Hello,
When em client sincronyze data from calendar of my exchange account , the client throw this error in log event window:
12.43.01 [Exchange Web Services] MailClient.Accounts.ConnectionException: Invalid timezone. Id: Pakistan Standard Time, DisplayName: (UTC+05:00) Islamabad, Karachi, Standard name: Standard, Daylight name: null —> System.ArgumentException: Invalid timezone. Id: Pakistan Standard Time, DisplayName: (UTC+05:00) Islamabad, Karachi, Standard name: Standard, Daylight name: null —> System.ArgumentNullException: value cannot be null.