>>>>My help stopped to work. clicking on a link opens a blank page. What that might be?
>>>
>>>Is it:
>>>
>>>

For the programmer, who can't access VFP help on the local machine?
>>>

For the end-user, who can't access your application's help over the network?
>>I am talking about my development environment. I can open help but no links inside of it works.
>
>And the help file isn't, perchance, on a remote computer, accessed over the network? A recent Windows security patch made those inaccesible by default.
Nope, it's a local file.