@黒田 泰行 Based on the error message Server endpoint creation fails, with this error: "MgmtServerJobFailed" (Error code: -2147024894 or 0x80070002) This error occurs if the server endpoint path specified is not valid. Verify the server endpoint path specified is a locally attached NTFS volume. Note, Azure File Sync does not support mapped drives as a server endpoint path.

You may also refer here How to add a server endpoint and also check that you have the latest Azure File sync agent

Additional information :Troubleshoot Azure File Sync

Hope this helps! Kindly let us know if the above helps or you need further assistance on this issue.

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