Hi and welcome to the Forum.
If you've done as you stated, and toggled all the options on via Settings | Devices | Typing, then that will mean you also toggled to the on position
Autocorrect misspelled words.
Assuming that is turned on, then the red squiggly line you are seeing will only offer up an option or options, if there is a correctly spelled word inside the Dictionary file itself. If the word underlined with the red squiggle, is in your mind correctly spelled, you can
right-click on it and select
Add to dictionary to improve the Dictionary file itself.
At the moment the Dictionary file is somewhat limited - as to why that is, I have no idea. Pre Windows 10 days, Microsoft had a half decent spell checker, but currently its not as good.
You can manually add words to the Dictionary file for the Language pack you are using yourself to make it more effective:
- Open File Explorer
- In the address bar, type or copy & paste the following, then press Enter key:
Code:
%AppData%\Microsoft\Spelling
- Select the Language directory you want to modify the Dictionary file in
- Right-click on the Default.dic file and select Open with then select to open it with Notepad
- When Notepad has opened, simply enter a list of words, then save.
Note: Each new word entered must be on its own line!
Sample image
If you decide to remove words, you can use the same method above and remove the lines not needed, but if you want to clear the entire Dictionary file, then its simpler to do the following:
- Open Settings | Privacy
- On the left pane select Inking & typing personalization
- Now on the right pane click the hyperlinked: View user dictionary
- Now click the Clear Dictionary button
Regards,
Regedit32