Mac OS Mojave Scanner Not Working

macOS 10.14.1 Mojave was released this morning after the hardware announcements. For those with printer issues try installing that update and see if your printer problems are any better. Not guaranteeing anything it’s worth a try.

It looks like a permission problem. The piece of software which tries to save the data is not allowed to do so. Most probably, this has to do with tightened sandboxing in Mojave vs. High Sierra.

Now the question is - what software is actually writing that data? My guess is that it must be in the Samsung driver, because I also have a Canon scanner working 100% fine with Mojave's Image Capture, while my Samsung CLX 3305 does not.

Guessing further, PDF files get created (but with garbage data inside) probably because PDF is a wrapper around the image itself, so the access problem happens somewhere hidden in the PDF creation process, whereas for more direct (JPG, PNG) formats, the error bubbles up to the surface.

So while tightened security enforced by Apple in Mojave is the change that makes the driver fail now, I'm quite sure the actual bug that needs to be fixed is in Samsung/HP's code.

I solved the problem in my Laser Lexmark using 2 different cable. USB cable for printer mode and Ethernet cable for scan mode(Image capture). Now, everything is working properly . I hope that may help you guys.

I stumbled onto a way to make my Epson 3750 scan. I went to System Preferences, selected Printers & Scanners, clicked on the Epson 3750 icon, selected scan, selected Open Scanner, clicked on Scan and it did.

You might also see this link. There is an updated driver that supports macOS Mojave.

https://epson.com/Support/Printers/All-In-Ones/ET-Series/Epson-ET-3750/s/SPT_C11CG20201

Thanks Recoseu - SDC seems to do the trick. Strange that the main printer driver is broken - you'd imagine that the two apps would use the same underlying scanner driver.

I have the same problem and I would like to add some more information so Apple can investigate the problem. The issue is the same using Preview or Image capture. I am testing this on a Samsung Xpress C480W (connected via wireless network). Communication with the printer/scanner is ok, Overview scan works correctly, actual scan also works fine but it fails at the end - only if Kind: Color is selected (Black & White and Text work fine). The type of error depends on the file format selected. For image formats such as JPEG, PNG the error is a generic "Scanner reported an error - An error occurred during scanning.". In the case of PDF, the file can not be opened by Preview. More precisely:

• if using Preview to scan the error message says: "The file Unsaved Preview Document.pdf could not be opened. It may be damaged or use a file format that Preview doesn't recognize."
• if using Image Capture, the file is saved but then it can not be opened by Preview (or QuickLook), resulting in the same error

I opened the file to inspect its contents and the file starts with "p l l D Kscanner.reflective.RGB.positive" which is not a valid PDF file header.

My guess would be that there is a missing conversion from the native scanner format to PDF or to the selected image format, such as JPEG, PNG or TIFF.

Apple are you listening? Please fix this!

Giulio

After I have updated to OS Mojave my lexmark 410de scanner is not scanning. Spent with Lexmark tech last 2 days , several hours. The final verdict MAC is aware of the issue and need to do upgrades to the system.

I wish I would never to upgraded to Mojave.

Sorry to bring you the bad news but Lexmark flat out lied to you. They are responsible for maintaining their software to stay up to date with Apple’s macOS, not Apple. Apple does not develop or maintain printer drivers. They provide drivers that have been furnished by the printer manufacturers. Almost everyone in this thread comment thread who is having problems are dealing with older printers. Lexmark’s own website indicates the drivers for your printer support macOS 10.12 and earlier. If Lexmark is unwilling to update its drivers to support macOS 10.14 (Mojave) then your beef is with them, not Apple.

Have you tired scanning with Preview or Image Capture?

Thank you for all of your investigation. Apple won't respond here, this is a users' forum. The best way to make sure Apple knows about this is to send feedback:

Feedback - macOS - Apple

What drivers have you installed? Apple's default drivers or some new/recent driver from HP/Samsung?

I use what works best; usually it is Apple, but there are third-party applications that I use instead of what Apple provides. VueScan, MapleRead SE, Firefox, iMazing, Google Maps, just to name a few.

I have an Epson 3200 which was not showing up in PhotoShop or AppleScan. It now works fine with a USB Cable.

Same here, Samsung SCX-3205W with MacOS Mojave.

Scanner is connected wirelessly. Problems are, as described above, with 'color' scanning, 'white&black' and 'text' modes work fine.

P.S. On High Sierra OS scanner worked perfectly with apple drivers.

I am having the same problems with scanning. I have tried using a Samsung SCX-4650 4x21s Series and a Cannon MF4700 Series with the same results, it throws an error code.

I was able to scan on the Samsung using the Black and White settings but still failed on a color scan. This problem has only happened since the OS Mojave upgrade....

I tried just now. Updated to official 10.14.1 (I'm coming form beta 5) and nothing is changed in relation to scan problem.
So We need at least to wait for 10.14.2, but seem that Apple would not fix this problem pointing the finger to manufacturer drivers problem.
I plan to return to High Sierra, due the only real news of Mojave is the Dark Mode the is not working fine too.