“Hold for Authentication” persists — Keychain/SMB/AD deep‑dive fix

Joe B.

Reviewed for technical accuracy

Specialities: macOS (Sonoma/Ventura/Monterey), CUPS, AirPrint, IPP, SMB, Active Directory, Keychain, Creative Cloud

Mac printer “Hold for Authentication” — CUPS error log, fix Keychain/SMB, Active Directory, IPP vs PPD

Technician

Hey! Let’s fix the “Hold for Authentication” loop on macOS. Tell me your macOS version (Sonoma/Ventura/Monterey), printer model, and whether you print over SMB, IPP/HTTP, or AirPrint. We’ll check CUPS error_log, repair Keychain credentials, and make sure the correct driver (IPP vs PPD) is in use.

Customer

Sonoma MacBook Pro, queue says Idle. When I print, the job flips to Hold for Authentication and then pauses. We use an SMB path to a Windows print server joined to Active Directory.

Technician

Thanks. On macOS, “Hold for Authentication” usually means CUPS rejected credentials or the app didn’t pass them to the SMB pipeline. Common causes include:
• Saved Keychain item with an old password or wrong format (DOMAIN\user vs user@domain).
• CUPS authentication failed due to missing Kerberos ticket (kinit) or expired AD token.
• Queue added with a Generic PPD missing attributes or an unsupported option (e.g., booklet/duplex setting) that breaks job submission.
• Server flags like SMB signing required or insecure guest/NTLM settings.
Plan: analyze /var/log/cups/error_log with debug2, clear Keychain entries, test IPP over HTTPS vs SMB, and re‑add the printer with proper authentication (username + domain).

Customer

Where do I find the CUPS log on Mac? And what should I look for?

Technician

Read the CUPS error_log on macOS:
1) Open Terminal: cupsctl --debug-logging (turns on verbose logging). Print one test page to reproduce the pause.
2) Open: sudo open /var/log/cups/error_log — look near the end for auth lines: client-error-not-authorized, Hold for Authentication, negotiated NTLM, or unsupported format.
3) Turn off after testing: cupsctl --no-debug-logging.
If you see “session setup failed: NT_STATUS_LOGON_FAILURE” or “status: authentication required”, it’s an SMB credential problem.

Customer

The log shows: tree connect failed: NT_STATUS_ACCESS_DENIED. We also have Keychain entries for the server.

Technician

Great find. Fix Keychain/SMB auth on Mac:
• Open Keychain Access → search your print server name and smb:// entries. Delete stale items for cifs/smb and the printer queue, then re‑add when prompted.
• When macOS asks for credentials, enter DOMAIN\\username (or username@domain.tld) and select Remember this password in my keychain.
• If your environment uses Kerberos, run klist to check tickets; renew with kinit user@DOMAIN.TLD if expired.

Customer

We print via SMB because the Windows server shares queues. Should we switch to IPP or AirPrint to avoid the loop?

Technician

If possible, prefer Secure AirPrint (IPP/IPPS) for Macs. It’s native to CUPS, respects Keychain, and avoids SMB auth quirks. Steps:
1) Re‑add the printer using IPP (ippp://server/queue or ipps://server/queue) and select the correct model or AirPrint driver.
2) Verify server supports IPPS with proper cert (TLS).
3) For Windows print servers, enable Internet Printing / IPP, or publish the device directly from the MFP using AirPrint.
If you must keep SMB, ensure AD allows NTLMv2 and the server won’t reject domain formats.

Customer

After clearing Keychain and re‑adding via IPP, the job still pauses with authentication required. The queue uses a Generic driver.

Technician

That can do it. Some Generic PPDs expose options the device doesn’t support and CUPS may reject the job. Do this:
• Remove the queue and install the vendor’s AirPrint/IPP profile or proper PPD (HP/Epson/Canon/Brother).
• Set authentication method to Prompt for username/password or Kerberos if your realm is configured.
• In Acrobat/Word, disable saved presets that call unsupported options (booklet, advanced finishing) while testing.

Customer

Ok. If the print server caches a wrong password, can that still cause problems?

Technician

Yes. On AD environments, account lockouts or policy changes (SMB signing, guest access disabled) can trigger the authentication loop. Ask IT to confirm:
• Your AD account is not locked and allowed to print to that queue.
• Server accepts NTLMv2/Kerberos and matches your domain format.
• If using Papercut/Equitrac/Accounting, the queue may require a release station — jobs will pause until authenticated.

Customer

Any quick way to reset everything on the Mac side and start clean?

Technician

Yep — Reset the printing system: System Settings → Printers & Scanners → right‑click (or Options) → Reset. Then:
1) Remove stale Keychain items for the server/queue.
2) Reboot, then add the printer via IPPS/AirPrint (preferred) or SMB with DOMAIN\\user.
3) Print a test PDF; if it pauses, grab the CUPS error_log snippet and we’ll analyze further.

Customer

After re‑adding with IPPS and entering DOMAIN\\user, printing works. Anything else to lock this down so the prompt doesn’t come back?

Technician

Final hardening tips: set Authentication = Saved credentials in Keychain, verify the certificate trust for IPPS, and keep a valid Kerberos ticket on domain Macs. Avoid changing driver presets that require special privileges (secure print/hold). Save an app preset named Standard to prevent odd options from re‑triggering Hold for Authentication.

Customer

Perfect — queue no longer pauses and no more prompts. Thank you!

Technician

Summary: If your Mac shows “Hold for Authentication”, check the CUPS error_log, clear incorrect Keychain passwords, validate SMB/AD credentials or switch to IPP/AirPrint, and use the correct PPD. Reset the printing system when needed. Need help reading the logs? Open the chat.

Quick answer: the accepted fix

Accepted fix when a Mac printer pauses with “Hold for Authentication”: enable verbose CUPS logging, remove stale Keychain items, re‑add the printer using IPPS/AirPrint or correct SMB domain credentials, and install the right PPD/driver. Verify Kerberos tickets on domain‑joined Macs.

FAQ

Step‑by‑step (macOS)

1. Enable CUPS logging: cupsctl --debug-logging and reproduce the issue.
2. Open Keychain Access; remove stale smb://, cifs://, ipps:// entries for the server/queue.
3. Reset printing system if needed, then re‑add the printer via IPPS/AirPrint or SMB with DOMAIN\\username.
4. Install the proper PPD/driver; avoid Generic unless required.
5. Print a test PDF; if paused, read /var/log/cups/error_log for authentication errors and adjust.

Step‑by‑step (Servers/AD)

1. Confirm AD account status and print permissions on the target queue.
2. Ensure SMB supports NTLMv2/Kerberos; disable obsolete guest access.
3. For IPPS, present a valid TLS certificate trusted by macOS.
4. If using accounting/secure print, provide the correct PIN/release method.

Sources

• Apple — If you can’t print on Mac
• CUPS — Log files and debugging
• Apple — Keychain Access
• Kerberos — kinit/klist basics

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