Blue Screen of Death errors or Stop errors are indications that something’s wrong with your computer. So when you encounter one, you must find out what the root cause of the problem is before it gets out of hand. One of the BSOD errors you might encounter on your Windows 10 computer is the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” error.
As you know, system files or .sys files are some of the essential parts of the Windows operating system. It is a repository of system driver settings used by the Windows operating system in order to communicate with the connected hardware and devices. They are essential for the normal functioning of the operating system. A lot of Windows 10 users are facing this particular Blue Screen of Death error whenever they open an app or disconnect external devices from the system.
The Netwtw04.sys file is a part of the Intel PROSet/Wireless Wi-Fi software. And so when you might encounter two kinds of Stop errors for the Netwtw04.sys driver file such as:
“DRIVER_IRQL_NOT_LESS_OR_EQUAL What failed: Netwtw04.sys.” – This kind of error message signifies that a kernel-mode driver tried to access pageable memory at a process IRQL that was too high.
“SYSTEM_THREAD_EXCEPTION_NOT_HANDLED What failed: Netwtw04.sys” – This error message indicates that the root cause of the error might be incompatible drivers with the operating system. In general, the root cause of the Netwtw04.sys BSOD error might be due to several reasons such as corrupted files, incorrect device driver configuration, malicious programs, outdated drivers, bad drivers, corrupted Windows Registry as well as some damaged or corrupted system files.
Whichever of the two error messages you got, you can try the troubleshooting options given below to fix the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” BSOD error.
Option 1 – Try to rollback your Network driver
If you have updated the driver software as of late and you suddenly got this BSOD error, you might have to roll back the device driver – in other words, switch back to the previous working version. To do that, follow these steps:
Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
Next, select the driver entries that are labeled appropriately other than anything in the context of the WAN Miniport.
Then select each one of them and double-click to open a new mini window.
After that, make sure that you’re on the Driver tab and if you are not, just navigate to it then click the Roll Back Driver button to switch back to the previous version of your Network adapters.
Now restart your computer to successfully apply the changes made.
Option 2 – Try to update the Network drivers
If the present Network driver is giving you a headache that is the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” BSOD error, then you need to update the Network drivers. To do so, here’s what you have to do:
Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
Then right-click on each one of the Network drivers and update them all.
Restart your PC and see if it helped in fixing the BSOD error.
Note: If updating the network drivers didn’t help in fixing the problem, you can also try to uninstall the very same drivers and restart your Windows 10 PC. After that, the system itself will reinstall the drivers you just uninstalled. Alternatively, you can also download and install the drivers from the manufacturer’s website directly.
Option 3 – Try running the System File Checker Scan
The SFC or System File Checker scan could detect and automatically repair damaged system files that could be causing the Netwtw04.sys failed BSOD error. SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files. To run the SFC command, follow the steps given below.
Tap Win + R to launch Run.
Type in cmd in the field and tap Enter.
After opening Command Prompt, type in sfc /scannow
The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:
Windows Resource Protection did not find any integrity violations.
Windows Resource Protection found corrupt files and successfully repaired them.
Windows Resource Protection found corrupt files but was unable to fix some of them.
Option 4 – Run the DISM Tool
The DISM tool is another command-line tool in the Windows operating system that could help users fix various corrupted system files. To use it, follow these steps:
Open the Command Prompt as admin.
Then type in this command: DISM /Online /Cleanup-Image /RestoreHealth
The DISM command you entered will repair the corrupted system image. Do not close the window if the process takes a while as it will probably take a few minutes to finish.
Option 5 – Run the CHKDSK Utility
Running the CHKDSK utility might also help you resolve the Netwtw04.sys failed BSOD error. If your hard drive has issues with integrity, the update will really fail as the system will think that it’s not healthy and that’s where the CHKDSK utility comes in. The CHKDSK utility repairs hard drive errors that might be causing the problem.
Open Command Prompt with admin privileges.
After opening Command Prompt, execute the following command and hit Enter:
chkdsk /f /r
Wait for the process to be completed and then restart your computer.
Each time you connect to a Wi-Fi network your PC saves that network password. If for any reason you need to see this password or passwords there are ways you can do it and we are here to show you how.
Hello and welcome to error tools where we aim to help you with all of your Windows problems and issues, where we offer our insight on various topics and sometimes go offroad and write something crazy. This time we will offer you a way on how to easily and quickly see how can you find out your memorized Wi-Fi password.
Find your W-Fi password
Make sure that you are connected to the Wi-Fi network you wish to find out the password of
Open Windows Settings app by pressing ⊞ WINDOWS + I
On the left side choose Network & Internet and click on it
Click on Advanced Network Settings
Inside Advanced Network Settings go to Related Settings
Select More Network Adapted Options
Right-click on your adapter and select Status
Click on Wireless Properties
Click on the Security tab
Click on enable on Show Character box beneath Network Security key to reveal Wi-Fi password
Changing Taskbar location in your Windows 10 is an easy task but lately, Microsoft has removed the option to just drag it to one side of the screen and place it there, now in order to change location we need to do a little more work but do not worry it is not difficult at all.
Right-click on the taskbar to open its properties menuin the menu, on the bottom choose taskbar settings. Once the settings dialog opens, on the right side locate the taskbar location on screen.
Click on the dropdown menu and choose the desired location for the taskbar.
Having a PC is a great thing, more often we are enjoying it than we have issues, but as time passes it seems that our computer is slowing more and more as new applications and games are coming which demand more powerful computers.
Before you decide to throw away your computer and buy a new one because you feel it is a bit slow, read through this guide where we will guide you to common tips & trick to make your PC run faster:
Keep your PC clean and tidy
Slowdowns and many other issues, even hardware failures can come from dirty PC. Make sure your PC is clean and tidy for maximum performance.
Optimize airflow through PC casing
Airflow is very important so your GPU and CPU and overall all hardware components can be kept in optimal working temperatures. If any device inside the casing is working in abnormal temperatures you will experience slowdowns and freezing on daily basis. Make sure that all fans are working and that your temperatures are in the optimal range to prevent overheating and make sure to have maximum performance.
Check PC for malware
Viruses, worms, and overall all malware can drastically reduce system performance. Make sure that your protection software is up to date with the latest definitions and that you have the latest Windows updates installed.
Create a Hi-Performance power plan
Windows power plans can be a very useful feature, especially if you are working on laptop but in order to boost performance and drain maximum, you will need to switch to a hi-performance power plan.
Free space on the system drive
Having little to no space on your Windows system drive can lead to extreme slowdowns, make sure that your hard drive is not on red when viewed from File explorer or you will experience even 50% poorer performance.
Choose startup applications
If you have many applications starting up with your Windows and many of them running in the background you will experience performance issues. Each application that runs in the background is taking RAM and CPU time for themselves which could be free and used for the program that you need.
Do not open too many tabs in Browser
Having too many tabs in Browser while working on a computer can also cause slowdowns, each tab is taking RAM for itself and even can cause Browser poor performance if a tab is LIVE and refreshing with new content all the time.
Remove browser extensions
Speaking of browser, having too many installed extensions which are active as soon as the browser is up and running can also lead to poor performances. Remove all which you really do not need and your computer will gain in speed.
Make hardware upgrade
Sometimes your system is just a little outdated, upgrading more RAM or switching to a new SSD with the greater speed can cause a world of difference in PC performance. Check to see how RAM is standard and upgrade accordingly, you can also upgrade the CPU and other bottlenecks in your system this way instead of completely buying a new PC.
Format and reinstall system
Drives, application traces, registry entries, etc. are piling up in your system over time, and if enough time is given it will clog your computer. From time to time it is a good idea to backup files and do a completely clean full format of HD and install a new and fresh copy of Windows with new and clean copies of applications and drivers.
That's it, 10 tips on how to make your Windows and PC perform better and speed it up. I hope that you found the read informative and helpful and I hope that I will see you soon.
One of the great remote assistance software that helps you remotely access and control computers is TeamViewer. However, despite how efficient it is, there are still times when it throws up some errors and one of them is when TeamViewer is not able to connect and throws an error that says, “No connection to partner, Partner did not connect to router, Error Code WaitforConnectFailed”.
This kind of error in TeamViewer mostly occurs when the Partner computer is not connected to a network. On the other hand, it could also occur when they are connected to a network so there are various causes for this issue. It could also be that the installation of the program itself was at fault or there is an incompatibility between the TeamViewer versions installed on both the computers and so on.
Although there are several causes for this error, the potential fixes are still the same. You can try to restart the network or allow Full Access Control to TeamViewer or flush the DNS cache. For more information, refer to the following options but before you proceed, make sure that both your Windows 10 computer and TeamViewer program are updated to their latest stable versions.
Option 1 – Reboot your router
The first thing you can try to do to fix the error is to simply restart your router. All you need to do is reboot the router from its Admin panel or you can also turn it off manually and turn it back on after a couple of seconds so that it can completely reboot. Once you’re done, try accessing your server again and see if the error is now fixed.
Option 2 – Allow Full Access Control to TeamViewer
First, open TeamViewer, and then from the Menu bar, click on Extras.
After that, click on Options and select Advanced from the left side navigation panel.
Next, click on the “Show advanced options” button located on the right-hand side.
Then select Full Access from the drop-down menu of the Access Control option under the “Advanced settings for connection to this computer section”.
Now click OK and check if the error is now fixed or not.
Option 3 – Try to flush the DNS configuration
You could also try to flush the DNS configuration in your computer to fix the error. How? Refer to these steps:
Tap the Win + X key combination and click on the Command Prompt (Admin) option or you could also search “cmd” in the Cortana search box and right-click on Command Prompt from the search results and select the “Run as administrator” option.
After opening Command Prompt with admin privileges, enter each one of the commands given below sequentially in order to flush the DNS cache.
ipconfig/release
ipconfig/renew
ipconfig/flushdns
Now type the exit command to close Command Prompt and then restart your computer and see if the problem is fixed.
On the other hand, you could also try to reset Winsock as well as the TCP/IP.
Option 4 – Run the Network Adapter troubleshooter
To run the Network Troubleshooter, refer to these steps:
Open the Search bar on your computer and type in “troubleshoot” to open the Troubleshoot settings.
Next, scroll down and select the “Network Adapter” option from the right pane.
Then click on the Run Troubleshooter” button.
After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.
Restart your computer.
Option 5 – Try to perform Network Reset
You might perform a Network Reset to resolve the problem if none of the four given options worked. This will reset the entire network configuration including your IP address. To perform Network Reset, follow these steps:
Tap the Win + I keys to open Settings.
From there, go to the Network and Internet section.
Next, scroll down and look for “Network Reset” under the status pane.
After that, click on Network Reset and then on Reset now to start resetting the network configuration. Once done, check if it is able to fix the error or not.
There are instances when the Windows 10 installation needs interaction before it reaches the file process. And so if you suddenly encounter the Windows Update Installation Failure 0x80240020 error under the Windows Update History, then you need to get it fixed.
When you encounter this kind of Windows Update Error, you will see an error message that says, “The operation did not complete because there is no logged-on interactive user”. This error also indicates the “WU_E_NO_INTERACTIVE_USER” code. To resolve this issue, in this post we’ll walk you through a couple of steps but before you get started, know that you don’t have to run any troubleshooter or delete any file just to fix this error since all you have to do is enable one option that can automatically login with your account and complete the installation for you. With that said, just make sure to only try running Windows Update once you’re told to do so.
There are two ways you can enable the option that could resolve the Windows Update Installation Failure 0x80240020 error. One is via Settings while the second one is via Registry Editor.
Option 1 – via Settings
Step 1: Go to Settings > Accounts > Sign-in Options.
Step 2: From there, toggle on the “Use my sign-in info to automatically finish setting up my device and reopen my apps after an update or restart” option.
Step 3: After that, it will make sure that the interaction part is removed from the Windows Update process.
Note: If your device is joined in a domain or if some work or email policies are applied to your device by your company or organization, then you wouldn’t be able to see this option in Settings and that’s where the Registry Editor comes in. Just make sure that you’re logged in as an administrator and that you create a System Restore Point first since registry hacks are sensitive and could highly impact how your computer behaves or functions. Once you have that covered, follow the steps below.
Option 2 – via Registry Editor
Step 1: In the Start search, type “Regedit” and hit Enter to open the Registry Editor.
Step 2: Navigate to the following registry key:
Note: If the above-given registry key does not exist, you can simply create it. All you have to do is right-click on the WindowsUpdate key and then select the New Key option and type “OSUpgrade” as its name. Afterward, create a new DWORD (32-bit) Value and name it “AllowOSUpgrade” and set its value to 0x00000001.
Step 3: Restart your computer and check if the error is now fixed. And then try to update your Windows 10 computer again and while you’re at it, make sure that you’re around your computer to interact with the prompts needed to complete the installation process.
You have probably heard a lot of good things about gaming mice, how they are better feeling, better in any way possible and it is all true, everything you heard is actually true, they are superior in any way to a regular mouse but with one big disadvantage, and that would be the price. While you can find a regular mouse for pocket change, a gaming mouse is in comparison very expensive even for entry-level ones.
In this article we will explore all advantages and compare it with the regular one so you can come up with your own conclusion about do you really need one for yourself or if you are fine with regular.
Price
As stated price is one factor that does not favor gaming mice. Regular mouse for a personal computer goes around 10 or 20 USD, while entry-level in gaming one will be 40 USD and can go up to 250 USD, this large gap in price is usually determining factor why people pick up regular one. If you are on a really tight budget go for the regular one, but if you can afford a gaming one get it without second thoughts.
Software
This is where you will see the big difference between mice. Regular ones when connected are recognized and the driver is automatically installed and you can use it, same goes with gaming ones but with one big difference, you have an option to install additional manufacturers' software specially tailored for your mouse. In the application, you will be able to access some features that are specific to the mouse model that you could not set in typical Windows mouse properties. Beside more options software can also have features like setting your profiles and saving them to be recalled when you need them on the fly.
Sensitivity of mouse
The sensitivity of the mouse is measured in dots per one inch or short DPI, this is directly shown on your screen by how fast your mouse can move, higher sensitivity means your mouse will move faster across the screen and lower means it will move slower. All gaming mice come with buttons and settings that will allow you to change DPI on the fly and you can choose precise DPI settings in the software.
The regular mouse comes with DPI around 800 and goes to 1200 typically and does not have usually the option to change this while gaming mice start at 400 and can go as high as 26000 with the option to change it. Some regular mice can have only 1 option of DPI, usually very cheap ones.
Polling rates in mice
Pooling rate is the measurement of how often your mouse reports where it is positioned on the computer. The higher the pooling rate, the more responsive your mouse will be and vice versa. It is measured in hertz (Hz) and regular mice have them around 125Hz that is enough if you are using a computer for office, internet, and mail work.
If you are working in design or gaming you will need more than 125Hz polling rate, luckily gaming mice come with a minimum of 500Hz as an entry point and some hi-end models are going as far as 8000Hz. This very high pooling rate will get some extra load on your CPU but the mouse itself will be maximally responsive and will respond even to the smallest moves.
Ergonomics
Regular mice are well just mice, they are typical shape and size, gaming mice are made with ergonomics in mind. How they are made for extensive daily use of several hours per day they are constructed in a way to offer a pleasant and pain-free experience.
If you work on a computer for long periods of time consider gaming an ergonomic mouse since it will take the strain from hands and place them in a more natural position.
Macro keys
Gaming mice most of the time come with more keys compared with regular ones and good thing is that via its software you can tie certain actions to these extra keys making work or gaming more pleasant and quicker.
Components and material quality
In order to make regular mice more affordable and cheaper materials and quality of components had to suffer. Gaming mice have millions of guaranteed clicks by companies that make them before they break and regular ones usually do not guarantee a single one. This is due of course quality of materials that have been used in constructing these devices.
In the long term, if you use a gaming mouse for typical daily tasks it will outlive your regular one and on the side offer you more pleasant and responsive use along the way.
Windows Vista had in it animated wallpapers on desktop but sadly how they were heavy on system resources Microsoft abandoned the idea. Moving forward a couple of years later we have Windows 10 but still, we do not have live animated wallpapers. Since I am the kind of person who does not want to wait on Microsoft and now it is time to bring animated wallpapers back I am going to make one all by myself and you are welcome to join the ride and do the same for you as well.
Enough talk, let's dive into how we can make animated wallpaper for our Windows 10.
Choosing the application
First, we will need some form of application which can we look at our animated wallpapers and since they are animations it means video, so we will need a video player and what better choice than a VLC player, an open-source light weighs all-format player.
Get a VLC player from here and install it.
Finding video source
The next thing is to of course have some looping video that we will use as background. There are many sites and ways to get seamless loop videos, I use this youtube channel for my backgrounds. Altho you can use any video footage you want it is recommended that it is not too long, that it is hi-resolution so we do not have pixels on-screen, and if you can, get it as seamless since we do not want to see stutter when the video is lopped from the beginning.
So hopefully you have desired video and VLC player installed.
Putting it all together
Copy the following code and paste it into your search bar in Windows to open the Startup folder, or navigate to the Startup folder yourself via file explorer if you know where it is.
%appdata%\Microsoft\Windows\Start Menu\Programs\Startup
Now, next thing is to copy and past the VLC shortcut into this folder so it is started when Windows is first time booted.
Right-click on the shortcut and in the edit field paste this:
"C:\Program Files\VideoLAN\VLC\vlc.exe" --video-wallpaper --qt-start-minimized --no-qt-fs-controller --repeat --no-video-title-show --qt-notification=0 "C:\videopath\filename.mp4"
where "C:\Program Files\VideoLAN\VLC\vlc.exe" is the path where VLC is installed, point this to where you have installed it
"C:\videopath\filename.mp4" is the path where you have your video that you wish to use as animated wallpaper. Please note also that in my case there is mp4 as an extension but it does not need to be mp4, just use any extension VLC can open and play.
Conclusion
And that's it, you have successfully made an animated background or live wallpaper on your Windows 10 computer. You can change your wallpaper anytime by editing shortcut and giving it a new path to a new video or simply overwrite the existing one with a new baring same name.
What is Out of Memory error while copying files? As you know, both the hard drive and RAM play a major role in performing any operation on a computer since every process or task that takes place in the system requires some RAM storage as well as hard drive storage to be executed. However, there are times when you may receive the following error messages when you try to copy files from one location to another:
“Out of memory or system resources, Close some windows or programs and try again.”“There is not enough memory to complete this operation – copying files.”
These errors are caused by the Desktop Heap limitation when there is no longer enough memory to complete the operation while copying the files. If you encounter any of these errors, you will be guided in this post with the help of some potential fixes that can increase its limit and will hopefully fix this error on your Windows 10 computer.
You may try to close all the open windows and programs and then try copying the file again and see if that helps. If not, then proceed to the instructions given below. But before you do that, make sure that you create a System Restore point first. This way, you can undo the changes you’ve made any time in case there are some unwanted changes you want to reverse. After you create a System Restore point, refer to the steps provided below.
Step 1: Tap the Win + R keys to open the Run utility and type “Regedit” in the field and tap Enter to open the Registry Editor.
Step 2: Next, navigate to this registry key: ComputerHKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSession ManagerSubSystems
Step 3: Now double click on the DWORD named Windows to modify it.
Step 4: Change the values for SharedSection in the Value Data field. It should be in the format of “SharedSection=aaaa,bbbb,cccc”. Note that you have to change the value of “bbbb” and “cccc”. So in case you are using an x86 operating system, set the value of bbbb to 12288 and then set the value for cccc to 1024. On the other hand, if you are using an x64 operating system, set the bbbb value to 20480 and the cccc value to 1024.
Step 5: Exit the Registry Editor and restart your computer to successfully apply the changes made.
Note: The bbbb value in the SharedSection registry is the size of the desktop heap for each interactive window station while the cccc section of the SharedSection value is the size of the desktop heap for each non-interactive window station. In addition, you must keep in mind that setting the value of bbbb to more than 20480 KB is not really recommended.
On the other hand, there is another tool that could help in resolving the Out of Memory error. This tool is called the Memory Diagnostic tool in windows can help resolve the Out of Memory error by checking and automatically fixing any memory-based issues. To run it, refer to these steps:
Tap the Win + R keys to open Run and type mdsched.exe and hit Enter to open the Windows Memory Diagnostic Tool.
After that, it will give two options such as:
Restart now and check for problems (Recommended)
Check for problems the next time I start my computer
Once your computer has restarted, perform a basic scan or you could also go for the “Advanced” options such as “Test mix” or “Pass count”. Simply tap the F10 key to start the test.
Note: After you select your preferred option, your computer will restart and check for memory-based issues. If it finds any issues, it will automatically fix them.
Error Code 0x80240016 is an error that appears when the Windows Update tool is unable to complete its operation. While it most commonly occurs in Windows 10, versions of this error are also present in past Windows systems, as well. The steps to resolve the error are the same for each of these systems.
Common symptoms include:
Inability to complete the Windows Update process
Sluggishness or freezing
Crashing of your programs
The message that states “IMAP_LOGINFAILURE”
There are a number of different issues that can cause Error Code 0x80240016, so it is important to follow the steps below to address each of them in turn. While basic users can implement several of the methods, some of the methods may require advanced skills or knowledge.
If needed, always get in touch with a qualified Windows repair professional to assist you in the process of error resolution.
Solution
Error Causes
Error Code 0x80240016 happens when the system believes that another installation is already occurring on your device while the Windows Update tool is attempting to run the installation of its own updates. While there may not always be an actual installation going on that prohibits Windows Update from running, several programs can leave traces of background activity that prevent Windows from proceeding as necessary.
Malicious software can also cause your system to believe that files are in use, so several of the methods to fix the error can address this particular set of issues.
Further Information and Manual Repair
There are a number of different background issues that can cause Error Code 0x80240016 to appear on your machine. Follow the steps below to address each aspect of the error code, making sure to restart your computer after each attempt. If you have difficulty in completing these steps, contact a qualified technician to assist you.
Here are the top methods to resolve Error Code 0x80240016:
Method One: Use the Troubleshooting Tool in Windows Update
The first step to addressing Error Code 0x80240016 is to open up the Windows Update tool and click on the option to run the Troubleshooting Wizard. This can identify many of the issues associated with the error. If this tool makes any changes, make sure to restart your computer after it finishes.
Method Two: Run the Registry Repair Tool
The registry repair tool can be a great resource for Error Code 0x80240016. Use it to run a scan on all of your registry entries and to repair any that may be extraneous, faulty, or missing. This step may take some time, so be prepared to wait a while for it to finish. Always restart your computer after running the registry repair tool so that any necessary changes can fully take effect and be recognized by your device.
Method Three: Scan Your Computer for Malicious Software
Use the Microsoft Security Essentials tool to perform a scan of your computer to see if any malicious software has changed or corrupted your system files. Once all the files had been scanned and problems have been addressed, you can restart your computer to see if the error has been successfully resolved. You can also download a powerful automated tool to rectify Windows 10 error code 0x80240016.
Method Four: Update Your Drivers and Perform Updates for Your Software and Operating System
Another method that can help to address Error Code 0x80240016 is to open up your driver settings from the control panel and scan to see if any updates are needed. If there are updates waiting to be installed, go ahead and perform those updates first, then restart your computer.
Next, check your Windows Update tool to see if there are any program or system updates that need to be performed. Allowing updates to stack up can cause a number of errors on your system, so it is important to keep your updates in check. Restart your computer after you finish this process.
Method Five: Backup Your Files, Then Reinstall Your Operating System Version
If none of the above methods have completely fixed the problem, you may need to reinstall your operating system. Before doing so, make sure that you have a backup copy of any important programs and files so that you don’t lose anything during the fresh installation.
If you’re having some problem browsing multiple websites on the Firefox browser on your Windows 10 computer, then this post might be of help. One of the most common problems you could encounter in Firefox is mostly related to HTTPS and one of them is the MOZILLA PKIX ERROR MITM DETECTED or ERROR SELF SIGNED CERT or SEC ERROR UNKNOWN ISSUER error which means that Firefox was unable to trust certificates issued on secured websites.
If you encounter the MOZILLA_PKIX_ERROR_MITM_DETECTED error in Firefox, this indicates that something in your network or system is interrupting your connection and injecting certificates and when that happens, Firefox won’t trust it. In such cases, one of the culprits is malware. Malware will try to replace a legitimate certificate with its certificate. Another cause is security software where it keeps a tab on a secure connection and creates a false positive, for instance:
“In Microsoft Windows accounts protected by Family Safety settings, secure connections on popular websites like Google, Facebook and YouTube might be intercepted and their certificates replaced by a certificate issued by Microsoft in order to filter and record search activity.”
And if you are connected to a corporate network, there might be a monitoring/filtering product that could be replacing certificates. Moreover, there are also users who reported getting this issue when they use the Nightly version of Firefox. And if that’s the case, you have to try accessing secure websites using only the stable build especially when it comes to payments. However, if you are not doing that, then here are some options you need to check out.
Option 1 – Try turning off HTTPS Scanning on your security and antivirus programs
Each security-based software has a security option that allows you to turn off the HTTPS scanning functionality. They may be available under different names such as HTTPS Scanning, Scan SSL, Show safe result, Do not scan encrypted connections, etc. Find what is applicable for your security or antivirus software and then try turning it off temporarily and see if it helps in fixing the MOZILLA_PKIX_ERROR_MITM_DETECTED error in Firefox.
Option 2 – Try to disable security.enterprise_roots.enabled
The next thing you can do if the first option didn’t work is to disable security.enterprise_roots.enabled which is an HTTPS certificate check on Firefox. Note that this is not recommended but you have to at least try in order to fix the error.
Open Firefox and then type “about: config” in the Firefox address bar and hit Enter.
After that, if an info message appears, confirm it.
Next, search for the security.enterprise_roots.enabled preference and once you found it, double click on it.
Then change its value to true and restart the Firefox browser once. This will import all the custom certificates from the other security software into Firefox. As a result, it will make sure to mark those sources as trusted and you won’t get the MOZILLA_PKIX_ERROR_MITM_DETECTED error.