They turn on their computer, and get greeted with a message. It reads “Windows cannot find 'dl1yff.de'. Make sure you typed the name. Compatible with Windows 10, 8, 7, Vista, XP and dl1yff.de problems can be attributed to corrupt or missing files, invalid registry. Make sure you typed the name correctly, and then try again. I updated Windows after I received an automatic notice of Windows update. And also at the same time, I had a message "Windows couldn't update all the files.". 0. 10, 0. May 20, #1. I recently updated to Windows 8 from 7, and now after the computer's been started up for about 2 minutes I get an error.