Firefox users will get the PR_CONNECT_RESET_ERROR message if they try to utilise the HTTPS protocol to connect to a website and their request is rejected. When you get this error, it signifies that your connection was abruptly closed, either by your peer or a middlebox (often a firewall).
Contents
Method 1: Turn Off The Filtering of Protocols (if Applicable)
It turns out that TCP protocol filtering is a common cause of this problem since it causes an interruption in the connection between the peer (you) and the server (you’re trying to access).
Most of the time, this is brought on by a too-cautious anti-virus suite that has Protocol Filtering turned on by default. This safety measure will ultimately examine all of your browser’s communications for vulnerabilities and prevent any unwelcome action.
When it actually does what it says it will, this is fine. However, certain antivirus programmes (most frequently ESET) are known to create a great deal of false positives, which will ultimately lead to users being blocked from visiting particular websites.
To turn off Protocol Filtering in ESET Antivirus, a popular third-party protection suite, take these steps:
Step 1: Launch the primary ESET anti-virus application.
Step 2: You can manually enter the Advanced settings or use the F5 shortcut.
Step 3: In the Advanced settings panel, select Web and Email first.
Step 4: Next, collapse the expanded Protocol Filtering section by clicking the corresponding slider bar next to Enable application protocol content filtering.
Step 5: After making the necessary adjustments and clicking Ok, you may test to see if the error has been fixed by revisiting the offending website.
If you’ve already confirmed that the PR PR_CONNECT_RESET_ERROR isn’t being caused by ESET’s protocol filtering, skip this step.
Method 2: Get Rid of Cache from Your Browser
It turns out that a temporary file can also be to blame when it comes to this problem because it prevents fresh connections from being established. The most common cause of this is using a virtual private network (VPN) and a standard Internet connection to reach the same web server at the same time.
If this is your current circumstance, deleting the Firefox cache should solve the problem. For help with the PR_CONNECT_RESET_ERROR, please refer to this brief reference:
Step 1: Before we begin, let’s make sure that every Firefox tab is closed except for the one we’ve just created.
Step 2: A drop-down menu will show when you click the action button in the upper right corner of the screen; from there, select Options.
Step 3: When you reach the Settings screen, choose Privacy & Security from the column on the left. Select Clear data from the submenu that appears after you select Cookies and Data.
Step 4: Uncheck the item labelled Cookies and Site Data inside the Clear data menu, but be sure to tick the option labelled Cached Web Content.
Step 5: To start clearing your website’s content data, select Clear.
Step 6: Try to force a system restart and see if that helps the problem disappear.
Method 3: Take Down The External Firewall (if Applicable)
If you dissect the error code, you’ll find that it’s really only trying to tell you that communication between the client and the server was temporarily lost. This is typically caused by a firewall that is set too high and causes connection drops when it detects something that isn’t actually malicious.
If you are using a third-party firewall in place of Windows’ built-in firewall and you are positive that the website you are trying to access is legitimate, you may want to look into whether or not the external tool is the cause of the problem.
Remember that deactivating the real-time protection of a firewall will not prevent this behaviour from occurring, contrary to the behaviour of an AV suite. The same safety regulations will probably continue to apply.
Only by temporarily disabling your third-party firewall suite can you be sure it is not the cause of the problem. How to make this happen is outlined below.
Step 1: Pressing the Windows key plus R brings up the Run dialogue box. Then, hit Enter after typing “appwiz.cpl” to launch the Programs and Features menu.
Step 2: Once you’ve gained access to the Programs and Features screen, you’ll want to scroll through the list of programmes until you find the third-party suite you’re using. When you find it, right-click on it and select Uninstall from the option that appears.
Step 3: Once you’ve found your way into the uninstall menu, just follow the on-screen prompts to remove the programme entirely.
Step 4: After the operation is finished, you may check that you haven’t left any files behind that could restart the problematic behaviour by following the on-screen instructions.
Step 5: When the process is done, you can restart your computer to see whether the problem goes away.
