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Ian Cunningham's avatar
Ian Cunningham
Iron Contributor
Feb 19, 2021

Regular prompts from Defender Firewall about OneDriveFile Co-authoring

I receive regular prompts from Defender Firewall about OneDrive File Co-authoring. (FileCoAuth.exe) appdata\local\microsoft\onedrive\21.020.0128.0002\filecoauth.exe The file is identified (by defen...
office 365
OneDrive for Business
  • Rudy_Ooms_MVP's avatar
    Rudy_Ooms_MVP
    MVP
    Apr 05, 2021
    Hi,

    It really depends if you have a user or machine wide onedrive installation. In all tenants I have got a test vm , the FileCoAuth.exe is inside the program files folder instead of the local appdata.
    I am not receiving any firewall prompt about it.

    Did you specify additional firewall rules or other settings connected to it?
    • Ian Cunningham's avatar
      Ian Cunningham
      Iron Contributor
      Apr 05, 2021
      No - never did anything - not sure why it came up - or why the installation of onedrive didn;t set them.
      • _GCA_'s avatar
        _GCA_
        Copper Contributor
        Jul 19, 2021

        Ian Cunningham, so it means I can grant access when defender blocks it?

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