Keyboard substitutes quotation marks for the AT symbol ?

This happens because your keyboard layout is changed to UK from US where @ symbol appears where " symbol is there.

Step 1. Windows Key+I to invoke Settings > Time & Language > Region & Language > Add English (US) or any other appropriate language.

Remove English (UK) or any other language which you didn't need (Note - This is optional. If you don't want to remove, then go to Step 2)

Reboot your computer

Step 2. This step may be needed if step 1 doesn't work or you don't want to remove languages in step 1

While you are in Region & Language, click Additional date, time & regional settings > Click change input methods > Advanced Settings

Under Override for default input methods, choose US(English) or appropriate language.

Reboot your computer

(Note, here you will also find Switching Input Methods under Advanced Settings > Change language Bar hot keys. Here you have hot keys for changing language which must have been pressed inadvertently. This hot key can be used to switch languages)

Hi Contrary2011, yes, if your @ symbol is above the single quotes, you have a UK (en-GB) keyboard . . .

Right click your Start Button, choose Powershell (admin)

Run this command and then hit Enter:

$1 = New-WinUserLanguageList en-GB

Then run this command and hit Enter

Set-WinUserLanguageList $1

Close Powershell and restart your PC

Hi , there is a known bug in the 1803 version of Windows 10. Microsoft are aware of this issue and hopefully are working on a patch . . .

If the @ symbol on your keyboard is above the 2, you have a US English Keyboard

If the " symbol on your keyboard is above the 2, you have a UK English Keyboard

For the moment, please try this workaround to set your preferred input language:

Right click your Start Button, choose Powershell (admin)

Run this command to get a list of installed languages on your PC

Get-WinUserLanguageList

Note down the LanguageTag of your preferred language

If say, your preferred language is UK English, run this command and hit Enter:

$1 = New-WinUserLanguageList en-GB

Then run this command to set the order of installed input languages

Set-WinUserLanguageList $1

Close Powershell and restart your PC