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C# ASP Net Core Error

When doing a Single lookup from database getting error. XeroBankAccount bankAccount = xeroBankAccountService.Table.Single(p => p.Guid == guid); Gets below exception line: System.InvalidOperationException: Sequence contains no elements at...

NETSTAT in Windows

To get open TCP ports with process ID, first run command prompt as administrator, then run command: netstat -ano -p tcp|findstr LISTENING Result will be: TCP LISTENING 4748 TCP LISTENING 4708 TCP

Paypal webhook error:

While running Paypal IPN simulator test you may receive below error: IPN was not sent, and the handshake was not verified. Review your information. Running client certificate verification with openssl client seems to be okay: openssl s_client -connect...