do I need winrt--{S-1-5-21-4232072523-28497201282035260167-1001|

Answer Desk just told me, 'You have to decide what you want to do with it'. Now, if you want that thing back, in all it's (humble) glory, simply re-install Windows 8.1 ~ the "update" from Start/Store, or your spanky new 'full version' DVD ~ weeeee!  But first, you better know what IT is.

Your executable -winrt-{S-1-5-21... folder is called SEARCH CONNECTOR, or SC. It gets tossed into C:\Users\username\Searches folder during the "update" from Win80 to Win81. Also, during the full 8.1 install. But it is not the real System Core CONNECTOR, that fires up your Search Gem. Your search connector is a virtual developers' App toy. It may also be connected to yet another effort by Pentagon to invite millions of Chinese hackers to spy on computers in the Americas: ref. 2008 Feb 18 node fiasco, still unresolved, not to dismiss any implications for European colonial interests impacting Region 3 users. For either scenario Public GUID is a shadily documented front-runner.

Let's just stick with the 'civilized' explanation here (uncontaminated with jingoism and war-murder games). Unless you are developing Apps, you don't need it. In fact, what we (Symantec, Asus, Intel and Microsoft) observed on this machine just yesterday, Jan 2 was a few seconds after accessing Web to install applications, some jerk (s) with trojan (s) started pushing into our SC's virtual connector environment, using the wide open development door put there by Microsoft for homey developers. You have to understand, we are talking virtual connector here, on typically EFI or UEFI platform with trillions of ops per second,, not some slow to the point of deranged and senile Windows 3.1/XP/7.

If you eat and sleep wires, you just swat the bugs aside these days, and whenever, reinstall the OS if it suits your code to have 'less' slimey bug guts (on a bad day). No big deal. Likewise, if you delete the visible instance of the toy connector in your Searches folder, this will not effect your all important Search Gem. You are simply removing a bug trap you most likely will not need... unless you're like me and eat-sleep-drink wires.

One other point to make. Security protocols cannot protect you from the unfettered insects that will crawl on board using your toy connector. Why? Because Windows gives this toy unfettered core access, appropriate to a GUID ticket holder. In other words, only Windows can say yes or no. Even system administrators can only dream about that kind of access, when they're not tweaking wires. 3rd party security apps? Dream on. For this toy connector, Windows always shouts, "Yes, Come-ON-in!"

Microsoft's jovial Spirit-of-Watson (Watson, the World's biggest 'in-America-now-public' supercomputer), Microsoft's take on the thing is this. If you don't understand the intricacies of machine level digital interaction, you most likely would never know the thing is even there. If you instinctively delete the visible instance, it is still there for the kids with bleeping manuals. But you just provided buggers one less wide open back door. Congrats. Just off the telephone with an Answer desk hero, and the indication is, the concept of a formal "WOULD YOU LIKE SYSTEM ACCESS TO PROGRAM APPS" style button before the thing becomes visible... well, that may be a better approach, for some. But your little Spirit-of-Watson toy is part of a system with trillions upon trillions of other minuscule, but to some equally glaring issues that need fixing first.

Enjoy the days of old brother Sun's returning light. Wado, fellow Americans, and Visitors.

I really enjoyed reading your description of the winrt doo hickey.  Having recently had to splat some little buggers crawling in the back door, I'm gonna go ahead and say good by to this one.  Until I need to format once again.  Thank you sir.

Steve

That string is a called a GUID (globally unique ID) which was either a user account, or process.  You do need it.  The best way to put it back is to restore it from a backup. 

Does something not now work?

In properties security tab I noticed above noted was listed as unknown. I deleted. do I need ? if so how do I put back?

One more thing we would like to mention, your search connector may change its numeric name. For example, tweak DiskPart to resurface your public, user and machine layers, and you will get a new GUID.

Wonder what that does to your web surface, double-triple-quadruple-quintuple personalities! Bet I could build 30 of those things before lunch today. What would Microsoft say, eh!

i think it is still there, but now it switches to my user name