405 Method Not Allowed
Situations in the vault where SharePoint, SPFx, Microsoft Graph or the Azure services around them answer with HTTP 405. Each one explains why it happens and how to fix it.
- GetObjectSharingInformation — GET always 405, CreatedBy always null, and other measured factsgotchas / rest-apiGET is 405 every time (stop retrying it: 2.7× slower), CreatedBy is always null, $expand is dead weight