Star Printer Troubleshooting

Unable to install Start printer on Mac (Cannot communicate with printer..)

Solution: When installing the printer, make sure to select Line Printer Daemon - LPD protocol, NOT the air print protocol. Then with the Select Software dropdown, choose the Star printer model.

Direct Print: Stuck on "Sending to printer"

If you try to print a receipt using the direct print method and the print preview page is stuck on "Sending to printer" like this:

Issue: IP Address changed but installed certificate is for old IP address

There may be an issue with the certificate that is installed on your device. First, shut the printer off and while holding the Feed button, turn the printer back on. A receipt will print with your IP address at the bottom. (See instructions here). Make sure this is the IP address entered in the POS register printer settings dialog:

If you are using an iOS device, try follow these instructions to delete the existing security certificate off the ipad and reinstall using the direct print settings:

✅ Delete the certificate profile

On the iPad:
Settings → General → VPN & Device Management → Profiles
Delete the Star printer cert if it’s still there.

If you don’t see it, that’s fine — iOS sometimes hides it when it’s half-deleted.

✅ 2. Clear Safari’s TLS cache (this part people miss)

Safari holds onto certificate details even after you delete the profile.
Go to Settings → Safari → Clear History and Website Data. This clears cached TLS sessions, including cert fingerprints Safari still trusts.

✅ 3. Hard-reboot the iPad

Don’t skip this — iOS only fully resets some trust caches after a restart. Hold Power + Volume → Slide to power off → Turn back on (or follow the typical restart process for your device)

✅ 4. Reinstall the new certificate from the printer’s new IP address

Another possible solution

Update your router to reserve the previous IP address for your printer. This involves logging into your router settings, selecting the printer device, and specifying which IP address should be assigned to that printer. Tell it to use the old IP address that was working. Click Save and then restart your printer. Print network configuration receipt to make sure the old IP address is assigned to it again. Now the printing should work if the certificate for that IP address is still installed.