Windows 10: PDF file type not recognized

Page 1 of 2 12 LastLast
  1.    07 Oct 2015 #1

    PDF file type not recognized


    It's PDF-A, I think.
      My ComputerSystem Spec

  2.    07 Oct 2015 #2

    Where is it not recognized?

    • When you double click it?
    • When you download it? If so in which browser?
    • By your virus scanner?
    • In your OCR software?
    • In Adobe Acrobat?
    • ...
      My ComputerSystem Spec

  3.    07 Oct 2015 #3

    all of the above except the OCR scanner is not relevant; the virus scanner has no problem with it & I believe Adobe Reader is what you meant & it won't read it. By the way, the file name is FIL#####.CHK
      My ComputerSystem Spec

  4.    07 Oct 2015 #4

    I see. So this does not affect all PDF files, but it affects one certain file.

    The file extension .CHK is used for several purposes. One of them is to store file fragments, that had been found during a disc check. CHK files are no PDF files. Maybe what a special CHK file contains, once was part of a PDF, but it can also be everything else.

    You can try opening the file with a text editor. What are the first 10, 15 signs, which you see then? If you are lucky, these signs actually come from the beginning of a file. If that is the case, then I will be able to tell you, which file type that actually was.

    Why do you think that this one file would be important? Do you miss something?
      My ComputerSystem Spec

  5.    07 Oct 2015 #5

    I am a volunteer at a non-profit charity. Both the real filename must match an *.tif file & the contents must match. It purportedly was converted from the TIF by a latest-1 authorized version of Acrobat. I have 1000's of this files to verify.
      My ComputerSystem Spec

  6.    07 Oct 2015 #6

    So you have a .tif file. That is an image file format. (And it is one of the formats, which can be used to convert a PDF into it: Using Adobe Acrobat, you can convert a PDF into a tif file.)

    And what else do you have? A second file, which must be identical to the tif? So a second tif? A copy?
      My ComputerSystem Spec

  7. DavidE's Avatar
    Posts : 357
    Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64
       07 Oct 2015 #7

    walkerpbus said: View Post
    It's PDF-A, I think.
    Maybe you just need to add a default program association for the "PDF-A" file extensions ?
    A search for pdf vs pdf a finds many articles that might help, such as this:
    PDF/A - Wikipedia, the free encyclopedia
      My ComputerSystem Spec

  8.    08 Oct 2015 #8

    I've got a more complicated problem, I think: File Explorer (FE) sees the file as FIL#####.CHK my task is to match the PDF's real file name to prove that we've converted a *.tif file to the pdf. When the FE creates the FIL#####.CHK, the file name can no longer be matched/compared to the *.tif file. :-((
      My ComputerSystem Spec

  9.    08 Oct 2015 #9

    I do not understand what the actual problem is.

    You have very many files and for each, the situation is the following:

    You have a TIF file.
    And you have a PDF file, which has been created out of the TIF.

    Now you say that Windows Explorer sees one file as a CHK file. Windows Explorer will only show files, which actually are there. So is the CHK file in fact the third file then - apart from the PDF and the TIF? Or do you in fact only have two files and one of the two files is named incorrectly? If so, which one is named incorrectly?

    Please answer my questions above!

    And what is it now that you want to verify? Is it the mere existance of a file (without checking the content) or is it that you believe that the file contents could be wrong and that you want to check them (which will be way more difficult)?
      My ComputerSystem Spec

  10.    08 Oct 2015 #10

    Only 2 files, the PDF shows up fine in Win 7, but appears as a CHK in Win 10. Yes to your final question. We converted a lot of TIF to PDF for a data base of archives. We want the final result to be PDF
      My ComputerSystem Spec


 
Page 1 of 2 12 LastLast

Related Threads
How to Restore Default Apps for File Type Associations in Windows 10 A default app is the program that Windows uses automatically when you open a particular file type or protocol. Default app associations for file extensions are a per user...
CD/DVD drive not recognized in Drivers and Hardware
I installed Windows 10 as an upgrade to Windows 8. My Dell laptop does not see the DVD drive. I had no success getting the drive to work in Windows 8 and (maybe of course) it doesnt see it now. This seems to be a common problem I have tried numerous...
USB device not recognized in Drivers and Hardware
I have a USB port on my motherboard that never worked. I had the problem with Windows 7 complaining about it, but something I did got Windows 7 to be quiet. Now I have Windows 10. Action Center is popping a steady stream - and I do mean...
Solved 64-bit architecture not recognized in Installation and Upgrade
Hello, I recently upgraded my Windows 8.1 64-bit laptop to Windows 10 via a clean install. Windows 10 installed the 32-bit version, even though I downloaded the 64-bit version of the upgrade tool. I attempted to upgrade to the 64-bit version...
I took a hard drive out of a laptop, connected via SATA to my motherbaord, added a letter to the data partition, and transferred well over 200GB of data to user files. When I finished the transfer, removed the letter, safely ejected the drive, and...
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 22:48.
Find Us