Why are my onedrive documents opening in read-only mode after installing office 365 home edition?

Yes they are very much a faceless organization with the only priority is $ale$. That's all they care about. No one in the company wants to take responsibility. All their tech support is outsourced to Asia. They read from a script but when they have to deal with something that goes off script they are pretty much lost. Then they start asking questions and get clients to try stuff which is really annoying. Not that that is their fault they do the best they can with what they have. IMO Micro$oft is the single most  worst tech company on the planet.

Have tried all this but not working . The properties on OneDrive still goes back o ReadOnly

Not sure if anyone has posted a solution as I haven't read ALL the comments but the following worked for me:

Right click file that is in read-only

Properties

Un-select "Read-only"

open "Advanced"

Un-select "File is ready for archiving"

Apply and Okay.

Was then able to open the document, edit and save normally.

Mitigation 1: Disable "Use Office 2016 to merge changes or keep both copies" option in OneDrive. This mitigation is not preferred in our environment as it restricts sharing and

collaboration in Office 2016.

Mitigation 2: Enable "Delete files from the Office Document Cache when they are closed" option in the Microsoft Office Upload Center Settings. This mitigation in our environment is preferred but results in slower file opening and closing and increased network use.

Mitigation 3: Pause Onedrive when the file is opened and edited, after editing has finished Unpause synching.

like Becky below,

I selected the folder,

right clicked properties,

deselected read only,

hit save,

then told selected to have it apply setting to all items in folders and subfolders

worked after that