[GH-ISSUE #1010] SSL Handshake Failed on Android11 Galaxy S21 #1006

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opened 2026-03-03 19:23:42 +03:00 by kerem · 1 comment

kerem commented 2026-03-03 19:23:42 +03:00

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Originally created by @JUDYDDD on GitHub (Oct 1, 2021).
Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1010

Proxyman version? (Ex. Proxyman 1.4.3)

Version 2.33.0 (23300)

macOS Version? (Ex. mac 10.14)

macOS 10.15.7

Steps to reproduce

1. Open device and Settings app > Wi-Fi > Select current Wi-Fi > Configure Proxy
2. Open Google Web Browser on Android devices to download http://proxy.man/ssl
3. install the Certificate in the VPN and App Section.
4. shows this file can't be used as a VPN or app certificate
5. proxyman shows SSL Handshake Failed (handshakeFailed(NIOSSL.BoringSSLError.sslError([Error: 268436502 error:10000416:SSL routines:OPENSSL_internal:SSLV3_ALERT_CERTIFICATE_UNKNOWN])))

Expected behavior

I can install the certificate and proxyman can be used .

Screenshots (optional)

Even if I clear all certificate and reinstall it. it still can not work.
I can use proxyman on my android device before I update proxyman to the latest version.

Originally created by @JUDYDDD on GitHub (Oct 1, 2021). Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1010 ### Proxyman version? (Ex. Proxyman 1.4.3) Version 2.33.0 (23300) ### macOS Version? (Ex. mac 10.14) macOS 10.15.7 ### Steps to reproduce 1. Open device and Settings app > Wi-Fi > Select current Wi-Fi > Configure Proxy 2. Open Google Web Browser on Android devices to download http://proxy.man/ssl 3. install the Certificate in the VPN and App Section. 4. shows this file can't be used as a VPN or app certificate 5. proxyman shows SSL Handshake Failed (handshakeFailed(NIOSSL.BoringSSLError.sslError([Error: 268436502 error:10000416:SSL routines:OPENSSL_internal:SSLV3_ALERT_CERTIFICATE_UNKNOWN]))) ### Expected behavior I can install the certificate and proxyman can be used . ### Screenshots (optional) Even if I clear all certificate and reinstall it. it still can not work. I can use proxyman on my android device before I update proxyman to the latest version.

kerem commented 2026-03-03 19:23:43 +03:00

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@NghiaTranUIT commented on GitHub (Oct 1, 2021):

Hey, Thanks for your report. From what I read, you encounter the SSL Proxying error because you haven't properly installed & trusted Proxyman Certificate on your Galaxy S21.

Please follow this guideline: https://docs.proxyman.io/debug-devices/android-device

Make sure you finish all important steps:

Step 4: 4. From Android Emulator API 30+, it requires extra steps to trust the Proxyman Certificate
Step 5: Add to res/xml/network_security_config.xml and AndroidManifest.xml

<!-- gh-comment-id:932071839 --> @NghiaTranUIT commented on GitHub (Oct 1, 2021): Hey, Thanks for your report. From what I read, you encounter the SSL Proxying error because you haven't properly installed & trusted Proxyman Certificate on your Galaxy S21. Please follow this guideline: https://docs.proxyman.io/debug-devices/android-device Make sure you finish all important steps: Step 4: 4. From Android Emulator API 30+, it requires extra steps to trust the Proxyman Certificate Step 5: Add to `res/xml/network_security_config.xml` and `AndroidManifest.xml`

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starred/Proxyman#1006

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