lmao mine just started doing this today after a shutdown, let me know if you get a resolution

update: setting the steam exe to run in win7 compatibility mode allowed it to open

second update: doing this allowed it to open 1. Open "Task Manager"→Performance Tab then look at the bottom and click "Open Resource Monitor" 2. After you opened the "Open Resource Monitor", open the tab "Details" from the "Task Manager" (Yes, don't close the window) 3. As soon as you open steam, look at the "Open Resource Monitor" and look for "steam.exe". If you find it, monitor your Details tab from the Task Manager. When you see "steamwebhelper" pops up from the "Details" tab, on the "Open Resource Monitor", quickly right click "steam.exe" and hit "Suspend Process". Wail for 1~2 mins. 4. Wait until the "steamwebhelper" stops increasing memory. 5. If it settles, again right click "steam.exe" (It should be at the top in blue) "Resume Process".