Epson iPrint “1102 / 1131” — communication/auth error: quick fixes

Joe B.

Expert ★★★★★ 27,853 satisfied customers

Specialities: Epson iPrint/Epson Smart Panel, Wi-Fi & mDNS/Bonjour, Android/iOS, SSL & captive portals

Fix Epson iPrint 1102 / 1131 — communication failure, authentication failed, same Wi-Fi, firewall, VPN/proxy

Technician

Hi! Let’s clear the Epson iPrint 1102 / 1131 errors. These usually mean communication or authentication failed between your phone and the printer or Epson Connect cloud. We’ll check same Wi-Fi network, LAN discovery (mDNS/Bonjour), and your login/SSL session. What phone (iOS/Android), router, and printer model are you using? Any VPN or ad-blocker/Private DNS enabled?

Customer

Android 14, home router is TP-Link. Printer is Epson EcoTank ET-2850. iPrint shows “1102 communication error” when I tap the printer. Sometimes I also saw “1131 authentication error” after signing in.

Technician

Great context. 1102 is typically a LAN discovery/connection problem (phone can’t reach the printer over local network). 1131 is often an auth/SSL session issue with Epson Connect or the app cache. We’ll:
1) Confirm phone and printer are on the same SSID & band (2.4 GHz vs 5 GHz).
2) Turn off VPN/Private DNS/Proxy that can break mDNS.
3) Re-enable Local Network permission (iOS) or Nearby devices/Location (Android).
4) Reset iPrint cache and re-login to Epson Connect with correct region.
5) Check router settings: AP isolation/client isolation, IGMP/multicast, and firewall.

Customer

The phone is on 5 GHz, printer on 2.4 GHz. I do use Private DNS and sometimes a VPN. Could that block discovery?

Technician

Yes. Epson iPrint uses mDNS/Bonjour broadcasts (multicast). Many routers block discovery across bands or when AP isolation or guest network is enabled.
Step 1 — Same LAN test
• Temporarily disable VPN/Private DNS.
• Connect the phone to the same SSID as the printer (prefer 2.4 GHz for setup).
• Reopen iPrint → Printer is not selected → Search. If it appears, tap to add. If not, choose Manual IP and enter the printer’s IP (e.g., 192.168.x.x).

Customer

After switching Wi-Fi and turning off VPN, the printer shows up, but tapping it still throws 1102.

Technician

Step 2 — Allow discovery through the router
• In the TP-Link admin, disable AP/Client Isolation and ensure your phone is not on a guest network.
• Turn on IGMP Snooping or Multicast enhancement if available; this helps Bonjour/mDNS.
• Give the printer a static/DHCP-reserved IP so the app can reconnect reliably.
• On the printer panel, confirm Wi-Fi (not Wi-Fi Direct) and that airplane mode on the phone is off.

Customer

Done. iPrint now connects, but when I sign into Epson Connect for remote print/scan, I get “1131 authentication error”.

Technician

Step 3 — Fix 1131 authentication
• In Android Settings → Apps → Epson iPrint → Storage → Clear cache (not data first). If it persists, clear data and re-open the app.
• Make sure the region in iPrint matches your Epson Connect account (US/EU/JP).
• Turn off content blockers and system-wide ad-blocking DNS that can break OAuth/SSL.
• Re-login using your Epson ID. If you use Sign in with Google/Apple, complete the browser hand-off and return to iPrint.

Customer

After clearing cache and logging in, it works for a while then fails again when I leave home Wi-Fi.

Technician

Understood. Away from home, iPrint uses Epson Connect Remote Print. Captive portals or restrictive guest Wi-Fi can block auth endpoints.
• Toggle to mobile data or a trusted Wi-Fi and re-try.
• Ensure date/time on the phone is automatic; bad time breaks SSL.
• If the account was just created, verify the Epson confirmation email and ensure the printer is registered to Epson Connect from its panel/software.

Customer

All right. Local printing is stable now. Can we force iPrint to connect by IP if discovery breaks again?

Technician

Yes. In iPrint → Printer is not selected → Manual IP → enter the printer’s static IP. Also confirm app permissions:
• Android: Nearby devices, Location (for Wi-Fi discovery), and local network.
• iOS: Settings → iPrint → enable Local Network and Background App Refresh.

Customer

Should I update firmware or reinstall the app if it happens again?

Technician

Good idea. Update the printer’s firmware from Epson Software Updater or the panel, and keep Epson iPrint current. If problems persist, uninstall/reinstall iPrint and reboot the router to refresh multicast/mDNS tables.

Customer

Perfect — 1102/1131 are gone and printing works both locally and remote. Thanks!

Technician

Summary: To fix Epson iPrint 1102/1131 communication/auth errors, use the same SSID, disable VPN/Private DNS, allow mDNS/Bonjour through the router, give the printer a static IP, clear iPrint cache, and re-login to Epson Connect. If discovery fails, add the printer by Manual IP. Need live help tuning your router? Open the chat.

Quick answer: the accepted fix

Accepted fix for Epson iPrint 1102 / 1131: connect phone and printer to the same Wi-Fi, turn off VPN/Private DNS, disable AP isolation, enable multicast/Bonjour, set a static IP, clear the iPrint cache and re-login. If needed, add the printer by Manual IP.

FAQ

Step-by-step (Epson iPrint 1102/1131)

1. Put phone and printer on the same SSID; disable VPN/Private DNS.
2. On the router, disable AP/Client isolation and enable multicast/Bonjour; reserve a static IP for the printer.
3. In iPrint, Clear cache → re-login to Epson Connect (correct region/time).
4. If discovery fails, add the device by Manual IP and test printing/scanning.

Notes for iOS & Android

1. iOS: enable Local Network permission for iPrint; confirm Bonjour is allowed by your router.
2. Android: allow Nearby devices and Location for Wi-Fi discovery; close ad-block VPNs.

Sources

• Epson iPrint — App info & connectivity
• Epson Connect — Account & remote print

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