The less idyllic side of working with computers - something what I thought to be a simple basic thing isn't working and I've already spent half a day troubleshooting, and have absolutely no idea what is wrong... So, let me tell a story; last summer my son installed a local web server for the milling company. He also developed some software running on the server. The system includes QR codes physically located around the production facility, and the workers have an android tablet to scan those QR codes - they decode as URLs pointing to the mill local server. The system has been running smoothly, and helps a lot with production-related logging and reporting, as data gets saved in their local database. To make full use of the system they recently bought a new device - this time a tablet running Windows 10. I installed a QR-code scanner for it, but then an automated windows update broke the camera functionality. After some googling around I found people had been reporting similar issues earlier, and following the suggested steps I managed to resurrect the camera by updating this and that drivers. So, the QR scanner app successfully reads the code, and decodes it correctly. But for some reason it fails to launch the browser. I tested with some other QR codes which are pointing to external, standard format URLs, and they work fine. So far it seems that the problem is only with URLs pointing to their local server. But if I copy the URL and manually paste it to the browser, it works just fine. I tested with three different QR scanner apps, and three different web browsers. They all behave the same; QR code gets read correctly, but it just won't launch the browser. I opened up windows command prompt, and typed "start http://xxx.xxx.x.x" where the xxx's are the address to the local server. And guess what? It successfully opens the default browser with the correct URL. I ran out of ideas. For some reason three different pieces of software consistently fail to do something which works fine from command line. After coming home I posted a question at three different forums - no helpful answers so far. But I learned there might be a QR-reader plugin for Chrome, maybe I'll try that tomorrow. Now, of course, if you ask me, I'd ditch the windows and keep on using android / linux - but on the other hand, I'm taking this as an interesting challenge. I know it should work, and I want to get it working. If forums don't provide an answer, and if chrome plugin fails, I think I might try a custom qr-reader with javascript. There seems to be an open source qr reader, so building on top of that I could see what goes wrong. (A commercial QR reader only says 'for some reason can't open URL' - and that is not so very informative error message.)