When in the 'Edit User' section in. I am unable to delete users. I get the initial pop-up box but when I confirm the delete this error is thrown -
[NullReferenceException: Object reference not set to an instance of an object.]
EPiServer.UI.Admin.DeleteMembershipDialog.DeleteUser_Click(Object sender, EventArgs e) +445
EPiServer.UI.WebControls.ToolButton.RaisePostBackEvent(String eventArgument) +253
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3803
Previously, I had run into the same issue and checking the 'change password' checkbox would allow me to delete, now it seems that no longers serves as a workaround.
This issue only appears to be present on staged and production environments (where it sometimes works and sometimes does not); the lack of local replication is making it a real pain to try and diagnose.
Version numbers are as follows:
Url for the delete pop-up is:
Any help would be appreciated.
Found out what this was - two environments on the same servers (load balanced) were pointing at the same port for UDP and the remote events. Opening up a new UDP port and amending one of the configs (on both servers) to use it did the trick.
Hope this helps anyone who gets here through Google!