# Direct to printer - Error getting printer certificate from API
**URL:** https://forum.innovativeusers.org/t/direct-to-printer-error-getting-printer-certificate-from-api/2951
**Category:** Polaris
**Created:** [May 27, 2026, 6:38pm UTC](https://forum.innovativeusers.org/t/direct-to-printer-error-getting-printer-certificate-from-api/2951 "2026-05-27T18:38:53Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Tina\_Mourad](https://forum.innovativeusers.org/u/Tina_Mourad)
#### Post date: [May 27, 2026, 6:38pm UTC](https://forum.innovativeusers.org/t/direct-to-printer-error-getting-printer-certificate-from-api/2951/1 "2026-05-27T18:38:53Z")
Hello,
help!
I’m not able to connect to my receipt printer. I have a Star TSP100 receipt printer and followed through with the settings mentioned in this [post](https://forum.innovativeusers.org/t/star-receipt-printers-not-supported-in-star-line-mode-with-qz-tray-switching-to-esc-pos-emulation/2566) but it didn’t help . I seem to be the only one with this issue. I have also uninstalled and re-installed QZ Tray.
Thank you!
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### Author:  [@wesochuck](https://forum.innovativeusers.org/u/wesochuck)
#### Post date: [May 27, 2026, 7:01pm UTC](https://forum.innovativeusers.org/t/direct-to-printer-error-getting-printer-certificate-from-api/2951/2 "2026-05-27T19:01:48Z")
You need a certificate:
- [Either create a self-signed one](https://knowledge.ag-software.clarivate.com/polaris-help-8.0/LeapHelp/Basics/Set_direct_to_printer_option.htm). If you are hosted, I’m guessing you have to request this from support.
- [Or follow these instructions](https://forum.innovativeusers.org/t/how-to-bypass-manually-installing-a-qz-tray-printer-cert-pem-file-and-bypass-the-certificate-pop-up/2652).
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### Author:  [@Tina\_Mourad](https://forum.innovativeusers.org/u/Tina_Mourad)
#### Post date: [May 27, 2026, 7:17pm UTC](https://forum.innovativeusers.org/t/direct-to-printer-error-getting-printer-certificate-from-api/2951/3 "2026-05-27T19:17:09Z")
Hi Wes, Yes I have a certificate that is being used by QZ tray .
I’ve tried “strict certificate mode” as well.
Do you think I should reinstall printer? I can’t think of anything else to do other than that
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### Author:  [@wesochuck](https://forum.innovativeusers.org/u/wesochuck)
#### Post date: [May 27, 2026, 7:42pm UTC](https://forum.innovativeusers.org/t/direct-to-printer-error-getting-printer-certificate-from-api/2951/4 "2026-05-27T19:42:22Z")
If you’re using Chrome based browsers, have you checked this information? [Repost regarding potential browser changes that would affect QZ tray (and any similar product)](https://forum.innovativeusers.org/t/repost-regarding-potential-browser-changes-that-would-affect-qz-tray-and-any-similar-product/2688)
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### Author:  [@Susan\_Millwater](https://forum.innovativeusers.org/u/Susan_Millwater)
#### Post date: [May 29, 2026, 3:12pm UTC](https://forum.innovativeusers.org/t/direct-to-printer-error-getting-printer-certificate-from-api/2951/5 "2026-05-29T15:12:18Z")
This post may be helpful: [Star Receipt Printers not supported in Star Line mode with QZ Tray switching to ESC/POS emulation](https://forum.innovativeusers.org/t/star-receipt-printers-not-supported-in-star-line-mode-with-qz-tray-switching-to-esc-pos-emulation/2566)
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### Author:  [@Tina\_Mourad](https://forum.innovativeusers.org/u/Tina_Mourad)
#### Post date: [May 29, 2026, 3:28pm UTC](https://forum.innovativeusers.org/t/direct-to-printer-error-getting-printer-certificate-from-api/2951/6 "2026-05-29T15:28:54Z")
Thank you all for your help! It turns out the issue was on the server-side / Innovative where after the upgrade to 8.1 the certificate was gone. (we are still under migration and not under normal Support help)