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New Contributor
Posts: 2
Registered: ‎06-22-2020

CanoScan LiDE 400 won't work.

I just received my new CanoScan LiDE 400 tonight. It installed with no problems, turned on with no problems...but now I'm constantly getting the error message


"Cannot communicate with scanner for these reasons: 

-Scanner is turned off.

-USB Cable is disconnected.


Please check and try again. 

Scanner driver will be closed.


Code: 2, 156, 33."


I have tried EVERY "fix it" I've found on Google and nothing is working. I've changed my computer to Power Saver battery option -- didn't work. Changed the suspension on the USB port...didn't work. Yes, I'm using a 3.0 USB port on a Dell Inspiron 17 5000 series laptop. I have Windows 10 and I think that's the #1 problem --- Windows 10.

I've installed two different drivers that's supposed to work... didn't. I've installed it via the CD-ROM, didn't work...uninstalled and re-installed via the website... didn't work. Nothing is working. 


Should I just return the scanner and go with a different brand of product? I already have trouble with my Canon MG3500 series printer so.. I should have known better than to buy a Canon portable scanner. 

Product Expert
Posts: 776
Registered: ‎11-13-2019

Re: CanoScan LiDE 400 won't work.

Hi BreccaM1993.


Since the LiDE 400 uses the USB connection both for communication and for power, try plugging in the laptop to external power when using the scanner.  Usage of the USB connection when running on battery power can reduce the electricity (and thus also the USB signal strength).


Some USB 3 ports may have backwards comaptibility problems, so if the scanner still has trouble, try switching to a different USB port.


Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

New Contributor
Posts: 1
Registered: ‎07-06-2020

Re: CanoScan LiDE 400 won't work.

I see another person has had this code error which you gave advice to.


My problem is slightly different in that I am not using a laptop and so your suggestion is of no help to me. Also it was working fine for months and I was in the middle of scanning and it just stopped.


code: 2 156 33


Canoscan lide 400


Windows 10


I have tried all the suggested solutions on your 'error messages' page to no avail.


Please help.

New Contributor
Posts: 2
Registered: ‎06-22-2020

Re: CanoScan LiDE 400 won't work.

I finally returned my LiDE 400. Hoping they fulfill a refund. It just absolutely was not compatible with Windows 10, no matter what they said. I even posted a review telling others with Windows 10 to steer clear of the product and of course, they deleted it. I've had it with Canon.. the customer service has been horrendous, the products are getting worse as years go by.

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