In Windows Vista, Microsoft added the concept of “Network Profiles” to Windows. On paper, this is cool: Windows determines what type of network you’re on – your work domain, your home network, or a public network like coffee shop or airport Wi-Fi – and adjusts your security settings appropriately.
Except… it doesn’t always work.
Windows Server had a notorious bug where it would reset to a Public Network on every boot, thus disabling Active Directory, file & print sharing, DNS, DHCP, and everything else companies buy servers for. Angry IT guys eventually figured out a fix, all the while cursing Microsoft for adding the feature to Windows Server in the first place… after all, servers are likely to sit on the same rack or shelf their entire existence. No one’s taking the rack-mounted domain controller to Starbucks for a leisurely afternoon coffee.
My point is, if you’ve got a network share on your Windows 1x PC at home and it’s worked fine for years… but suddenly stops working even though everything else on your PC seems fine…. go to Settings > Network & internet and click on your network connection. Check that you’re on a “Private Network”.
Chances are, some Windows Update changed it to “Public Network” without you knowing. Change it back and your network share should start working again. If not, THEN begin the traditional troubleshooting. I can’t imagine how much time I’ve wasted in the past troubleshooting “network weirdness” only for the issue to be THIS damn thing! Now I always check this first!














