Hi SumantaRay -
I'm Kevin B., I do apologize for the inconvenience that you're experiencing right now, let me help you sort things out.
Kindly try to reset the Windows Security App on your windows computer and check if it helps
Search for the Windows Security using the Cortana Search Box
Right click on the resulting app and select app settings
Scroll down and select Reset
Wait for the process to complete the reset
Restart the computer and check the windows security again
If the above method did not fix the issue, kindly follow the steps below
Open the Windows PowerShell as administrator
Type the commands below and press enter after the command
Get-AppxPackage *Microsoft.Windows.SecHealthUI* | Reset-AppxPackage
Close the Windows PowerShell and restart the computer
Check if the same issue appears
Hope this will help and have a bless day!
Thanks.
Kevin B.
Independent advisor