Brother Printer Driver Causing Issue

[GracieM]

Running Win 11 21H2 and rec'd Memory Integrity Error. The model of my printer is MFC7840 DW. Found the problematic device drivers and all but one were for obsolete hardware I don't even own anymore. I used pnputil command and got rid of the offending software, but for BrUsblb.sys. That's the only thing left. In checking in Device Manager, I disabled the fax/scanner that no longer worked because of some problem with the OS and the lack of an updated driver. The printer itself works fine so I really don't want to screw it up as it's a real workhorse and has been so for many years.

However, I'm trying my best to figure out what to do next. It might not be a fixable issue, but I have several identifiers for the driver. The one from Brother appears to be prnbrc11.inf, 4/22/2009 10.0.171191. My printer test page shows Driver Type as Type 3-User Mode, Driver version 1.8.0.0. I went to the Brother site and looked for a driver for Win 11; there's a 64-bit driver for Win10, but I don't know nor can I tell how old it is. It might be that there is a Microsoft printer driver rather than a Brother driver because there are several entires, but I can't tell what each one does.

Device Manager tells me I have the proper driver. Can anyone advise what to do next so I can fix the Memory Integrity Error. The printer needs a software update that may not be happening. I looked for some support at the Brother site, but I guess my hardware is too old. TIA.

 

[davehc]

I had a similar problem, but not quite as extreme as yours. My final solution was to reinstall the printer in compatibility mode for Windows 7!

I made sure I had all the drivers ready in the installation folder - both the latest and any available for later Windows - even windows 11 if poss.

 

[GracieM]

Thanks so much for the idea. I wonder though will this procedure allow me to fix the Memory Integrity error? If not, then I might just let the issue stand because my PC and the printer do work okay. OTOH, did you have a fax/scanner that no longer worked and using this method got it to function?

 

[davehc]

I did indeed. Don't use the fax, but it was great to get the scanner back.

 

[GracieM]

I went to Brother, got the latest set of Win10 full driver pkg and I couldn't even get the thing to install, compatibility mode and otherwise. I got to the part where the program tells me to wait while it finishes the installation, and it never did. Fortunately, I had created a restore point before all this fooling around and my PC is back the way it was. All is well even tho' I used up 3-4 hrs of my life, for a 10 year old piece of hardware no less. ;-) Have a great day and thank you.