Share a file to multiple channels in Microsoft Teams

Share a file from OneDrive

1. Select the OneDrive   app on the left side of Teams and go to My files .
2. Hover over the file you want to share and select Share .
3. Add people and an optional message.
4. Select Share .

To copy a shareable link to a file, hover over the file name and select Share > Copy link . Select Change to modify access settings to the file. Paste the file into a post or message and share it.

Share to a channel

To share a file to a channel:

1. Select Chat and go to Channels. 
2. Select the channel you want to upload a file to.
3. Select the Posts tab.
4. Find the post or message you want to share a file to.
5. Beneath the post or message, select Reply > More actions and apps > Attach file .
6. Find and select a file.
7. Select Send .

In the Files or Shared tab of a chat or channel, tap More options > Copy link to get a share link. Then, you can either send in a message, or share in the app of your choice.