timestamp server cannot reached

Hi all, Hi Ulrich,

i have now again a question from Signing my Setup.
I have DL and Installed KSign. And create a cert. Now i like Sign my Setup.exe
but if i like Signing so i have a Error. Time Stamp Server cannot Reached. :huh

The url is: http://timestamp.verisign.com/scripts/timstamp.dll

why comes this Error ? :huh
Can any one help me ?

Thank you very much

Chris