BrusbSib.sys incompatible driver

the brother uninstaller must be used!

check whats written and oem.inf files are the ones to delete.

For my device MFC-L2710DW brother told the problem lays in incompatible old PC-Fax-driver.

so when custom-installing he big package(only) uncheck PC-Fax.
i wonder why all the askers didnt find my detailed solution. maybe its hidden here. but surely it elsewhere maybe google or brotherforum must recheck.

just had a windows reset made.printer was gone. reinstalled the package doing it right (disabled pc-fax) but the driver still blocked activation of core protection.

I should certainly had to use the brother uninstaller.

before that when printing a disturbingh popup of a brother-app or command nerved me. tellingh for a diagnosis which was not necessary. no clue why.
fact is after every installation a new version(numbered +1) of these oem.inf files will be generated. they must be removed.
hope everything is finding them. maybe one must enable hidden folders.

pity i cannot lead you to my older entries in forums. since i had a datacrash. inf-file is lost somewhere.

but i have a post in sysopt. dec 21. brother helped and told about the PC-FAX driver-issue.
Brother printer-driver BrUsbSib.sys(oem94.inf) blocking Core Protection-win10s. (sysopt.com)

Hello Good Day,

I also have the same problem recently so i tried to copy paste the code and observed that it doesn't change anything so I changed it maybe this will also help you KRM1970.

So here's how I change it. I put the specific published name of the file I'm getting rid of instead of oem21.inf. I just copy paste the published name of the said file from my computer's memory integrity report.

Hope this helps.

This solved the issue for me.

I had previously removed the Brother driver of my printer from Windows and also using the Brother un-install tool explained elsewhere but the following operation solved for me.

Open file explorer search for file : BrUsbSib.sys

I found it in a folder and noticed that in the same folder

(or one level above, I don't remember, now it's gone ...)
there was a file with extension .inf which seemed to give information about the whole group of files installed in the same folder : brpoc12a.inf

This file seemed to be a text file giving information about a driver installation (that included the faulty BrUsbSib.sys file)

I guessed that this brpoc12a.inf name could help me find the faulty driver in the Device Manager because I had noted that in Device Manager appeared names that had the . inf extension,
and yes it did.

I opened the Device manager as explained elsewhere and selected

Menu/View/Devices by driver

then I located the name : brpoc12a.inf

It was not in the driver name but in the parentheses of the driver name like : (brpoc12a.inf)

Then I right clicked the driver name and choose un-install. Then I restarted the computer.

Then I went to Windows settings / Device Security / Core Isolation, and enabled "Memory Integrity"

It worked fine.

Then I downloaded from Brother site the Package for installing my Brother Printer,

and installed the software.

All work fine now

Wow, didn't know you could view Device by Driver in the Device Manager, saw the driver oem's for brother using properties, deleted drivers, worked. Can't believe I tried command line, regedit, file searches, force commands, and even changed system file permissions to admin and none of them worked. Could see the files in regedit, just wouldn't allow deletions because 'system' files. Used to be able to delete in older OSs.

Thanks for the Device by Driver answer.