BrusbSib.sys incompatible driver

Hello, KRM1970!

My name is John, and I am an Independent Advisor. I am glad to help regarding your Teams issue.

I also hope you are doing great aside from your concern today.

Please go to your Start menu and search cmd, right click Command Prompt and select 'Run as Administrator.

Paste this command into Command Prompt and press Enter:

pnputil /delete-driver oem21.inf /uninstall /force

Close Command Prompt, then restart (not shut down) your PC, and check if that driver is no longer a block on your PC.

Let me know if this helps!

__________________________________________________________________

*** Please note I am not a Microsoft worker, nor I don't have access to accounts and personal information

The INF filename oem21.inf is an ordinal number, that is assigned upon manual installation of a 3rd-party driver. The particular number depends on how many drivers you installed before the Brother printer driver. I mean: it is random, different from system to system. By advising people to uninstall this particular OEM INF #21, you're doing disservice to the people who don't know better and may uninstall something that's actually important to them.

The missing bit of clue is: how to find the INF file that contains the culprit Brother driver. And the answer is, you should do *this first*:

dism /online /get-drivers /format:table

This will tell you, which particular INF file is related to the Brother driver.

*then* you use the pnputil to delete that driver.

I tried all the above, to summarize:

1. Downloaded and Installed Brother software in full (i have an MFC-9340-CDW). Then uninstalled it. Restart, No difference.
2. Downloaded and install the Brother Device uninstaller. It expands to c:\downloads. Navigate to the directory and run it. It runs, doesn't show anything useful, completes. Restart, No difference.
3. Widows App uninstall programs. Remove anything if any related to Brother. Restart, No difference.
4. Went to Device Manager: removed the 'Brother Fax ...' from Print Queues. Restart, No difference.
5. In Device Manager, sort by devices by driver. There is no BrUsbSib.sys to be found.
6. Lastly, search for BrUsbSib.sys on the C: drive. Found in c:\windows\system32. Deleted manually. Restart, Worked!

I suspect that the Brother ultilities/device installer is too dumb to find the exact location and/or looking for a different file name. It probably did remove device drivers, but not that one. Feels like a bug to me.

Also, I do not recommend deleting various other drivers through device manager (oemXX.inf) unless you absolutely know its related to brother.

Just to make sure, you restarted your device, right?

If so, please try to delete or uninstall the driver from Device Manager.

1. Launch Windows Device Manager from Start Menu. If you can't find it, just simply search it.
2. Find the target device (for example, Mice and other pointing devices -> Synaptics Pointing Device). Right-click and select the Uninstall option.
3. If you are unsure where the BrusbSib.sys is, please try to expand all options until we find anything that's something to do with Brother.

Let me know if you have questions.

Whatever you had me copy and paste, it said it had been successfully deleted, but when I went back to the page with incompatible drivers, it is still there. So I’m not sure what was deleted. Ugh