I'm running Windows 10 Pro 64 on PC. Do you also need full version? 1903 (OS Build 18362.476)

I read an old thread with suggestions and explanations, and a forum suggestion the thread was very old and I might start a new one.

I've had my Canon Lide 25 scanner running perfectly for years. The Canon Toolbox software was for Windows 7 and 32 bit but has run all along on my 64 bit installation without problems. I don't recall but I think I installed it to run in compatibility mode.

I know Windows has caused this. I read an article in their Hardware Dev Center on twain of them announcing in 2017 that they no longer ship twain data sources with Windows and saying they only accept WIA drivers for scanners. Full dropping could not be far behind.

This was working until days ago. Someone in the old thread found that rolling back updates got their scanner to work.

Before reading that depressing Microsoft news in the Hardware Dev Center, I tried updating the driver, setting the path to make sure it's located, disabling, enabling, re-installing, everything.

Can anyone help with this NOW?

After my attempted re-installation, in the events for the device properties there are three events all with the same timestamp. They seem to be in this order:
ID 430 from Kernel-PnP
Device USB\VID_04A9&PID_2220\5&2effdc72&0&10 requires further installation.
ID 20003 with task category 7005 from UserPnp
Driver Management has concluded the process to add Service usbscan for Device Instance ID USB\VID_04A9&PID_2220\5&2EFFDC72&0&10 with the following status: 0.
ID 20001 Task Category 7005 from UserPnp
Driver Management concluded the process to install driver cnql25.inf_amd64_c16af4b8fc1a4b7f for Device Instance ID USB\VID_04A9&PID_2220\5&2EFFDC72&0&10 with the following status: 0x0.

None of them are Errors or Warnings. They're all Information Level events.

I'm assuming the driver installed. Am I wrong?

When I unplug and plug the scanner I hear the USB connection chime. and the usual whirring sounds like the scanner is initializing.

But when I click to scan something, I get the immediate popup:

Renewed Scanner unable to obtain twain source-clipboard01.jpg

Please any help?

- - - Updated - - -

OK, I finally got it to work. I tracked down the file locations and found that I had gotten the path wrong (added a directory that didn't exist). When I fixed that, everything worked again. It's hard for me to definitively say that was the problem though, because I had changed no path before it stopped working. Maybe a Windows update did that, I don't know. I went through so many steps with nothing working. I still don't see the latest driver that I got from the Canon site. Its information had a file version of 11.0.1.1a and a date of 12/20/2011 but the one installed says 11.0.1.1 and 9/11/2006. That's not the one I just installed. But it's working, so if it ain't broke, don't fix it.