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How to clear the custom spell check/AutoCorrect dictionary in Windows 10

posted Aug 10, 2015, 9:56 PM by Zhuowei Zhang   [ updated Aug 10, 2015, 10:05 PM ]
While typing Microsoft Edge, I accidentally added a misspelled word to my Windows 10 device's spellchecker custom dictionary, and couldn't figure out how to delete it.

Figure 1: I wanted to undo that action...

It turns out that Windows Phone 8 has an option to clear input personalization, but Windows 10 (and Windows 8.1/8, probably) didn't have one at all.

I had to look for the dictionary myself: they're stored in C:\Users\<my username>\AppData\Roaming\Microsoft\Spelling. I deleted the en-CA and the en-US folders, then logged off and on again. Afterwards, the incorrect word is no longer mistakenly recognized as correct.

Microsoft, why isn't this feature included in Windows in the first place?!

ps: Another fun input-related location to examine is C:\Users\<my username>\AppData\Local\Microsoft\InputPersonalization\TextHarvester - the WaitList.dat contains UTF-16 encoded copies of text you recently read to improve handwriting recognition.
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