SSL enabled websites have HTTPS prefix, whereas those without it only have HTTP. How To Solve Failed to load resource: net::ERR_HTTP2_PROTOCOL_ERROR? Next, set Experimental QUIC protocol to disabled, like so. Before we take a look at some of the possible underlying root causes of ERR_SSL_PROTOCOL_ERROR, it would be useful for you to take a moment and recall any recent changes that may have been made to your site. Performance & security by Cloudflare. In this article, well explain what this type of error means and walk you through the steps needed to fix it to get your site back up and running! I am currently working on an .NET 5 & SignalR application and in localhost everything seems to be working fine. Anyone can self-sign a certificate and install it on a website. Clear Browser Cache and Cookies. Update your Internet Web Browser on your Windows PC , 12. Bypass this pesky error and access your website hassle-free with a little help from this guide. HTTPS is a secure protocol based on HTTP and is widely used as it has a number of significant advantages including improved SEO and a high level of security. As such, you might have to do a lot of troubleshooting to figure out where the problem is coming from. However, if youre unsure whether youre using a valid certificate, its worth re-issuing and installing one from a trusted authority. The output window showed this interesting clue. Temporarily disable Antivirus and Firewall (Sometimes these software might incorrectly block a secure connection). For example, if the certificate comes from a valid authority, the report will show this: You can also see who issued the certificate by navigating to the Issuer portion of the report. This may well give more insight into whats causing the issue. To disable Chrome extensions, click the three dots icon located towards the top right of the browser window and select More Tools > Extensions from the popup menu. When migrating a website to Kinsta, problems may arise when the DNS settings have been updated to point at Kinsta servers and the free SSL certificate from Lets Encrypt has been installed. Connect and share knowledge within a single location that is structured and easy to search. Once there, turn off Windows Defender Firewall like so. Have you moved hosts recently, or have you attempted to install new SSL certificates? Deaktiviert die Erweiterungen, am besten mit derjenigen beginnend, die ihr zuletzt installiert habt. A similar problem arises with generating an SSL certificate if the DNS settings have not yet fully propagated. Step 2: Move to the hosts file, right-click on it and delete the same. 2023 Kinsta Inc. All rights reserved. To do so, copy and paste the following line of code into your address bar. As a workaround you can use --public-host=0.0.0.0:0. | Disclaimer: We are not affiliated with the WordPress Foundation or Automattic, Inc. 502 Bad Gateway WordPress Error How To Fix It, How to Move Your WordPress Website from HTTP to HTTPS, Your devices date and time isnt correct, Your antivirus software is blocking your connection, There are bad or corrupted chrome extensions installed on your browser, The HOST files of the website you are trying to access have been corrupted. Centering layers in OpenLayers v4 after layer loading. One of them is net::err_ssl_protocol_error. Click on Advanced Scroll down till the Security section comes up. It is also recommended to erase browser cookies, but remember that you will need to log in the next time you access the websites you are now in. These tools do a great job of protecting you from all sorts of online security issues. Struggling with the ERR_SSL_VERSION_INTERFERENCE error on Chrome? This is to optimize page load times as otherwise, every HTTPS request would require the SSL certificate to be downloaded and authenticated which wouldnt be great for performance. On macOS click the apple icon and select About This Mac which will open a tabbed window: If a system update is available youll see a Software Update button. It means that your browser is not able to create a secure connection to a server. If it goes away, its indicative that the extension you last disabled or removed was the problem. Klickt im Startmen von Windows auf Systemsteuerung und anschlieend auf Internetoptionen. If youve ever experienced this error, you would agree that it can be frustrating. Were here to help as always! Methods to Fix & Solve SSL Connection Error Problem Issue, Click on the Menu option at the top right, Select and check the cache & cookies options to. Failed to load resource: net::ERR_FILE_NOT_FOUND ; 6. Unlike some other SSL-related errors, this message shows your website as being unavailable rather than warning users away from it: While this error persists, users wont be able to access your website. Some browsers enable you to bypass SSL errors, while others tell you the website is unavailable. (Suggested reading: if youre using legacy TLS versions, you might want to prevent ERR_SSL_OBSOLETE_VERSION Notifications in Chrome). Previously, the error would be received with every call. Once youve installed an SSL certificate, you must configure your website to load over HTTPS. I created #19406 as a separate issue since there could be a different issue with dotnet AspNetCore template and I don't want to hijack this thread, Thanks all for the input and all the users who provided the reproductions. By Deactivating, your antivirus may also quickly solve this site cant provide a secure connection ERR_SSL_PROTOCOL_ERROR Chrome code problem. All Rights Reserved. Deactivate the plugin then visit WordPress -> Settings -> General. row, : Step 3: Restart the website and check if this resolves the error. Step 1: Copy and paste into your chrome address bar the following line of code: chrome://flags/#enable-quic. There is no necessary to roll back visual studio code, Problem is actually OS-related . Nginx, 80808082 Some steps, therefore, focus on the settings for your local computer/browser, while other actions address server configuration issues and configuring the SSL certificate. However, you can try it out as your final resort if all other procedures fail.