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usb2ser.sys: What Is It & How to Fix Its Errors
Discover verified solutions to fix things in no time
5 min. read
Updated onMarch 19, 2024
updated onMarch 19, 2024
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Drivers are meant to relay commands between the OS and the device they are related to, but it doesn’t always work. Often, users come across issues with drivers. And many recently reported that theycouldn’t enable Memory Integrityin Core isolation due to theusb2ser.sysdriver.
The error affected several users whoupgraded to Windows 11and were looking forward toturning on Memory Integrity. If you can’t do that, fret not! Keep reading to learn everything about the file and the solutions that worked for others.
What is usb2ser.sys?
The file,usb2ser.sys, is developed and published by MediaTek Inc. and contains the relevant data forUSB Modem/Serial Device Driver. And though there shouldn’t be a problem, the inability to turn onMemory Integritydue to driver incompatibilities raises some concerns.
Here are a few reasons you cannot turn on Memory Integrity due tousb2ser.sys:
How do I fix usb2ser.sys errors?
Before we head to the slightly complex solutions, here are a few quick ones to try:
If none work, move to the fixes listed next.
1. Update the driver
Often the quickest fix when it comes tousb2ser.sysand other such issues isupdating the driver. This will fix any corruption or missing files. Besides, if Windows is unable to find one, you can always downloadusb2ser.sysandmanually install the driverfrom the manufacturer’s website.
Alternatively, you could use a dedicated driver update manager which can detect all the outdated drivers and update them automatically without any system risks.
⇒Get PC HelpSoft Driver Updater
2. Rename the file
3. Repair the corrupt system files
When the Windows installation hascorrupt system files, you are likely to run into issues with theusb2ser.sysdriver. In this case,running the DISM tooland SFC scan should get things running.
4. Delete the usb2ser.sys driver
When nothing else fixes theCore Isolationissue, you can always deleteusb2ser.sys, after verifying that it’s not actively used by any devices connected to the PC.
5. Modify the Registry
If your sole aim is to enable Memory Integrity andusb2ser.sysstands in the way, modifying the Registry would do the trick. Remember, it’s not recommended that you take this route before exhausting all possible options.
After you have fixed the error, do not forget to check some quick tips toboost Window’s performanceand make it run faster than ever.
For any queries or to share the solution that worked for you, drop a comment below.
More about the topics:Driver issues,USB issues
Kazim Ali Alvi
Windows Hardware Expert
Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows PC. He’s specialized in hardware devices, always ready to remove a screw or two to find out the real cause of a problem.
Long-time Windows user, Kazim is ready to provide a solution for your every software & hardware error on Windows 11, Windows 10 and any previous iteration. He’s also one of our experts in Networking & Security.
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Kazim Ali Alvi
Windows Hardware Expert
Kazim is specialized in hardware devices, always ready to remove a screw or two to find out the real cause of a problem.
