A file or note will not open

Check the source object, permissions, and provider connection.

Check whether the item is a project library attachment, a referenced canvas document, a linked note, or an external provider file. These do not all use the same access path.

1. Confirm the source object still exists.
2. Check that you are in the correct project and organization.
3. Verify access to the source file or note.
4. For an external file, check the connected provider account and its permissions.
5. If Notes opens a new tab, check browser popup behavior.

A visible reference is not proof that the underlying file is readable. Unlinking an item from a project is also different from deleting the source.

Record the item link, source provider if relevant, error, and time when asking for help. Avoid repeatedly uploading replacement copies until the cause is clear.