Hans Brender's Blog

It always happen, and therefore I will point to the Original Website from Microsoft, where all Limitation and restrictions for the OneDrive, OneDrive for Business and SharePoint are listed

In the past this was behind the Knowledge Base Article KB 315202 (This article does not exist anymore, KB315202 was deleted)

So you have to use this Link

Invalid file names and file types in
OneDrive, OneDrive for Business and SharePoint

In this article you will find Restrictions, Limitations and troubleshooting tips

Invalid characters
Invalid file or folder names
Invalid or blocked file types
Network or mapped drives
Elevated privileges
Shared with Me
Guest accounts
Authenticated proxies
OneNote notebooks

File upload size
File name and path lengths
Thumbnails and previews
Number of items to be synced
Information Rights Management
Differential sync
Libraries with specific columns
Windows specific limitations
macOS specific limitations

OneDrive system requirements
Support and Recovery Assistant
Only sync what you need
Syncing too many files
Duplicate filenames

Microsoft is working on this article, if new or other restrictions, limitations occur. Therefore bookmark the site