ERROR_CLOUD_FILE_ALREADY_CONNECTED 0x8007017A

Error code 378 · HRESULT 0x8007017A

WINDOWS

The cloud sync root is already connected with another cloud sync engine.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

ERROR_CLOUD_FILE_ALREADY_CONNECTED is a Windows error code (system error 378, returned as HRESULT 0x8007017A) reported by Windows. Its official message is: “The cloud sync root is already connected with another cloud sync engine.”

How to fix ERROR_CLOUD_FILE_ALREADY_CONNECTED

  1. Verify the path/file actually exists and is not blocked by antivirus quarantine
  2. Reinstall the application that raised the error to restore missing files
  3. Check the full path spelling (long paths >260 chars need a registry opt-in)

Related errors

ERROR_CLOUD_FILE_NOT_IN_SYNCERROR_CLOUD_FILE_NOT_SUPPORTEDERROR_CLOUD_FILE_INVALID_REQUESTERROR_CLOUD_FILE_PROPERTY_VERSION_NOT_SUPPORTEDERROR_NOT_A_CLOUD_FILEERROR_CLOUD_FILE_READ_ONLY_VOLUMEERROR_CLOUD_FILE_TOO_MANY_PROPERTY_BLOBS

Source: Microsoft WinError.h

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