[GH-ISSUE #1403] Certificate errors Android 6 #989

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opened 2026-05-07 00:29:23 +02:00 by BreizhHardware · 4 comments

BreizhHardware commented

2026-05-07 00:29:23 +02:00

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Originally created by @username7291 on GitHub (Jul 26, 2025).
Original GitHub issue: https://github.com/binwiederhier/ntfy/issues/1403

Dont know if your Server uses a Certificate that dont exists in Android 6 or if it is another Bug. The App not work with default setting. Change the server to "http://ntfy.sh" make the app work for Text Messages. Images dont work, can´t downloaded cause it seems that this is internal catched again from https://. Accessing https://ntfy.sh from firefox works, too copy the url into firefox works. Click on "attachment.jpg" just open the browser with the url "attachment.jpg" without any server URL, means the browser of course cant find it. "java.security.cert.CertPathValidatorException: Trust anchor for certification path not found."

Originally created by @username7291 on GitHub (Jul 26, 2025). Original GitHub issue: https://github.com/binwiederhier/ntfy/issues/1403 Dont know if your Server uses a Certificate that dont exists in Android 6 or if it is another Bug. The App not work with default setting. Change the server to "http://ntfy.sh" make the app work for Text Messages. Images dont work, can´t downloaded cause it seems that this is internal catched again from https://. Accessing https://ntfy.sh from firefox works, too copy the url into firefox works. Click on "attachment.jpg" just open the browser with the url "attachment.jpg" without any server URL, means the browser of course cant find it. "java.security.cert.CertPathValidatorException: Trust anchor for certification path not found."

BreizhHardware

2026-05-07 00:29:23 +02:00

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BreizhHardware commented

2026-05-07 00:29:24 +02:00

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@wunter8 commented on GitHub (Jul 26, 2025):

The cert used by the web app is only supported back to Android 7.1.1. See here: https://letsencrypt.org/docs/certificate-compatibility/

@wunter8 commented on GitHub (Jul 26, 2025): The cert used by the web app is only supported back to Android 7.1.1. See here: https://letsencrypt.org/docs/certificate-compatibility/

BreizhHardware commented

2026-05-07 00:29:24 +02:00

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@username7291 commented on GitHub (Jul 26, 2025):

If you know that the app dont work with Android <7.1.1 why its listed in the playstore as compatible to my Device and even Android 5.0? Lets say you cant fix that, what about to let the user change the image server to http(like the default Server) or why dont take the default server setting too for images and fix the link that is send to browser without the url?

@username7291 commented on GitHub (Jul 26, 2025): If you know that the app dont work with Android <7.1.1 why its listed in the playstore as compatible to my Device and even Android 5.0? Lets say you cant fix that, what about to let the user change the image server to http(like the default Server) or why dont take the default server setting too for images and fix the link that is send to browser without the url?

BreizhHardware commented

2026-05-07 00:29:24 +02:00

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@wunter8 commented on GitHub (Jul 27, 2025):

You're right that the Play Store listing should probably be updated. That would make ntfy completely unusable on your device, though.

It might be okay to make the image URLs use the default server URL instead of always using 'https'.

Click on "attachment.jpg" just open the browser with the url "attachment.jpg" without any server URL

Are you attaching a local file? Or is this a URL attachment?
What button are you clicking on that is taking you the literal URL 'attachment.jpg'?

@wunter8 commented on GitHub (Jul 27, 2025): You're right that the Play Store listing should probably be updated. That would make ntfy completely unusable on your device, though. It might be okay to make the image URLs use the default server URL instead of always using 'https'. > Click on "attachment.jpg" just open the browser with the url "attachment.jpg" without any server URL Are you attaching a local file? Or is this a URL attachment? What button are you clicking on that is taking you the literal URL 'attachment.jpg'?

BreizhHardware commented

2026-05-07 00:29:25 +02:00

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@binwiederhier commented on GitHub (Feb 1, 2026):

The latest version of ntfy Android updates the minimum requirement to Android 8. Android 8 was released 9 years ago.

@binwiederhier commented on GitHub (Feb 1, 2026): The latest version of ntfy Android updates the minimum requirement to Android 8. Android 8 was released 9 years ago.