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 … OneDrive | Invalid file names and file types, Restrictions and Limits weiterlesen