New
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Replace Windows 10 Cortana Search with Windows 8.1 Everywhere Search
In Windows 10, the Search app became Cortana and got its own tile and AppID, Microsoft.Cortana_8wekyb3d8bbwe.
Windows 8.1 featured a standalone Search app which was capable of running even when UAC is disabled. The Search app in Windows 8.1 is located inside the file %windir%\System32\Windows.UI.Search.dll and its resources are stored in the %windir%\SystemResources\Windows.UI.Search folder.
The Windows 8.1 standalone search link is included in Windows 10 at the following location: "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Search.lnk" The command for this search option is: %windir%\system32\rundll32.exe -sta {C90FB8CA-3295-4462-A721-2935E83694BA}
If you want to add this Windows 8.1 standalone search function to your desktop:
1. Rightclick the Desktop and select New > Shortcut.
2. Paste the following command in the "Type the location of the item" box:
%windir%\system32\rundll32.exe -sta {C90FB8CA-3295-4462-A721-2935E83694BA}
3. Enter a name in the "Type a name for this shortcut" box.
4. If desired, rightclick the desktop icon and select Properties > Change Icon to replace the desktop icon. You can browse the icons included in the shell32.dll file to select a search icon.
Now you have a new desktop icon to the Windows 8.1 Search Everywhere function.
Comments:
I found that if you go to C:\ProgramData\Microsoft\Windows\Start Menu\Programs and open the shortcut "Search", it opens the "Search Everywhere" feature from Win 8.1, and there all the apps appear, so it has to be a bug in the new search UI of win 10, and not in the indexing options.