cookies and other data of sites and images and files stored in the cache checkbox.

Once we have this set, we click on the Clear Data button to continue the action. After that we have to restart the browser to check that everything is working in an ideal way.

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4. Update Google Chrome browser to fix ERR_SPDY_PROTOCOL_ERROR
One of the natural causes of this error is working with an outdated browser, as this affects the use and compatibility of general Google Chrome functions.

Step 1
To validate the presence of new updates for Google Chrome, you must go to the Customize menu and control Google Chrome, then go to the Help / About Google Chrome route.

2nd step
The browser will automatically check for updates and if they exist, they will be downloaded and applied immediately:

Remember that the current stable version of Google Chrome is version 71.

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5. Use Google Chrome in incognito mode to correct the ERR_SPDY_PROTOCOL_ERROR problem.
We have seen that the ERR_SPDY_PROTOCOL_ERROR error can be generated by errors in the cache of the website to visit so that using the incognito mode can help us navigate smoothly because when visiting a site in incognito mode, the cache will not be stored. this implies that this site will be loaded as if it is the first time that we have accessed it.

To access this method, we have two options: Use the key combination Ctrl + Shift + N

Go to the Google Chrome menu and select the New incognito window option.

With some of the proposed solutions, it will be possible to make a complete correction to the aforementioned error and thus take advantage of everything that Google Chrome offers us.

Err_spdy_protocol_error on Windows 10

Solution 1 – Recessed chrome sockets

According to users, you can fix this problem by simply rinsing the chrome bushings. To do this, follow the steps below:

In the browser address bar, insert chrome: // net-internal / # events & q = type: SPDY_SESSION% 20is: active and press Enter .
Click the down arrow in the upper right corner and select the Purge Boot option.
Check if the problem is resolved.
If the problem persists, follow these steps:

In the chrome address bar, type chrome: // net-internals / # sockets . Press Enter .
Click on the Plinth Pools button. Check if the problem is resolved.

Solution 2 – Add a website to Avast Web Shield exceptions

Avast has a Web Shield feature designed to protect you from malicious websites. This function provides some protection, but can also cause Err_spdy_protocol_error to appear. To resolve this issue, you need to add the website which you cannot access in Avast Web Shield. To do this, follow the steps below:

Open Avast GUI and go to Settings. Select Active Protection and click on Customize for Web Shield. Add website address to URLs to exclude section. After adding websites that you cannot access, the error should be fixed.

Few users reported that they fixed this issue permanently by disabling the HTTPS scanning option in Avast. So you can fix this problem by just following these steps:

Go to Avast> Settings.
Select Active Protection> Web Shield. Locate Select and deselect the HTTPS Scanning option. Click OK to save the changes. Rinse the outlets as indicated in solution 1 and check if the fault has been corrected.

Solution 3 – Restart your browser

According to users, sometimes you can fix this error by simply turning off and restarting your browser. After restarting your browser, check if the problem is resolved.

Solution 4 – Check if your browser is up to date

Sometimes there is a bug in your browser which causes this error. The easiest way to resolve this issue is to download the latest updates from Google Chrome. To do this, follow the steps below:

Click the Menu button in the upper right corner and select Settings from the menu.
When the Settings tab opens, click the About link in the left menu. Once you open this tab, Google Chrome will check for updates and download them automatically. After downloading the updates, restart the browser and check if the error has been corrected.

It is important to keep your browser up to date if you want to avoid such errors. We strongly recommend that you download the latest updates for your browser by following the steps above.

Solution 5 – Use Incognito mode

If you receive an Err_spdy_protocol_error message while accessing certain websites, you should try using IncoGnito fashion. This mode does not use extensions and does not store cache on your PC, so you can work around this problem by using Incognito mode. To access this mode, proceed as follows:

Click the Menu button in the upper right corner.
From the menu, select New Incognito Window. Alternatively, you can also use the key combination Ctrl + Shift + N.
When Incognito Mode starts, try to access the website to see if the issue is resolved.

Solution 6 – Flush DNS and renew IP

Sometimes flushing the DNS and renewing the IP address can fix this and many other network-related issues. This is a simple procedure, and in order to do so, you need to follow these steps:

Press Windows key + X to open the Win + X menu and select Prompt (Admin). After opening the command prompt, type ipconfig / flushdns and press Enter.

Now enter ipconfig / release and press Enter. Then type IPconfig / renew and press Enter.
When you’re done, close the command prompt and verify that the issue is resolved.
Note that you may need to reconfigure your internet connection after following these steps.

Solution 7 – Clear browser cache

Sometimes your cache can cause these errors and many more, but you should be able to fix this problem simply by clearing the browser cache. To clear the cache, follow these steps:

Press the Menu button in the upper right corner and select More tools> Clear browsing data.
If Open onglet’Supprimer navigation data ‘ in Open the following elements are lect the beginning of time.

Check Cookies and other websites and plug-in data, cached images and files, and Hosted application data. You can also select the browsing history and download history, but these options are not mandatory. Click on Clear data and wait for Chrome to clear the cache. Then restart the browser and check if the problem is resolved.

Solution 8 – Disable your antivirus software

Users reported that this issue can occur because of their antivirus software, but you should be able to fix it by temporarily disabling it. If disabling the anti-virus software resolves the issue, consider switching to another anti-virus program. Users reported that they had issues with Avast Antivirus, but after switching to Avira or another antivirus solution, the bug was completely fixed.

Solution 9 – Use the chrome cleaning tool

Some users suggest using Chrome Cleaner Tool to fix this problem on Google Chrome. This tool can be used to remove problematic extensions that are interfering with your web browser and to fix Err_spdy_protocol_error and other bugs. To fix this problem, just download and run the Chrome Cleanup Tool. After the tool scans your PC, check if the issue is resolved.

We also recommend that you download this tool (100% safe and tested by us) to scan and fix various PC issues like file loss, malware, and hardware errors.

Err_spdy_protocol_error message may prevent you from accessing your favorite websites, but as you can see this error can be fixed by changing your antivirus configuration. If that doesn’t help, you can try any other solution from this article.

That’s it you succeeded Correct Chrome err_spdy_protocol_error but if you still have questions regarding this article, feel free to ask them in the comments section.

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