duplicati/duplicati · error · UserInformationException

NoDestinationWithMarker

NoDestinationWithMarker

Error message

The marker file "{0}" was not found in any of the examined destinations: {1}

What it means

Error "The marker file "{0}" was not found in any of the examined destinations: {1}" thrown in duplicati/duplicati.

Source

Thrown at Duplicati/Library/Backend/File/FileBackend.cs:178

                    path = null;

                foreach (string p in paths)
                {
                    try
                    {
                        if (systemIO.DirectoryExists(p) && (markerfile == null || systemIO.FileExists(systemIO.PathCombine(p, markerfile))))
                        {
                            path = p;
                            break;
                        }
                    }
                    catch
                    {
                    }
                }

                if (string.IsNullOrWhiteSpace(path))
                    throw new UserInformationException(Strings.FileBackend.NoDestinationWithMarkerFileError(markerfile, paths.ToArray()), "NoDestinationWithMarker");
            }

            m_path = path;
            m_moveFile = Utility.Utility.ParseBoolOption(options, OPTION_MOVE_FILE);
            m_forceReauth = Utility.Utility.ParseBoolOption(options, OPTION_FORCE_REAUTH);
            m_verifyDestinationLength = !Utility.Utility.ParseBoolOption(options, OPTION_DISABLE_LENGTH_VERIFICATION);
            m_disableFilenameSanitization = Utility.Utility.ParseBoolOption(options, OPTION_DISABLE_FILENAME_SANITIZATION);
            m_hasAutenticated = false;
        }

        /// <summary>
        /// Pre-authenticates against the remote share if necessary.
        /// </summary>
        private void PreAuthenticate()
        {
            if (!OperatingSystem.IsWindows())
                return;

View on GitHub (pinned to 3f348be3e3)

Solutions

1. Verify the marker filename is spelled correctly and exists in the destination.
2. Point the configuration at the folder actually containing the marker file.
3. Create the marker file in the destination if it was deleted.

When it happens

Trigger: Thrown at Duplicati/Library/Backend/File/FileBackend.cs:178 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of duplicati/duplicati@3f348be3e3 (2026-08-13). Data as JSON: /api/errors/b96860c27d3e7565. Report an issue: GitHub.