Scan-to-NAS over SMB stopped working or throws errors
MFPs used SMBv1 for scan-to-share for years. Synology, QNAP and modern Windows file servers turned SMBv1 off. Older MFP firmware handles SMBv2/v3 poorly or not at all. Firmware update or replacement is the path.
Try this first
- 1Check on the NAS which SMB versions are enabled. On Synology: Control Panel > File Services > SMB > Advanced. Set SMBv2 minimum, not SMBv1.
- 2Update MFP firmware to the latest. Most vendors added SMBv2/v3 support around 2019-2020.
- 3Create a dedicated scan user on the NAS with write-only rights to one folder. Don't use admin.
- 4On the MFP: enter host (try both FQDN and IP), share, username, password. Many MFPs trip on spaces or special characters in the password.
- 5If SMB still won't work, use FTPS as a second-best, or interpose a Windows share that the NAS syncs.
When to bring us in
For pre-2018 MFPs, SMBv2 is often a dead end. Then it's either replacement or an interposed Windows share. We pick the path that lasts years.
See also
- Printer suddenly not foundFor everyone at once: print server or network. For one person: local Windows driver or expired authorisation.
- Print job stuck in queue, nothing happensA stuck queue blocks all subsequent prints. Cleaning takes two minutes.
- Scanner no longer sends emails (scan-to-email)Almost always: the account the scanner uses had its password expire, or the mail provider blocks old protocols.
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