Originally Posted by soundecology
I logged out of the user and logged back in and now everything is working as expected. Not sure what happened. Would welcome some insight. And hoping this doesn't happen again.
Seems like the desktop session wasn't fully loaded. I've had similar problems especially when resuming from sleep. A little investigation revealed lots of errors in event logs, pertaining to the Search process. My desktop would kind of lock up, right-clicking the taskbar would bring up the context menu, but couldn't click any of the menu items. Start menu would not show up, Ctrl-Alt-Del wouldn't load the security options, pressing the power button to shutdown would bring up the shutdown screen, but wouldn't actually shutdown. If task manager somehow opened, ending the Search process and restarting Explorer
fixed things. User profile corruption
seems to be a common problem on Windows 8 and higher. You definitely should consider migrating to a new user account, well I had to and it fixed a myriad of other mysterious problems that were affecting my productivity. You may also wanna disable fast start-up.
If you're using a third-party start menu, consider updating it to the latest version or uninstalling and installing the latest version available. If you haven't yet upgraded to the latest Windows 10 build (anniversary update), kindly do so. Review the list of third-party software on your system, especially those that include shell integration features (e.g context menus) and update as many as possible
. Recently I had to disable ALL third-party shell extensions
because explorer would crash and restart itself when i select an executable file and context menus would take several seconds to show up. Beware of Windows 10 compatibility issues with old versions of third party antivirus and other security programs. My clients have had the worst experiences with Kaspersky 2015 (2016 is fully compatible), especially cases of keyboard and touchpads not working right from the login screen! It's a lot of work trying out different solutions, and its even worse when your system decides to misbehave when you need to use it the most! Start with migrating to a new user account and see how it goes.