i recently deinstalled Fiddler and since that many of my apps on my Windows 10 machine are not working anymore. I checked proxy settings and made sure i'm not using a proxy. The only way these apps work again is when fiddler is running. This affects Adobe CreativeCloud as well as some other apps. Both browsers (edge and firefox) work fine, it appears apps using Libcurl.dll do not seem to get a connection anymore.