Forum Discussion
"Sharing failed: value cannot be null" when trying to share a site with an external user?
We're attempting to share one of our SharePoint sites with an external user and I'm currently just doing some testing with my own personal email address. Everything has been configured correctly ...
Toby McDaid have you checked to made sure that the site collection is set to external sharing? You can have external turned on and still set a specific site to not share externally.
Berta K The site collections are definitely set up to allow sharing, they're on the 'new and existing' option.