How do I share/receive a file or folder on SharePoint and OneDrive to/from a colleague or external user?

Also use this method to receive large files from somebody externally

Overview Training Video

Microsoft: Share files and folders in SharePoint & OneDrive


Share files externally securely or create an upload depository

Upload Depository Tip: Emailing has a limit of 25MB. If you wish to receive a large file from an external user, create a folder (1 per person) and share to their email address with edit rights. Once they verify their sign in, they will be able to upload files to this folder.

Share Link Tip: When sharing externally, if you specify a person's email address to share to (as demonstrated below), that person will either need to verify their email by a code or have a Microsoft 365 account associated with that address. If they're signed into their internet browser with another Microsoft account using a different email address to the one you shared to then they won't be able to use the link unless they sign out or use a private/incognito tab.

To make it simpler for the external recipient, consider creating an Anyone Link instead and set a password and expiry date if the contents are sensitive.


SharePoint Online (Web Version)

Note: If you wish to update a file, as long as you overwrite the original file with the same name then the original share links remain active. Deleting the original first will remove the share link.

Tip: Test all share links yourself in a private browser session before sending out.


Troubleshooting

I cannot share a file or folder to somebody in SharePoint or the person is not listed >


Instructions can also be found on pages 12-16 here:
SharePoint and OneDrive Ultimate Guide