Downloaded a CHM file but can’t view it?
If you’ve downloaded a .chm file, but on opening it, can’t see anything, I have a solution for you
Ta-da
- Right click on the file > Properties
- Find the “Unblock” button, and click it.

- Re-open the .chm and it should now display properly


kifcaliph said,
4 May, 2008 at 12:58 am
here is an article explaining all the problems of .CHM files which may occur
http://www.drexplain.com/press/chm-files-the-page-cannot-be-displayed-error/
syam said,
26 September, 2008 at 8:02 pm
This is just great! I love you.
Jas said,
7 October, 2008 at 2:13 pm
hey! had been struggling for hours!
thanks for the gr8 tip!
guru said,
16 February, 2009 at 7:26 pm
solid answer
scifisi said,
4 October, 2009 at 1:31 pm
nice one!
khalid said,
22 October, 2009 at 9:19 am
U rrrrrrrrrrrrrrrrrrrrrr Greeeaaaaaaaaaaaat. Thanxxxxxxxxxxxxxx
p_m0045 said,
4 November, 2009 at 9:25 am
Thank you a lot, It did work
Sujay said,
18 February, 2010 at 4:02 pm
thanks a lot boss…
Nick said,
20 February, 2010 at 3:04 am
Hmmm…got the same problem (WinXP SP3) but there is no ‘Unblock’ button…:(
Bogdan said,
22 February, 2010 at 11:25 am
You are my hero! Thanks
Onlay said,
27 July, 2010 at 9:43 pm
thanks a lot!!!!
mrcmrc said,
21 October, 2010 at 11:42 am
Super super super super super thanks!
Steve Ballmer said,
23 November, 2010 at 12:53 am
The mind boggles. Where is the dialog to warn you when you open the chm? This is good example of the decline of MS products. They are so big one hand does not know what the other is doing. MS is well on their way to becoming the next IBM.
Phil Wiffen said,
23 November, 2010 at 12:02 pm
Poor UI design? Yes. Not entirely sold on this being an example of the decline of MS, though
Supernan said,
23 January, 2011 at 8:26 am
thanks a lot. It took me 3 hours about this “Unblock” problem you are great raise the roof
me said,
31 January, 2011 at 5:44 am
Thanks so much! Totally saved my day
Sharif said,
9 March, 2011 at 6:24 am
thanx
anupam said,
21 March, 2011 at 8:34 am
thanks a lot dear. you deserve it. i have deleted so many such files before just because I never knew this.
Caz said,
25 March, 2011 at 6:26 am
Just awesome! Thank you
Nalaka said,
3 November, 2011 at 3:22 am
Spot on. You post saved me lots of time. Thank you.
Makai said,
9 November, 2011 at 1:11 am
Waaaaaah…thanx a lot!!seeing the unbelievably simple steps, i feel like a total noob =.=…
Sudheendra said,
27 November, 2011 at 2:20 pm
awesome. u just solved my problem in a giffy. thanks a ton.
Darya said,
29 November, 2011 at 5:46 pm
Thank you very much i had a CHM file and did not view the text then i UNLOCKed it and now is working…….