ERR_SPDY_PROTOCOL_ERROR is a SPDY protocol-related error that blocks access to popular sites on Google Chrome
ERR_SPDY_PROTOCOL_ERROR is a rogue pop-up which can relate in installation of adware and other similar potentially unwanted applications
ERR_SPDY_PROTOCOL_ERROR is an error that Chrome users can encounter during web browsing. Usually, people cannot access Google-related sites such as Gmail or YouTube. However, there are several cases when this error affects other websites, such as Tumblr, Facebook, or Wikipedia.
ERR_SPDY_PROTOCOL_ERROR message is the culprit why many could not reach the destination website. Additionally, users complained that, in some cases, the issue comes and goes. The reason for the error lies within the SPDY protocol, which Google recently changed to HTTP/2 and stopped supporting the former one. Likewise, people cannot access HTTP enabled pages.
Note that the 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 this issue. Nevertheless, we provide several solutions to fix ERR_SPDY_PROTOCOL_ERROR below.
|Issue||The error prevents users from accessing Wikipedia, Reddit, and other popular websites. Additionally, the issue is consistent with some Google-related sites|
|Reasons||In most of the cases, the error occurs due to changes made to SPDY protocol by Google. However, be aware that malware might be involved if frequent errors are plaguing your machine|
|Detection||If you are concerned that your machine might be infected with malware, scan it with reputable anti-malware software|
|Error fix||To fix ERR_SPDY_PROTOCOL_ERROR, you should cleat browsing data, flush socket pools, or perform other steps. To get rid of the issue automatically, we suggest using Reimage Reimage Cleaner|
There are several ways to remove ERR_SPDY_PROTOCOL_ERROR. However, in some cases, they might be only temporary. Also, because there are several reasons why the issue might occur, finding the root cause might be difficult. Therefore, we suggest you download and install Reimage Reimage Cleaner – it can fix various Windows-related errors in mere seconds.
Google stopped supporting SPDY protocol awhile ago because of a found vulnerability within it. Hence, those who are using older versions of Google Chrome may be encountering ERR_SPDY_PROTOCOL_ERROR more frequently. The solution would be to upgrade the browser to the newest version, then the issue would solve itself automatically.
Unfortunately, many users reported that ERR_SPDY_PROTOCOL_ERROR occurs on the newest browser versions, and affect particular websites only (such as Reddit). Even after applying the fix, they claimed that the problem returns a few times a day and affects the same sites as previously.
ERR_SPDY_PROTOCOL_ERROR is an error message that can occur once the user is blocked from accessing specific websites like Gmail, Reddit, Wikipedia, etc.
If you noticed that ERR_SPDY_PROTOCOL_ERROR is causing you troubles on a regular basis, there might be a chance that your settings were altered by a computer virus. For example, there are several known DNS hijackers (for instance, Utopia.net) that prevent users from reaching destination websites and instead lead them to ad-filled ones. In other cases, “hosts” files might
Unfortunately, such a scenario might lead to adware or further malware infections. Potentially unwanted programs and adware may cause ERR_SPDY_PROTOVOL_ERROR in some cases, and not only. You will also see an increased amount of advertisements such as pup-ups, flashing windows, in-text links, banners, etc.
However, adware should be the least of your worries, as malicious software like Trojans, RATs, rootkits, worms, viruses, and other computer parasites are usually programmed to be stealthy, meaning that users might not notice malware presence for months or even years. In the meantime, such data like banking details might be leaked to cybercriminals, or other threats, such as ransomware, proliferated to the host PC.
Thus, we suggest you scan your computer with an anti-malware program to ensure that there are no underlying infections on your device before you proceed with ERR_SPDY_PROTOCOL_ERROR removal. If anything malicious is found, you should immediately remove malware and PUPs, as they are a huge risk to your safety.
Malware and adware should be avoided at all costs
If you wonder what causes various pop-up errors to show up on your browser, 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 or another type of 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.
Finally, to avoid malware that can also negatively impact not only your browsing experience but also personal safety, you should make sure that your machine is protected with anti-malware software that uses real-time protection feature, patch yous OS/installed apps with security updates, avoid pirated software/cracks, never reuse passwords, and employ additional tools like ad-blockers to stop intruders from entering your machine in the first place.
Get rid of ERR_SPDY_PROTOCOL_ERROR for good
As mentioned above, there are 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 PC repair tools like Reimage Reimage Cleaner . Besides, most of the computer malware can be terminated with the application, as well.
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.
Flush Socket Pools in order to fix ERR_SPDY_PROTOCOL_ERROR - many users reported that this method was effective to them
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.
For more solutions for the error, please visit the following article.
NOTE: You can also go to the Main Settings and disable HTTPS Scanning to fix ERR_SPDY_PROTOCOL_ERROR.