All Workspaces & Toolbars Disappeared

[#1]

I opened Illustrator to get to work on some graphics this morning and noticed my workspace was completely blank. No toolbars or anything.  When I click on one of the default workspaces, no toolbars load.  It will also only allow me to select the "Essentials Classic" workspace, no others.  I tried clearing my preferences with ctrl+alt+shift at startup but that did not work either.  I am running the latest version of Illustrator on Windows 10.  Never had this issue before.

[#2]

I opened Illustrator to get to work on some graphics this morning and noticed my workspace was completely blank. No toolbars or anything.  When I click on one of the default workspaces, no toolbars load.  It will also only allow me to select the "Essentials Classic" workspace, no others.  I tried clearing my preferences with ctrl+alt+shift at startup but that did not work either.  I am running the latest version of Illustrator on Windows 10.  Never had this issue before.

[#3]

when you press the TAB key, does that help?

[#4 · Accepted solution]

That was one of my first thoughts, but unfortunately that did nothing.  Tab didn't work, and none of the preloaded workspaces would do anything.

I uninstalled and reinstalled Illustrator once but chose to keep my preferences, and it still did not work. 

Ultimately, I Then I uninstalled and deleted my preferences and reinstalled, and now everything appears to be back to normal.  

[#5]

Same problem here (toolbars, controls and workspaces are gone) Toolbars and controls I can get back via Windows>Toolbars or Control, but workspace options is non responsive, stuck to my customized setting and not showing anything or being able to reload others. Similar thing happened 2 weeks ago as well with workspaces in new update 24.3. No updates was installed now, but I can't keep recreating my workspaces from scratch every 2 weeks. Is this is a bu that Adobe can fix asap?