We have an issue when some users signing into Office 365 via a browser and clicking on Sharepoint, they get the following error message. It was working fine up until 2 days ago. Does anyone know how to fix this? I contacted my domain host and they said
to contact Office 365
Server Error in '/' Application
Runtime Error
Description: An application error occurred on the server. The current custom error settings for this application prevent the
details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.
Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors>
tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".