OneDrive is for files you own; SharePoint is for files a team owns. That single distinction settles most of the questions the helpdesk gets about file sharing in Microsoft 365, including where to save a document, which link to send and why a colleague suddenly cannot open something they opened last week.
This post walks through the three moments where things usually go wrong: choosing the storage location, choosing the link type, and finding a shared file again weeks later.
OneDrive or SharePoint: who owns the file?
Ask one question before you save: does this file belong to me, or to the team?
A draft you are still shaping, a personal note, a scratch version of a slide deck, a document nobody else needs yet; that belongs in OneDrive. It is your storage area, tied to your account.
A project plan the whole team edits, a shared procedure, minutes everyone needs to find, a template colleagues reuse; that belongs in SharePoint, in the site or the Teams channel that covers the topic. The team owns it, so it stays available when someone changes role or leaves the organisation.
That last point is the practical reason to move a file out of OneDrive as soon as it becomes team work. A file that lives in one person’s OneDrive depends on that person. A file in a SharePoint site does not.
A useful habit: start in OneDrive while the document is yours alone, then move it to the team site the moment you invite the second editor. Moving it later is possible, but the links you already sent will need attention.
Where files in Teams actually live
When you share a file in a Teams channel, it is stored in the SharePoint site behind that team, in the Files tab of the channel. Teams is the window; SharePoint is the cupboard.
This matters when you go looking. If you cannot find a file through Teams, open the Files tab of the channel or the SharePoint site itself and browse the folder structure there. It is the same file, viewed from another angle.
Chat is different. A file you drop into a one-to-one or group chat is uploaded to your OneDrive, in a folder for Microsoft Teams chat files, and shared with the people in that conversation. So a file shared in chat is stored personally, even though it feels like team content. If several people need it for longer than the conversation lasts, put it in the channel or the team site instead.
Choose the right link before you press send
When you click Share, Microsoft 365 offers several link types. The differences look small and are not.
People in your organisation. Anyone inside the organisation who has the link can open the file. Good for internal documents that are not sensitive and where you do not want to maintain a list of names.
Specific people. Only the people you name can open it. They sign in, and the access is tied to their account. This is the safest default for anything with personal data, financial detail or draft decisions in it.
People with existing access. The link changes nothing about permissions; it simply points at the file. Useful when you are reminding a team of a document they can already reach, for example a file in their own team site.
Anyone with the link. No sign-in needed, so the link works for anyone who receives it, forwards it or finds it in a mailbox later. Your organisation may have this switched off. Use it only for genuinely public material.
On top of the link type you choose what the recipient may do: edit, or view only. Pick view when you want feedback without changes to the original. Some link settings also allow an expiry date or a password; if your organisation has those available, an expiry date is a quiet way to keep old links from living forever.
Two habits prevent most permission surprises:
- Send the link from the file itself, not a copy of the file. A copy in an attachment means two versions from that moment on.
- Check the link description above the Send button. It states in plain words who will be able to open it. Reading that one line takes a second and catches the wrong setting.
Why a colleague gets "You need permission"
Almost always one of four things happened.
The link was for specific people and it was forwarded to someone who was not named. The fix is to share the file with that person directly, rather than asking the original recipient to resend it.
The file moved. Links follow a file within the same location, but moving a document from your OneDrive to a SharePoint site, or between sites, can break what you sent earlier. Share the new location.
The file was in someone’s OneDrive and that person left or changed role. This is the case that argues for team sites.
The person is outside the organisation and external sharing is limited by policy. That is a decision for IT, not something to work around.
Finding a shared file again weeks later
The search box at the top of Office.com, SharePoint, Teams and the Office apps searches across the files you have access to, including files other people shared with you. Searching on a phrase from inside the document often works better than guessing at the file name.
A few places are worth knowing:
- Shared in OneDrive lists what others shared with you and what you shared with them. This is the fastest route to a file you know a colleague sent but cannot place.
- Recent in OneDrive and in the Office apps shows what you opened lately, wherever it is stored.
- Add shortcut to OneDrive on a SharePoint folder puts that folder in your own OneDrive view, so a team folder you use daily is one click away without copying anything.
- Favourites or Add to favourites marks individual files you keep coming back to.
One rule saves more searching than all of these: do not keep your own copy. When the version you work in is the version in the team site, there is one file to find and one file to trust.
A short checklist
- Personal or still a draft? OneDrive.
- Team work? The SharePoint site or Teams channel that covers the topic.
- Sensitive content? Share with specific people, view only unless they need to edit.
- Sharing a file that already lives in their team site? Use people with existing access.
- Something you open every day? Add a shortcut to OneDrive or mark it as a favourite.
File sharing questions keep coming back to the helpdesk because the rules are invisible until something breaks. Once colleagues can answer the ownership question and read the line above the Send button, most of those tickets stop appearing.
