File names that are not allowed for OneDrive files

There are limitations on what OneDrive files and folders can include in their names.

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• These names aren't allowed for files or folders: .lock, CON, PRN, AUX, NUL, COM0 - COM9, LPT0 - LPT9, _vti_, desktop.ini, any filename starting with ~$
• _vti_ cannot appear anywhere in a file name
• forms isn't supported when the folder is at the root level for a library
• You can’t create a folder name in SharePoint that begins with a tilde ~
• The following characters are not allowed in OneDrive for work or school or SharePoint filenames " * : < > ? / \ |  
• Leading and trailing spaces in file or folder names also aren't allowed