Following the User Principal Name (UPN) change, you may notice that staff on your team may have issues accessing folders and files that you've previously shared with them. This is because the change in the UPN does not match the new one. There are two ways you can correct this:
1. Update URLs for files or folders in favorites/bookmarks in a browser. (Click here for more detailed instruction.)
OR
2. Update permissions for the users on your team.
For the second option, please use the following instructions:
1. Open OneDrive and select the folder/file you wish to share. Next to the folder/file name you will see a set of 3 dots.
2. Right-click on the dots and select the "Manage Access" option.
3. Go to the area that says "Direct Access" and click the "+".
4. Add the staff you want to add to the list and save.