ERR_SPDY_PROTOCOL_ERROR blocks users from accessing popular websites on Google Chrome
ERR_SPDY_PROTOCOL_ERROR is an error which Chrome users can encounter while browsing. Usually, people cannot access Google-related sites such as Gmail or YouTube. However, there are several cases when this error affects non-related pages like Tumblr, Facebook, or Wikipedia as well.
Once the browser is corrupted, the user sees ERR_SPDY_PROTOCOL_ERROR message and is unable to reach the desired website. It is because Google Chrome switched from SPDY protocol to HTTP/2 and stopped supporting the former one. Likewise, people cannot access HTTP enabled pages.
Note that SPDY protocol was initially designed to reduce website load latency and improve web security by manipulating HTTP traffic. However, now users can notice significant slowdowns and other browsing-related problems due to ERR_SPDY_PROTOCOL_ERROR.
Even though there are several ways to remove ERR_SPDY_PROTOCOL_ERROR, they are only temporary. Therefore, we suggest you fix this problem automatically. For that, get Reimage and run a full system scan. Shortly after, you will be able to enjoy browsing the Internet without any disruptions.
Also, we recommend employing a reliable security software since there is a high possibility that your browser will be vulnerable to adware programs once ERR_SPDY_PROTOCOL_ERROR occurs. These PUPs are designed to deliver numerous potentially dangerous ads which deteriorate your computer's performance even more.
If you do not want to install additional software, try the manual ERR_SPDY_PROTOCOL_ERROR removal guidelines below. Sadly, we cannot guarantee that the problem will not reappear after some time. Therefore, we suggest you to automatically fix the problem and eliminate other potentially unwanted programs on your computer.
PUPs can get inside your system together with free software
If you wonder what causes ERR_SPDY_PROTOCOL_ERROR, there are several reasons why you are blocked from accessing specific websites, according to NoVirus.uk team. The best case scenario would be that your Google Chrome browser is outdated. However, numerous potentially unwanted programs might also be corrupting your system.
Since they spread in software-bundles, usually users do not even notice their presence. Developers of such adware programs hide the checkmarks permitting the installation of PUP among the optional components of free software. Likewise, people who choose to install regular programs with Quick/Recommended options are unable to deny the installation of adware.
You can protect your system by avoiding the latter settings and installing software with Advanced or Custom options. They will disclose the information about additional downloads and allow you to de-select the marks permitting to install potentially unwanted programs alongside.
Get rid of ERR_SPDY_PROTOCOL_ERROR for good
As mentioned above, there multiple ways how to remove ERR_SPDY_PROTOCOL_ERROR during browsing sessions. However, it is crucial to detect the source of the problem which might be a challenge for a regular computer user. You can try to eliminate the problem with the help of the instructions below.
Note that if none of them seem to work, we recommend trying automatic ERR_SPDY_PROTOCOL_ERROR removal with Reimage, Malwarebytes MalwarebytesCombo Cleaner or Plumbytes Anti-MalwareMalwarebytes Malwarebytes. These security programs will ensure safe elimination procedure and clean your system from other potential computer threats.
Method 1. Flush Socket in Google Chrome
- Open Chrome and type chrome://net-internals/#sockets in the address bar;
- Navigate to the top-right corner of the screen and click on the arrow button;
- Select Flush Sockets;
- Try re-opening the desired website and see if the error has disappeared.
NOTE: If you are still blocked from entering the page, type chrome://net-internals/#events&q=type:SPDY_SESSION%20is:active and click on Flush Socket Pools to fix the problem.
Method 2. Flush DNS cache from your computer
- Open Command Prompt;
- Submit the following commands:
- Ipconfig/ flush DNS
- Ipconfig/ renew
- Try visiting the blocked website again.
Method 3. Check Antivirus settings
Those who are using Avast antivirus software should check its settings since it might be the reason why you cannot access individual websites.
- Open Settings on the Antivirus software;
- Navigate to the active protection;
- Select Customize Web Shield Protection;
- Add the websites' URL links which you are unable to access.
NOTE: You can also go to the Main Settings and disable HTTPS Scanning to fix ERR_SPDY_PROTOCOL_ERROR.