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The most likely reason you are seeing ERR_SPDY_PROTOCOL_ERROR alerts is because of an adware infection. You should never trust these kinds of alerts, everything they claim is false, unless the problem is completely unrelated. If an ad-supported software is indeed to blame, expect very invasive ads. If you don’t pay attention to how you install free applications, it’s not surprising that an advertising-supported application is installed. The advertisements themselves won’t endanger your operating system, as long as you don’t fall for the scam. The scammers on the other side of the phone would try very hard to fool you into providing remote access to your PC, and then try to make you believe that they have fixed the issue (which doesn’t even exist in the first place), for which they would charge you a lot of money. Bear in mind that you should not allow some weird tech-support to remotely access your system, especially when their advert appears in your browser. And if you are still concerned about the warning you are getting, it’s false, and your device is secure. If you want the adverts to no longer appear, all you need to do is erase  ERR_SPDY_PROTOCOL_ERROR.

Download Removal Toolto remove ERR_SPDY_PROTOCOL_ERROR

Why are the warnings popping up

You most probably got the threat through free software packages. A lot of freeware have something added to them, and you will not see them if Default mode are what you pick during installation. Instead of Default, pick Advanced (Custom) settings. If you happen upon any added items, uncheck them. And if you think they might be useful, keep in mind that they didn’t intend to correctly reveal their installation, and you would have installed them by accident. If you wish to avoid having to eliminate ERR_SPDY_PROTOCOL_ERROR and similar over and over again, pay closer attention to how you install programs.

The bogus ads intend to trick users into believing that there is something amiss with their device. It can be some kind of virus, system error, licensing issues, etc, scammers will use all kinds of situations. Since scare tactics are particularly effective with less-computer savvy people, the pop-up will possibly also include warnings about possible data loss or leak. According to the warning, if you wish to solve the mentioned problems and prevent data from leaking, you must dial the given number, where fake tech-support will do something to fix a problem that does not even exist and charge you loads of money for it. Real companies will never request you to call them, and especially not via some random alert, so next time you run into similar advertisements, remember that. For example, if Apple or Microsoft is asking you to call them, you’re most certainly being scammed. The scammers will use technical terms in order to appear as if they are legitimate, will explain that the issues have to be urgently fixed, and charge a lot of money. The reason these tech-support scams are still around is because less-computer savvy people still fall for them. It is not difficult to imagine why some users may fall for these scams because if they’re regularly showing up, they might see more legitimate. If you are not convinced real companies would not use browser alerts to warn you about malicious software, you could always check out the given number. Most results will include comments from people advising to be cautious of these con artists. So don’t pay any attention to the warnings and just deal with the issue. If the pop-ups are constantly appearing on your screen, you will need to find and erase ERR_SPDY_PROTOCOL_ERROR ad-supported software.


Taking care of ERR_SPDY_PROTOCOL_ERROR termination should not be hard, so it is doubtful you will have problems. There are two methods to delete ERR_SPDY_PROTOCOL_ERROR, manually or automatically. Below this report, you will find instructions on how to manually fix the issue if you prefer this method. If you would like to use spyware removal software, obtain the utility and have it remove ERR_SPDY_PROTOCOL_ERROR for you. As long as you delete the infection completely, the alerts ought to no longer pop up.

Learn how to remove ERR_SPDY_PROTOCOL_ERROR from your computer

Step 1. How to delete ERR_SPDY_PROTOCOL_ERROR from Windows?

a) Remove ERR_SPDY_PROTOCOL_ERROR related application from Windows XP

  1. Click on Start
  2. Select Control Panel winxp-start Erase ERR_SPDY_PROTOCOL_ERROR
  3. Choose Add or remove programs winxp-control-panel Erase ERR_SPDY_PROTOCOL_ERROR
  4. Click on ERR_SPDY_PROTOCOL_ERROR related software winxp-add-remove-program Erase ERR_SPDY_PROTOCOL_ERROR
  5. Click Remove

b) Uninstall ERR_SPDY_PROTOCOL_ERROR related program from Windows 7 and Vista

  1. Open Start menu
  2. Click on Control Panel win7-start Erase ERR_SPDY_PROTOCOL_ERROR
  3. Go to Uninstall a program
  4. win7-control-panel Erase ERR_SPDY_PROTOCOL_ERROR
  5. Select ERR_SPDY_PROTOCOL_ERROR related application
  6. Click Uninstall win7-remove-program Erase ERR_SPDY_PROTOCOL_ERROR

c) Delete ERR_SPDY_PROTOCOL_ERROR related application from Windows 8

  1. Press Win+C to open Charm bar win8-charm-bar Erase ERR_SPDY_PROTOCOL_ERROR
  2. Select Settings and open Control Panel win8-menu-control-panel Erase ERR_SPDY_PROTOCOL_ERROR
  3. Choose Uninstall a program win8-programs-features Erase ERR_SPDY_PROTOCOL_ERROR
  4. Select ERR_SPDY_PROTOCOL_ERROR related program
  5. Click Uninstall win8-uninstall-program Erase ERR_SPDY_PROTOCOL_ERROR

d) Remove ERR_SPDY_PROTOCOL_ERROR from Mac OS X system

  1. Select Applications from the Go menu. mac-os-x-go-menu Erase ERR_SPDY_PROTOCOL_ERROR
  2. In Application, you need to find all suspicious programs, including ERR_SPDY_PROTOCOL_ERROR. Right-click on them and select Move to Trash. You can also drag them to the Trash icon on your Dock. mac-os-x-application-trash Erase ERR_SPDY_PROTOCOL_ERROR

Step 2. How to remove ERR_SPDY_PROTOCOL_ERROR from web browsers?

a) Erase ERR_SPDY_PROTOCOL_ERROR from Internet Explorer

  1. Open your browser and press Alt+X
  2. Click on Manage add-ons ie-alt-x Erase ERR_SPDY_PROTOCOL_ERROR
  3. Select Toolbars and Extensions
  4. Delete unwanted extensions ie-toolbars-extensions Erase ERR_SPDY_PROTOCOL_ERROR
  5. Go to Search Providers
  6. Erase ERR_SPDY_PROTOCOL_ERROR and choose a new engine ie-search-provider Erase ERR_SPDY_PROTOCOL_ERROR
  7. Press Alt+x once again and click on Internet Options ie-menu Erase ERR_SPDY_PROTOCOL_ERROR
  8. Change your home page on the General tab ie-option-general Erase ERR_SPDY_PROTOCOL_ERROR
  9. Click OK to save made changes

b) Eliminate ERR_SPDY_PROTOCOL_ERROR from Mozilla Firefox

  1. Open Mozilla and click on the menu
  2. Select Add-ons and move to Extensions firefox-menu-options Erase ERR_SPDY_PROTOCOL_ERROR
  3. Choose and remove unwanted extensions firefox-extensions Erase ERR_SPDY_PROTOCOL_ERROR
  4. Click on the menu again and select Options firefox-menu Erase ERR_SPDY_PROTOCOL_ERROR
  5. On the General tab replace your home page firefox-homepage Erase ERR_SPDY_PROTOCOL_ERROR
  6. Go to Search tab and eliminate ERR_SPDY_PROTOCOL_ERROR firefox-search-engines Erase ERR_SPDY_PROTOCOL_ERROR
  7. Select your new default search provider

c) Delete ERR_SPDY_PROTOCOL_ERROR from Google Chrome

  1. Launch Google Chrome and open the menu
  2. Choose More Tools and go to Extensions chrome-more-menu Erase ERR_SPDY_PROTOCOL_ERROR
  3. Terminate unwanted browser extensions chrome-extensions Erase ERR_SPDY_PROTOCOL_ERROR
  4. Move to Settings (under Extensions) chrome-set-pages Erase ERR_SPDY_PROTOCOL_ERROR
  5. Click Set page in the On startup section chrome-set-homepage Erase ERR_SPDY_PROTOCOL_ERROR
  6. Replace your home page
  7. Go to Search section and click Manage search engines chrome-manage-search Erase ERR_SPDY_PROTOCOL_ERROR
  8. Terminate ERR_SPDY_PROTOCOL_ERROR and choose a new provider


  1. Launch Microsoft Edge and select More (the three dots at the top right corner of the screen). edge-menu Erase ERR_SPDY_PROTOCOL_ERROR
  2. Settings → Choose what to clear (located under the Clear browsing data option) edge-settings Erase ERR_SPDY_PROTOCOL_ERROR
  3. Select everything you want to get rid of and press Clear. edge-clear-browsing-data Erase ERR_SPDY_PROTOCOL_ERROR
  4. Right-click on the Start button and select Task Manager. task-manager-open Erase ERR_SPDY_PROTOCOL_ERROR
  5. Find Microsoft Edge in the Processes tab.
  6. Right-click on it and select Go to details. task-manager-processes Erase ERR_SPDY_PROTOCOL_ERROR
  7. Look for all Microsoft Edge related entries, right-click on them and select End Task. task-manager-end-task Erase ERR_SPDY_PROTOCOL_ERROR

Step 3. How to reset your web browsers?

a) Reset Internet Explorer

  1. Open your browser and click on the Gear icon
  2. Select Internet Options ie-menu Erase ERR_SPDY_PROTOCOL_ERROR
  3. Move to Advanced tab and click Reset ie-advanced-tab Erase ERR_SPDY_PROTOCOL_ERROR
  4. Enable Delete personal settings
  5. Click Reset ie-reset-window Erase ERR_SPDY_PROTOCOL_ERROR
  6. Restart Internet Explorer

b) Reset Mozilla Firefox

  1. Launch Mozilla and open the menu
  2. Click on Help (the question mark) firefox-menuhelp Erase ERR_SPDY_PROTOCOL_ERROR
  3. Choose Troubleshooting Information firefox-menu-help Erase ERR_SPDY_PROTOCOL_ERROR
  4. Click on the Refresh Firefox button firefox-reset Erase ERR_SPDY_PROTOCOL_ERROR
  5. Select Refresh Firefox

c) Reset Google Chrome

  1. Open Chrome and click on the menu chrome-menu Erase ERR_SPDY_PROTOCOL_ERROR
  2. Choose Settings and click Show advanced settings chrome-advanced-menu Erase ERR_SPDY_PROTOCOL_ERROR
  3. Click on Reset settings chrome-reset Erase ERR_SPDY_PROTOCOL_ERROR
  4. Select Reset

d) Reset Safari

  1. Launch Safari browser
  2. Click on Safari settings (top-right corner)
  3. Select Reset Safari... safari-reset-menu Erase ERR_SPDY_PROTOCOL_ERROR
  4. A dialog with pre-selected items will pop-up
  5. Make sure that all items you need to delete are selected safari-reset Erase ERR_SPDY_PROTOCOL_ERROR
  6. Click on Reset
  7. Safari will restart automatically

Download Removal Toolto remove ERR_SPDY_PROTOCOL_ERROR

* SpyHunter scanner, published on this site, is intended to be used only as a detection tool. More info on SpyHunter. To use the removal functionality, you will need to purchase the full version of SpyHunter. If you wish to uninstall SpyHunter, click here.

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