Disable site sharing in Office 365 using CSOM

Question

I have a requirement to disable sharing of sites and documents in Office 365 site collection using CSOM.
Manually from UI, I can disable sharing by unchecking Access Request Settings under Site Settings.
But could not find a way to do it using CSOM.

Answer 1

Hi,
If it is an on premises environment, there is a property “RequestAccessEnabled” in SPWeb class in SharePoint Object Model can be used to change the
setting:
https://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spweb.requestaccessenabled.aspx
However, in an online environment, the SharePoint Object Model is not an option, what’s more, in Client Object Model which is designed for client side use, there is
no such a property in Web class available:
https://msdn.microsoft.com/en-us/library/microsoft.sharepoint.client.web_members.aspx
It means that it is not able to change the “Access Request Settings” with the client side technology such as JavaScript.
Thus, I would suggest you submit a feedback to the Office Developer Platform if there any expectation about the future version of Office 365:
http://officespdev.uservoice.com/
It
is a place for customers provide feedback about Microsoft Office products. What’s more, if a feedback is high voted there by other customers, it will be promising that Microsoft
Product Team will take it into consideration when designing the next version in the future.
Best regards
Patrick Liang
TechNet Community Support