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I noticed an EXE in SysInternals Process Explorer unfamiliar to me - MsSpellCheckingFacility.exe

It is related to IE10, which I recently installed on my Windows 7 x64 system.

Screenshots from ProcExp:

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From IE10 - select blue TOOLS button; "Internet Options" -
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For additional info on IE10 & Spellchecking in IE10 -

IE10 is standard on Windows 8; available for Windows 7 -