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Fix localhost sent an invalid response ERR SSL

Have you ever come across localhost err_ssl_protocol_error? Letu2019s find out how to fix this ERR SSL_PROTOCOL_ERROR in simple ways. Letu2019s get started!

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Fix localhost sent an invalid response ERR SSL

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  1. Fix localhost sent an invalid response ERR SSL_PROTOCOL_ERROR Have you ever come across localhost err_ssl_protocol_error? This is one of the most common issues that occur on a website. While numerous ways exist to solve the error, many web owners are unaware of them. This is when this technical article comes to play. The blog post will help you resolve localhost sent an invalid response. err_ssl_protocol_error on Chrome, Firefox, Safari, Android, and iOS. If you are facing the same error on any of the above-mentioned browsers or OS, you are at the right place! What is Localhost? The term localhost refers to making your computer a server. A simple example of this is a website hosted on a server. The same goes for localhost, where your device is the server. You can call this connection a loopback; its IP address is 127.0.0.112 It works as a virtual server that does not need the internet to operate the device. Technically speaking, the localhost device is requesting itself. Also Read: How To Change Your Website’s Content In cPanel? What Does ERR_SSL_PROTOCOL_ERROR Localhost Mean? You might’ve faced localhost sent an invalid response or err_ssl_protocol_error on Chrome or Firefox. This SSL error

  2. occurs when a browser fails to create a secure connection with a website. It can be caused when a site’s SSL (Secure Sockets Layer) certificate or a client’s browser has some problem, leading to users driving away from your website. Now that you know about localhost and its error, we shall jump directly to the solutions. Also Read: How to Find Out the Owner of a Website Domain Resolving localhost sent an invalid response. err_ssl_protocol_error ➢ ➢ How to Fix ERR_SSL_PROTOCOL_ERROR in Chrome? Below are the ways to fix the error in Chrome - ★ ★ Install or update the latest Chrome version by going to - The Google Chrome help center ensures you have the latest version installed on Chrome. Install the latest version from Google Chrome’s website or update chrome from the browser if you don’t have the latest version. ★ ★ To update from the browser -  1.Open Chrome and click the three-dot icon (Customize and control Google Chrome).

  3. 2.In the drop-down menu, tap on help 3.Now, Click “About Google Chrome.” 4.After opening the about section, you will find a box showcasing updates. Click on the relaunch to start the update. ★ ★ To download the Latest Version from the site - 1.Go to your search engine and open this Link in the new tab -

  4. 2.After opening the link, you will see a button for downloading chrome. Click on it to start downloading. After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ ★ Adjust the date and time of your device - Synchronization management is conducted as it affects SSL connection across the web. Additionally, some SSL certificates depend on a device's inbuilt date and time system for establishing a connection. If your time & date is incorrect, you need to Adjust them! ➔ ➔ For Windows Users 1.For Windows users, search the “Time and Date Settings” on your device’s search bar

  5. 2.Turn on the set time and zone automatically ➔ ➔ For Mac Users

  6. 1.Mac OS users can open the System settings on their devices.

  7. 2.Click on General 3.Select on date & time option automatically. After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ Remove the cache and cookies on your website by heading to - 1.Google Chrome browser & Click the three-dot icon (customize and control Google Chrome).

  8. 2.A drop-down menu will open with multiple options. You are supposed to click on the last third alternative - Settings. 3.Open the Privacy and security settings and select the data you want to clear.

  9. 4.The pop-up window showcases three options, out of which you need to click on Cookies & other site data. After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ ★ To clear the SSL slate in your OS - It’s crucial to delete the certificate for the website you are supposed to open, but if you don’t find that one, remove all the certificates or the ones you think are necessary. ➔ ➔ For Windows users -  1.Click on the start window and search for “Internet options.” 2.After opening the internet options, tap on the Content button in the top menu bar to find the SSL certificates.

  10. 1. In the pop-up window, click on Clear SSL slate right below the certificates. This will delete all the SSL certificates stored on your local device. ➔ For Mac OS users - 

  11. 1.Go into your system options (Go).

  12. 2.Search for Utilities.

  13. 3.Tap on Keychain Access. 4.A pop-up window will appear, There, you need to select “System”. After that, You will get a screen with a list of SSL

  14. certificates stored on your local device. 5.Click on the Listed SSL Certificate manually & delete them manually. After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ ★ Lastly, turn off the antivirus and firewall for a brief time.  Head to - 1.Click on Start and search the “Control Panel” option.

  15. 2.In those options, click on System and Security Option. 3.Click on the Windows Firewall 4.Click on the private network and turn off the Firewall.

  16. Do ensure to check the website you are trying to access after checking each method. If none of the above methods solve the error, the connection issue is with the server. Also Read: A Guide to Fix RDP Error: An Internal Error has Occurred ➢ ➢ How to Fix ERR_SSL_PROTOCOL_ERROR in Firefox?  To clear up the SSL connection error in Firefox, implement the following parameters - ★ ★ As mentioned above, automate the date and time of your device.  After completing the solution, go back to your site and refresh it to check if the problem still persists.  ★ ★ Clear the SSL slate.  After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ ★ Wipe out the cache and cookies in the settings of your Firefox browser.  To start the process - 1. Open Mozilla Firefox. 2. Click on the three-dash menu bar at the top right corner of the browser.

  17. 3. Click Settings from the sub-menu bar 4. After opening, click on Privacy & security.

  18. 5. scroll down to find the Cookies and Site Data. 6.Finally, click on Clear Data to erase stored cookies and cache. After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ ★ Update and download the latest version of Firefox. To release the latest version of Firefox - 1.Open Mozilla Firefox. 2.Click on the three-dash menu bar at the top right corner of the browser.

  19. 3.Tap on Help from the drop-down menu 4.Click on About Firefox.

  20. 5.A pop-up window will appear showcasing - Restart to Update Firefox. Click on the link to start the update. After completing the solution, go back to your site and refresh it to check if the problem still persists. ➢ ➢How to Fix ERR_SSL_PROTOCOL_ERROR in Safari? ★ ★ As explained above, check the date and time of your device and automate them if they are not. After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ ★ Clear the local SSL slate from the device. After completing the solution, go back to your site and refresh it to check if the problem still persists. Erase the cache and cookies from the website by moving to - 1.Safari browser and click on History.

  21. 2.Click on “Clear History” After completing the solution, go back to your site and refresh it to check if the problem still persists. Also Read: How to Access your Windows VPS using RDP on Apple Mac? How to Fix ERR_SSL_PROTOCOL_ERROR in Android?  Firstly, check if your device's date and time are synchronized; if they are not, update them to automated adjustment.

  22. 1.Go to Settings & search for “Date & time.” After that, click on it 2.Set the date and time Automatically After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ ★ Score out the Chrome browsing history.

  23. After completing the solution, go back to your site and refresh it to check if the problem still persists. Remember, Android devices don’t allow deleting an SSL slate or a particular certificate. Still, facing the connection issue? Well, contact the expert to solve the server-side configuration problem. Also Read: How to restart the RDP without rebooting the windows server? ➢ ➢ How to Fix ERR_SSL_PROTOCOL_ERROR in iOS? ★ Ensure that the date and time of your local device are in automated sync. 1.To do this, Open the Settings app 2.Go to the General option in the settings 3.Click on Date & Time

  24. 4.Select Date & Time Automatically ON After completing the solution, go back to your site and refresh it to check if the problem still persists. ★ ★ Clean the cookies and cache from the settings. Open Safari or any other browser installed on your device to find & clean the history and website data. After completing the solution, go back to your site and refresh it to check if the problem still persists. Always remember the latest versions of Apple devices don’t offer the alternative of deleting the SSL slate from the device. Last Thoughts The error might look a little tricky and concerning, although each method is viable for troubleshooting the SSL connection error and will certainly solve the issue. Try opening the site that displayed the error after using any methods to cross-check the issue's status. Source - https://www.hostitsmart.com/manage/knowledgebase/264/Fix- localhost-sent-an-invalid-response-ERR-SSL_PROTOCOL_ERROR.html

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