Thank you guys for your response. I recreated the problem and saved the console and network logs. The network logs are saved as a .har file. I never heard of it, so I hope it is correct. As soon as I closed Kaspersky Internet Security, the problem was solved. So I believe it really is a bug in Kaspersky. The requested files are in a .zip, because I got an error that not all file types are supported by this forum. Regards, Pascal