Issue: How to fix BrusbSib.sys incompatible driver in Windows?
Hi. Memory Integrity is disabled because of incompatible driver BrusbSib.sys. I am using the Windows 10.
Memory Integrity is a vital security feature in Windows, designed to protect your computer from a range of threats by isolating core processes from the operating system. When enabled, it adds an extra layer of security, significantly reducing the risk of malicious software compromising your system.
However, a common issue that you might encounter while trying to enable Memory Integrity in Core isolation is the incompatibility of certain drivers. A frequent culprit is the “BrusbSib.sys” driver, which, when incompatible, prevents the activation of Memory Integrity. You'll typically encounter a message stating that “BrusbSib.sys” is an incompatible driver, and resolving this incompatibility is key to leveraging the full security benefits of Memory Integrity.
The “BrusbSib.sys” driver is often associated with Brother printers or scanning devices, and its incompatibility can stem from outdated or corrupt driver files. This situation arises when the driver isn't fully aligned with the demanding security protocols that Memory Integrity enforces. In scenarios like this, it's crucial to address the root cause of the incompatibility to enable Memory Integrity successfully.
To resolve this issue, one approach is to remove the software related to the “BrusbSib.sys” driver, typically software from Brother, which might be installed on your system. Alternatively, updating the driver to the latest version can also resolve the incompatibility, as newer driver versions are often designed to be compatible with the latest Windows security features.
If these methods don't yield results, a more technical approach involves force-removing the driver using Command Prompt or Autoruns. This method should be approached with caution, as it requires a certain level of technical expertise and can affect system stability if not done correctly. Lastly, if you're seeking a more hands-off approach to resolving other underlying Windows issues, consider using a PC repair tool FortectMac Washing Machine X9.
Fix 1. Update the driver for Brother software
Updating the driver ensures that you have the latest version, which is more likely to be compatible with Windows security features like Memory Integrity. Manufacturers often release updates to address compatibility issues and improve performance.
- Right-click on Start and pick Device Manager.
- Locate and expand the category related to your Brother device (such as Printers or Imaging Devices).
- Right-click on the Brother device and select Update driver.
- Choose Search automatically for drivers.
- Follow the on-screen instructions to complete the update.
- Restart your computer after the update is installed.
- If Windows fails to find any updates, you could download the driver manually from the official Brother website or employ automatic tools such as DriverFix.
Fix 2. Turn on Virtualization-Based Security in Local Group Policy
Enabling Virtualization Based Security (VBS) can sometimes resolve compatibility issues with drivers by providing an additional security layer. Note that this is not available for Windows Home users (unless alternatives, such as PolicyPlus, are used).
- Type Local Group Policy in Windows search and hit Enter.
- Navigate to Computer Configuration > Administrative Templates > System > Device Guard.
- Double-click on Turn On Virtualization Based Security.
- Set it to Enabled and click OK.
- Restart your computer for the changes to take effect.
Fix 3. Force-uninstall BrusbSib.sys driver via Command Prompt
You can use commands in Command Prompt to remove the incompatible driver resolving compatibility issues with Memory Integrity.
- Type in cmd in Windows search.
- Right-click on Command Prompt result and pick Run as administrator.
- When User Account Control window asks you whether you want to make changes, click Yes.
- Next, copy and paste the following command, pressing Enter after:
dism /online /get-drivers /format:table
- Your goal is to find the “Published Name” based on the “Original File Name” in the table. In this case, it should be “oem21.inf,” but it may differ in some cases, so verify it.
- Next, copy and paste the following command, and press Enter:
pnputil /delete-driver oem21.inf /uninstall /force
- Restart your system.
Fix 4. Use Autoruns
Autoruns is a tool that allows you to manage startup items and drivers. It can be used to disable or delete the problematic driver.
- Download Autoruns for Windows from the official website.
- Go to the Downloads folder or anywhere else your files are directed to be placed.
- Right-click on the ZIP file and select Extract to Autoruns and enter the folder once done.
- Select the right version: Autoruns.exe if you are using 32-bit Windows or go for Autoruns64.exe if you are using 64-bit Windows.
- Right-click on the correct EXE file and select Run as administrator.
- In the UAC window, click Yes.
- In the search box at the top, type the name of the driver that's causing problems, in this case – BrusbSib.sys.
- If any driver-related entries are found, right-click and select Delete.
Fix 5. Uninstall Brother software
If none of the above solutions worked, you can simply uninstall Brother software from your system, which should remove the incompatible driver. In order to fully remove Brother software along with the driver, you should download the Uninstall Tool from the official software website. Once downloaded, launch the tool and follow the on-screen instructions.
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