The latest security vulnerability was discovered inside both Windows 10 and Windows 11 letting any user access admin privileges inside the operating system. This can, of course, be used by a potential attacker to get full control of the system.
The problem lies in Microsoft's security rules assigned to the Windows Registry and the Security Account Manager. Both for some reason have reduced restrictions allowing any local user to fully access the files without administrator privileges.
The problem is even more amplified if we think about Security Account Manager which includes all account data including the passwords of all users using the same PC. This can provide a potential attacker with all information and let them log on into the administrator account for full control.
Microsoft is aware of the matter and is tracking it with code CVE-2021-36934, and includes a complete workaround for the issue, which includes restricting access to %windir%\system32\config and deleting any restore points or Shadow volumes that were created before that point until the hole is plugged with an official security patch.

“Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.”When this error occurs, your computer may freeze or display other suspicious behavior at times. Either way, there are several options you can check out in this post to resolve this issue, so read on. This kind of error could be caused by several factors. It could be due to your antivirus program or other third-party programs installed on your computer. It is also possible that the installation of the Microsoft .NET framework id corrupted or some of its installation files are corrupted. Thus, to fix the error, there are a few suggestions you need to follow such as:
Error CausesError Code 0x800703e3 is an error that arises on Windows 10, as well as on many of the past versions of the Windows operating system, dating back to Windows 7. It is an error that is associated with a number of different causes, and therefore, there are many different ways to attempt to resolve the error.
Common symptoms include:
In most cases, users experience Error Code 0x800703e3 when they attempt to install new software or upgrade their programs and operating systems on their Windows machine. Error Code 0x800703e3 is fairly simple to fix and many of the methods used do not require advanced computer skills or knowledge. However, if you have any difficulty in implementing the steps below on your device, it is recommended that you contact a qualified computer repair technician to assist you.
Error CausesAs there are many different things that can cause Error Code 0x800703e3 to appear on your Windows device, there are many methods that you can use to attempt to resolve the error. While many of these are easy to complete for basic users, some of the methods below require familiarity with advanced computing techniques. If you have trouble using the methods below, contact a qualified Windows repair technician.
Here are the top ways to resolve Error Code 0x800703e3:
The best place to start in resolving Error Code 0x800703e3 is to open up your settings for your drivers and check to see if any updates are necessary. After updating your drivers, it is important to restart your computer to allow any changes to take effect.
Secondarily, you can also run the Windows Registry Repair tool to see if there are any system files in your library that can be fixed, removed, or added automatically by the repair wizard. Again, it is important that you restart your computer after the tool has finished its scan and repair process to ensure that all necessary changes become fully active and recognized by the system.
If it has been a while since you last updated your software and operating system, open up the settings for your system updates. Always restart your computer after a system update has been completed to allow the necessary changes to take effect.
Remember that it is important to regularly update both your Windows operating system and your programs to ensure that there is not a backlog of updates to be completed. This can help to keep your computer in optimum health and eliminate future errors during installations and standard operation of your computer.
In some cases, the best way to address Error Code 0x800703e3 is to reinstall the Windows operating system on your machine. If the core issue of the error is that there is a missing or damaged system file, this is the best way to address the problem quickly and efficiently. Before you attempt to reinstall the Windows operating on your machine, make sure that all of your programs and information have been backed up in a secure manner so that you can restore these items after the installation is complete.
If you just began to experience the error after installing a new program, try removing the new program from your machine using the “uninstall” process, then restart your computer.
If you have any difficulty in completing the above methods on your own or if the problem has not been fully resolved using these methods, get in touch with a certified Windows technician who can help you to fix the issues at hand and get your computer up and running again.
Some Windows 7 and Windows 8.1 users reported experiencing a Compare Exchange128 error when trying to upgrade to Windows 10. The error reads, “You can’t install Windows 10 because your processor doesn’t support CompareExchange128”. In order to upgrade to Windows 10 (64-bit), the CMPXCHG16B instruction must be present. If you receive this error, this mostly means that your CPU doesn’t have the CMPXCHG16B instruction.
Error CausesThe CompareExchange128 error normally occurs due to two possible reasons:
One main requirement to upgrade to Windows 10 is for your CPU to have the CMPXCHG16b instruction. You also need the right BIOS version to guarantee a smooth installation. See below on how to manually fix this issue.
NOTE: If you don’t feel confident using the manual methods listed below, it’s highly advisable to get help from an expert technician. If you don’t know someone, you can also use an automated tool to fix this.
Before performing any fixes, try to determine first if the cause of the error is due to your CPU lacking the CMPXCHG16b instruction. You can use a CPU Info tool that provides complete details about your processor, memory, and motherboard. If you’re looking for more in-depth information, you might also try command-line utilities. But, the safest and easiest way to check this is by simply searching online. Try using the search query: <CPU Model> CMPXCHG16b
This method will download the latest BIOS from your motherboard’s manufacturer. This makes sure your CPU has the CMPXCHG16b instruction needed to complete the Windows 10 64-bit installation. To update your computer’s BIOS, complete the following steps:
If updating the BIOS doesn’t work, what you can do is install a 32-bit version of Windows 10 instead of the 64-bit version. Here’s how to do this:
If the above two methods don’t work, there’s a great chance that this error occurs because of an outdated processor/motherboard. Your next possible solution is to buy an updated model that’s fully compatible with 64-bit Windows 10.
If all else fails, you might want to consider using this powerful automated tool to quickly fix the problem and any other computer-related issues.
From the menu choose command prompt (admin)
In command prompt type sfc /scannow and press ENTER
Leave the computer for the operation to be completed and Reboot your computer
From the menu choose command prompt (admin)
in command prompt type: DISM.exe /Online /Cleanup-image /Restorehealth and press ENTER
wait for the process to be finished and Reboot your computer
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