Windows XP SP3 will not install HP Printer Driver Invalid Digital Signature

[Yoshi11]

I have been losing my mind for 2 days trying to figure this out. I had a M281fdw printer and it installed ok in Windows XP, then it crapped out after about 4 years and I got an M283fdw, almost the same exact thing, but the driver will not install no matter what I seem to do. I have tried many fixes and certificate updates. The driver downloads in my windows 10 pc and shows a valid digital signature, but in XP it doesn't.

Is it possible to get this printer installed in XP? HP site has a driver for Windows XP 32, but it keeps giving me an error installing. When I look at the file properties it shows HP Inc. but no date for the timestamp. In Windows 10 there is a timestamp showing for the same file.

 

[j7n]

But on Windows XP digital signatures are not mandatory unless you have a restrictive group policy enabled. You can install through the device manager, it will warn that the driver is not signed and you may continue. The certificates are in a CAT file, which can be examined to find the root certificate and its date. If the CAT file is  removed, then the driver is considered unsigned and on XP you can install anyway.