Hi Neeraj.jha,
Did the issue only occur with exchange account? Have you tested with other exchange account or other mail account type such as the Microsoft Account? Have you tested with other mail app? Have you got any error messages or are there any error messages recoreded
in the Event Viewer(Windows Logs\Applications)?
Please share us more details of the issue. It will be very useful to narrow down the issue. Please try to turn off the firewall and the antivirus software temporarily then check the symptom again.
Best regards
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