What happened to my scanner El Capitan?

No I am afraid that they cannot simply issue a patch. For some reason it is due to an increased secrutiy level at root, introduced by Apple. Canon cannot start issuing patches designed to turn off security protection.

I read somewhere,where ? Now forgotten, that this new Apple security level can be turned off, if you are competent to fiddle with Terminal. However, that does not just make it possible to use a scanner, it turns off that whole level of protection.

As for the answer below that it may be a career move by Canon, well we have been having a lot of silly changes by Apple loss of optical drive, for example, flakey upgrades. If it is a career move for anybody, it is for Windows

After nearly 90 minutes of google and reinstaling I just found your post - 100% fixed my epson issue with the scanner. Or should I say my mac issue!

Thanks.

Just wanted to add this worked for me with my Epson Perfection 4490 Photo. Running fine on El Capitan on a Mid-2011 Mac Mini.

I pulled out my old Dell this weekend after El Capitan upgrade that lost photos and mail, screwed up printing, etc. I loved Apple for two years. Wish it was what it used to be.

In Image Capture v6.7, I don't see any command under the file menu that states Reset TWAIN devices.

I was trying to use my scanner through a USB hub. It did not work. The USB cord from the scanner had to be directly connected a MAC usb port.

My old Epson Perfection 1650 is now working with Image Capture.

One other thing. The image capture application does not work very well to call up the Epson scanner.

It is better to use the Printers & Scanners Preferences.

I had to download the Epson Software drivers for the Image Capture App. (ICA) from Epson's web site.

I then had to connect the scanner and wait for the App store to indicate an Apple update to Apple's drivers for Epson scanner/printers. I then performed the App Store update process for the Apple driver update.

I run a ScanSnap ix500 and had the same issue. After the update my Macbook wouldn't even recognize my scanner. Went to Fijitsu's website and had to download the drivers and run through the setup. Set me back about 45 minutes. You'd think as long as El Capitan has been out Apple would have this figured out by now.

Hi! Have the same problem with my Epson Scanner Perfection V370 Photo.
After 2 hours of trying stuff I could solve it by installing the Epson Software again Versión: 3.941 and also installing the Epson Scan Patch for OSX 10.11

https://www.epson.es/products/scanners/consumer-scanners/perfection-v370-photo#d rivers

I leave the comment here so it can be useful for someone with the same problem!

I thought I had lost my scanner so I suffer a bit :S

Had the same problem, but this tip File >Reset TWAIN devices. immediately made the scanner visible again

:-)

This is how I solved it:

1. Open System Preferences

2. Open Printers and Scanners

3. Select Scan

4. Select Open Scanner

5. Scan

This solution breaks down for me at "Step 3. Select Scan". There is no "Scan" to select in my Printers and Scanners System Preferences. All I have listed there is my 3 printers. How did you get Scan to appear?

Correction! I am now seeing my Scanner in the System Preferences | Printers and Scanners. I forgot that I have unplugged it from my USB hub due to a power warning. Not sure why I'm getting that warning since I purposely bought a powered hub, but that's a separate problem. DOH!

Good luck with that.