Windows Search no longer working after Anniversary Update

As the title says, my Windows Search has stopped functioning properly after the Anniversary Update.
I can click on the bar, and it will bring up an empty window, but as soon as I type in anything, it closes itself.

I've read up on some possible methods of fixing it, including restarting the Cortana process through the task manager, as well as fidgeting with the startup settings of the Windows Search service itself, but both to no avail.

There are multiple user accounts on this computer, and the others' seem to have properly-functioning search bars. I've thought about just moving my files to one of the other accounts, but there's 181 GB of stuff on my primary account and to me, transferring all that data is a little bit inconvenient just to have a functioning search bar. So, if at all possible, I'd like to avoid resorting to that method.

I'm at my wit's end....any ideas?

Hi there dalchina,

I am indeed referring to the Cortana search in the task bar. I've attached a screenshot of what it looks like when I click on the bar, but that doesn't really tell the full story, as it looks like it's functioning correctly until I try to actually use it.
I've also included a gif of what exactly happens when I do try to use it.

I'll try using that method you mentioned tomorrow morning and see if that works.

Well I tried using that re-registering method, and it didn't work. I tried using that code in both cmd and powershell and neither seemed to do anything.
However, in Powershell, it gave me some kind of error, maybe someone more familiar with this kinda thing can help steer me in the right direction?

I've already tried using the re-registering code in the cmd command prompt, and it still doesn't seem like it's solved the issue...

The last resort is to revert the Anniversary Update.

I suppose so, or I could just migrate my files over to another user account. Or maybe if I wait patiently enough some update in the future might magically fix it.