I can't show any code here yet, because i'm still analyzing if it is possible to realize this.

In our company we have a virtual system to make and manage leave applications. I should now check if it would be possible to enter an approved vacation in the Outlook calendar of the applicant.

I would need a central solution which remotely accesses the calendar and enters the appointments. We currently use the on premise solution of Mircosoft Exchange 2019 and Office 365.

During my research I came across EWS but it seems that Exchange 2019 does not support it anymore. Is there possibly another solution which I could use? Basically I would like to realize a solution with C# but I would also be able to realize a Powershell or Java solution. But most of the time I did not find a real solution.

Most of the time the examples are always local on the machines or using an older Exchange Server like 2013. I haven't found reliable information for 2019 yet. I hope someone here can help me or give me a hint. Or it would also be helpful to say if it is not possible.

Best regards!

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I am currently working on a solution. I will post the code when I am successfull!\*\*