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Canon scanner won’t scan – unknown error code = 19

This one had me stumped for a while. A Canon LiDE 110 scanner on a Windows 7 64 bit machine; worked fine while logged in as one user but not as another.

When trying to scan, to any location or with any output format, it popped up with a message saying “Unknown error. Code =19”.

Both users had admin rights, both had new profiles on the machine. The only difference was that the user it didn’t work for had redirected folders. Changing the scan location didn’t make any difference, it still gave the same error.

After some digging in the registry, the solution was to edit the following key

HKEY_CURRENT_USER\Software\Canon\MP Navigator EX\4.0\CanoScan LiDE 110\Folders\ScantempFolder

to point the location to C:\temp. The software was scanning to a temporary folder before outputting to the path the user had chosen, and the location it was trying to use was redirected and inaccessible.

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Piers Chipperfield

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12 responses to “Canon scanner won’t scan – unknown error code = 19”

  1. Tomas avatar
    Tomas

    Hello,

    I have a very similar problem on XP machine. I also use redirected folders.
    What registry keys you updated?

    Reply
    1. piers avatar
      piers

      Hi Tomas,

      I updated HKEY_CURRENT_USER\Software\Canon\MP Navigator EX\4.0\CanoScan LiDE 110\Folders\ScantempFolder to point to a location the user could access.

      Reply
  2. Tomas avatar
    Tomas

    Sorry, somehow I missed that line.

    Reply
  3. Tomas avatar
    Tomas

    Great. It worked on Windows XP machine for me. Thanks!

    Reply
  4. JJ avatar
    JJ

    Thanks, works great now!

    Reply
  5. Chang8306 avatar
    Chang8306

    Great – thanks for the hint – I had to change the Server Adress \\Server\Scanner to connected Drive like U:\Server\Scanner

    Reply
  6. yabz avatar
    yabz

    i have the same problem . i using canon lide 210 .

    Reply
  7. dcg1k avatar
    dcg1k

    THANKS A LOT!!!!
    i’ve been strugling with this bug since 2 years

    Reply
  8. How To Fix Canon Mp Navigator Ex Error Code 19 in Windows

    […] Canon scanner won’t scan – unknown error code = 19 … – Hi Tomas, I updated HKEY_CURRENT_USERSoftwareCanonMP Navigator EX4.0CanoScan LiDE 110FoldersScantempFolder to point to a location the user …… […]

    Reply
  9. How To Fix Scanner Error Unknown Error (-4523) in Windows

    […] Canon scanner won’t scan – unknown error code = 19 … – Hi Tomas, I updated HKEY_CURRENT_USERSoftwareCanonMP Navigator EX4.0CanoScan LiDE 110FoldersScantempFolder to point to a location the user could access. […]

    Reply
  10. Remi avatar
    Remi

    Thanks !!!! Work for me too.

    Reply
  11. Thoddy avatar
    Thoddy

    Thanks for your solution. I had the same problem on a Win 10 machine with a domain user. Changing the ScanTemp folder worked fine.

    Reply

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