My content must be online. How can I do that?

My content on my harddisk= OK but my pc must be online.
My content on onedrive = I can not find how.

Check out Cloud Sync!

https://support.plex.tv/hc/en-us/articles/201889756-Cloud-Sync-Overview

@“foto’s familie Vander Elst” said:
My content on my harddisk= OK but my pc must be online.
My content on onedrive = I can not find how.

Plex is primarily meant for local content. Local as in drives that can be accessed locally (internal hard disks, USB disks, NAS on your LAN, etc). If your content is in the cloud, you’ll have to mount the cloud as a drive on your local Plex Media Server computer first before Plex can see it.

How can I put my content online so that Plex can see it?

@“foto’s familie Vander Elst” said:
How can I put my content online so that Plex can see it?

You can upload your content to the cloud (any cloud provider theoretically), but you have to mount that cloud storage as a drive in your OS for Plex to have access to it.

can you explain me how I put my cloud storage as a drive in my OS for plex.

I like to link my content from onedrive in de Plex cloud. But Plex cloud has always a red cross on my screen. I was downloading the last version, but nothing changed.

Heb je hier al eens gekeken?
https://support.plex.tv/hc/en-us/articles/226645727-Getting-Started-with-Plex-Cloud

Je media kun je uploaden (via je webbrowser) naar je cloud drive en in plex cloud settings kun je inloggen op je cloud drive om een link te maken met de drive. Daarna kun je je libraries aanmaken zoals je gewend bent.