Blank page with no content is displayed when trying to view the Microsoft Dynamics CRM 2013 Implementation Guide (IG) .chm file

I recently ran into a problem when trying to view the Microsoft Dynamics CRM 2013 Implementation Guide (IG) .chm file.

I was able to view the contents in the left hand navigation and also search for content, but I was only able to see a blank white screen on the right hand side.  This is because of a built in Windows security feature that's implemented on certain file types downloaded from the Internet.  This KB article has more details on this security feature.

I ran into a similar security problem with the CRM 2011 Implementation Guide, so it was easy to fix, but I know this could be troublesome for others as well.  So, I wanted to share this blog post with you in case you run into this issue.

I had to right click and go to the Properties of the .chm file and click Unblock.  Then I was able to view the CRM 2013 IG .chm file successfully.

Hope this helps!

Shawn Dieken

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Here are the detailed steps to resolve this issue:



1. Navigate to the folder you extracted the Implementation Guide files | Right Click on the .chm file | Select Properties.

2. Select the 'Unblock' button at the bottom of the General tab and then click OK.



You should now be able to view and search the CRM 2013 Implementation Guide chm file successfully.


Comments (36)

  1. Stephan van der Plas says:

    I am having this issue with all chm help files, but there is no Unblock button in the general tab of the properties window.

  2. Shawn Dieken says:

    Hi Stephan-

    I haven't run into this issue recently, so I am not sure if it's just my PC settings, or what is different for me.  I have seen that unblock missing recently as well.  Maybe another Windows resource can educate us more on that.  However, in the meantime it looks like you can still use PowerShell to unblock the file.…/how-do-i-unblock-downloaded-files  

    Hope this helps.



  3. M says:

    Works for me. Thanks!

  4. David says:

    Thanks a lot. saved me a lot of time

  5. Sachin says:

    Works for me

  6. HernanGaleano says:


  7. Rosalía says:


    tenía muchos días con este problema

  8. Guy LeBleu says:

    More often than not, this kind of problem has nothing to do with what is explained above, and is easily cured by simply moving the file to a different folder, with a simpler path.
    Try the following very simple test : drop a copy of your problematic CHM file on the desktop, and open it.
    If the file is normally constituted, it will most likely open normally and display its content correctly.
    That kind of problem occcurs for reasons related to the fact that the application handling chm files cannot reach the contents of the file. Take the case of a path such as “C;\something\book #1\helpful hints.chm”, which contains a pound sign. The presence of that symbol in the path will render the contents of the file invisible to the chm handler, even though you may see the navigation links in the left panel.

    1. brunetl says:

      Thank you! Moving it to C drive fixed the issue.

    2. Grima says:

      Guy Lebleu was absolutely correct. For me, this file was stored on a network share. Trying to open from the share, the content was blank. Made a local copy and the file opened and displayed fine with not having to alter any properties or permissions. Thanks!

    3. Tommy Hjertezén says:

      Guy LeBleu, you are so wise. Thanx, Simple logical solution when you think.

    4. Anjaneyulu reddy Kesaarapu says:

      Worked for me… Thanks,…

    5. GeerDad says:

      Thank you, Guy LeBleu. Copying my folder of CHM files (from another company’s help files) to my C: drive directly solved the problem. Our IT group has setup the My Documents location to be on our network file server and that seems to be what confused the CHM handler.

  9. Kim says:

    Thanks a lot! You are a life saver! 🙂

  10. Paul says:

    Thanks. Used this today to unblock a help file exhibiting the same issues.

  11. Paul says:

    Thanks. Used this today to unblock a help file exhibiting the same issues. The original solution, that is.

  12. Mark Schmitt says:

    Fantastic! Thanks!

  13. Eric says:

    Thank you for this. I never would have guessed this solution.

  14. Jose Florez says:

    Thank you! After following your instructions, I’m now able to see the ExtraPuTTY help file.

  15. Prashant says:

    Thanks, works for me

    1. writer0101 says:

      Unblocking worked for one of my users but using the shorter path (Desktop or C://) did not. I had rather not have to annoy my users with having to do the unblocking steps. When the developers build the installation package, is it possible for them to do the unblocking as one of the steps? If it is, what do they need to do to make that happen in InstallShield? Thanks in advance for any suggestions you have.

  16. Chris says:

    I can now successfully launch my problem file (.chm help file) from the local C drive. However, I am running software that necessitates a mapped network drive and launches this help file natively from a mapped drive. The PowerShell command, even when run as an administrator, is not resolving the issue when the file is launched from the mapped drive. Is there any way to get around this?

  17. sifat says:

    Thanks, worked.

  18. sam says:

    Thanks a lot !!
    This works for me

  19. shameem says:

    works for me. Thanks

  20. Siraj says:

    Thanks, it really helped

  21. Greg Hruby says:

    Using the CNM >(right click) > File Properties > Unblock doesn’t seem to work over the network. Only on the local machine.
    Unblock a CHM file on a mounted drive and it will still fail to display text in the right hand pane. Copy that file to local drive. It retains the Unblock setting and will now be readable in both the left and right panes.

  22. Dipta says:

    Thanks a bunch! that helped 🙂

  23. Fanendra says:

    Thanks, It work for me.

  24. havoc says:

    most useful page in the entire msdn

  25. Anbu says:

    Works for me too.. Thanks!

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