Applies to: Windows 10, Mail on Windows 10
You will notice this error show when you are trying to add an account to the Mail App on Windows 10. The cause of this error can be based on multiple factors, which is why this troubleshooting guide will help to try and resolve this error.
When reading though the community, and though my own experience, this error looks to crop up when the app is not up to date, Windows is not up to date or if there are corrupt files within the app files or Windows files.
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