Probeer het eens via Chrome.

https://www.kpn.com/service/internet/veilig-internetten/kpn-veilig/kpn-veilig-op-pc.htm

Hi,

thanks for your reply but i cannot download it yet. I always have the same error.

Looks like the file is not on the KPN server.

Any other idea?

Thanks

Ja, probeer eens de browsegeschiedenis en cookies te wissen. 
 

Clean the internet-historie and cookies. 

Everything done. Even started chrome as administrator. Is it working for you?

For me it’s works.

But I have Safari with Catalina. 
 

Dis you allready Installed The Browser Extensie ? 

Hello @GiovannniM, welcome to our forum!
I've tested it on my personal chromebook with chrome and it veilig.kpn.com works fine for me! The download also works.
Could you try a private browsing window or a different browser such as firefox?

Sorry I confirmed as a good answer wrongly. I ll check and let you know.

Thanks

No problem, keep me updated!

It worked. Thanks a lot