Hi,
Thank you for posting your question in the Microsoft Community.
Happy New Year!
I appreciate the efforts taken by you in troubleshooting this issue.
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Are you aware of any changes made to the PC prior to this issue?
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Do you have the latest updates installed on the PC?
Using Windows dictation feature converts spoken words into text on your PC. It's possible that the feature turns off automatically when it doesn't hear
anything.
Let us follow these methods one by one to check if that helps.
Method A: Make sure that you have the latest version of Windows installed on your device. To check this, open the Settings screen, select System > About.
Install the latest update if you are prompted to. ‘Keep the PC up to date’
Note: Dictation is available in US English only. To use it, your PC needs to be connected to the internet. To dictate in other languages, see
Use speech recognition.
Method B: Your keyboard language should match the language of your Windows. To check this, open the Settings screen, click Time and Language > Region
& Language.
To isolate the issue, create a local user account. Follow the steps in ‘Create
a local user or administrator account in Windows 10’ article. Once done, you can try using the Windows dictation from that account.
‘Use dictation to talk instead of type
on your PC’
Let us know how it goes.
Hope this helps.
Regards,
Srimadhwa B
Microsoft Community-Moderator