Teams shares files up to 250 GB
250 GB per file, because Teams doesn't really attach files: it saves them to SharePoint or OneDrive and shares them from there. You can attach up to 10 files to a chat message.
Numbers checked Οκτώβριος 2026. Each one links to where it came from.
The limits
- File upload, every Microsoft 365 planlearn.microsoft.com, checked Οκτώβριος 2026
- 250 GB
- Attachments per chat messagelearn.microsoft.com, checked Οκτώβριος 2026
- 10
- Chat "file size limitation"learn.microsoft.com, checked Οκτώβριος 2026
- 100 MBListed by Microsoft without saying what it covers
- Storage for a team's fileslearn.microsoft.com, checked Οκτώβριος 2026
- 25 TBPer site or group, at most
- Teams for personal use, free storagesupport.microsoft.com, checked Οκτώβριος 2026
- 5 GB
- Emailing a file to a channellearn.microsoft.com, checked Οκτώβριος 2026
- Under 10 MBEach, up to 20 attachments
What happens when it's too big
Attach more than 10 files to a chat message and Teams shows an error. Microsoft doesn't say what you'll see for a single file that's too big.
Files in a channel go to the team's SharePoint site; files in a chat go to your OneDrive for Business, shared with the people in that chat. So the real limits are SharePoint's and OneDrive's: 250 GB a file, and whatever storage your organization has left.
Microsoft Teams's own way round it
There isn't a separate workaround, because Teams already shares files as links. For very large files, Microsoft suggests the OneDrive sync app over uploading in the browser.
On the free personal version of Teams, documents share 5 GB of storage.
Or skip the upload
When the file is bigger than your OneDrive has room for, or the person isn't in your organization, send a download.fyi link. Drop the file, paste the link into the chat, and it streams from your computer to theirs.
Nothing is stored in SharePoint, and nobody needs a Microsoft account to open it.
Questions
Why does Microsoft list both 100 MB and 250 GB for Teams?
Microsoft's chat limits table has a "file size limitation" of 100 MB without saying what it covers. The 250 GB figure is the per-file upload limit for SharePoint and OneDrive, which is where Teams keeps shared files.
Where do files I send in a Teams chat go?
To your OneDrive for Business, shared with the people in the chat. Files posted in a channel go to the team's SharePoint site.
Can I email a file into a Teams channel?
Yes, up to 20 attachments per email, each under 10 MB.
Other apps' limits
Sign up. Upload. Wait. Just drop it.
No account and no size cap. Your link is ready the moment you pick a file.
Send a file