WebView no more working with new version, certificate issue appear.

[phlfr]

Home Assistant Android app version(s):
2025.8.7-full updated 08/22 ?
Android version(s):
13
Device model(s):
tablette UMIDIGI G2
Home Assistant version:
Méthode d'installation Home Assistant OS Core 2025.8.0
Supervisor 2025.08.1
Operating System 16.0
Interface utilisateur 20250806.0
Last working Home Assistant release (if known):

Description of problem, include YAML if issue is related to notifications:

I have a dashboard which display a small html page to display the tides:
I just call an URL: "https://services.data.shom.fr/hdm/vignette/petite/LARMOR-BADEN?locale=fr"

<title>HTML5</title> <style> article, nav { display: block; }

body article {
width:10px;
height:10px;
text-align: center;
}

</style> <script src="https://services.data.shom.fr/hdm/vignette/petite/LARMOR-BADEN?locale=fr"></script>

This was working perfectly fine since several weeks with the android home assistant companion on my android tablette ( UMIDIGI android 13).
Since few days - new Companion version - The web page is no more displayed, with an error message : "impossible de se connecter à Home Assistant, l'autorité de certification du certificat de Home Assistant n'est pas approuvée".

The problem is not on the side on the external server, the web page is perfectly displayed on Home Assistant thru a browser, on my computer or on the tablette, it is also working perfectly well on the home assistant companion application on my Iphone.

I suspect a problem with certificate...

I went to the log and see some strange things:

08-26 12:07:54.896 6968 6968 E WebViewActivity$onCreate: onReceivedHttpError: 404 : Not Found for: http://192.168.1.211:8123/browser_mod.js?automatically-added
08-26 12:07:55.889 6968 7066 I cr_X509Util: Failed to validate the certificate chain, error: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
08-26 12:07:55.891 6968 7088 E chromium: [ERROR:net/socket/ssl_client_socket_impl.cc:914] handshake failed; returned -1, SSL error code 1, net_error -202
08-26 12:07:55.900 6968 6968 E WebViewActivity$onCreate: onReceivedSslError: primary error: 3 certificate: Issued to: CN=api.data.shom.fr,O=Service Hydrographique et Océanographique de la Marine,L=Brest,ST=Bretagne,C=FR;
08-26 12:07:55.900 6968 6968 E WebViewActivity$onCreate: Issued by: CN=GEANT TLS RSA 1,O=Hellenic Academic and Research Institutions CA,C=GR;
08-26 12:07:55.900 6968 6968 E WebViewActivity$onCreate: on URL: https://services.data.shom.fr/hdm/vignette/petite/LARMOR-BADEN?locale=fr

Is there a change in the installation process with this version which could impact the usage of certificates ?

I tried to suppress/reinstall Home Assistant Android companion from Google play, but the problem stay the same.

Thank you for you help !

Companion App Logs:

Screenshot or video of problem:

Additional information:

[TimoPtr]

Home Assistant Android app version(s): 2025.8.7-full updated 08/22 ? Android version(s): 13 Device model(s): tablette UMIDIGI G2 Home Assistant version: Méthode d'installation Home Assistant OS Core 2025.8.0 Supervisor 2025.08.1 Operating System 16.0 Interface utilisateur 20250806.0 Last working Home Assistant release (if known):

Description of problem, include YAML if issue is related to notifications:

I have a dashboard which display a small html page to display the tides: I just call an URL: "https://services.data.shom.fr/hdm/vignette/petite/LARMOR-BADEN?locale=fr"

<title>HTML5</title> <style> article, nav { display: block; }

body article { width:10px; height:10px; text-align: center; }
</style> <script src="https://services.data.shom.fr/hdm/vignette/petite/LARMOR-BADEN?locale=fr"></script>

This was working perfectly fine since several weeks with the android home assistant companion on my android tablette ( UMIDIGI android 13). Since few days - new Companion version - The web page is no more displayed, with an error message : "impossible de se connecter à Home Assistant, l'autorité de certification du certificat de Home Assistant n'est pas approuvée".

The problem is not on the side on the external server, the web page is perfectly displayed on Home Assistant thru a browser, on my computer or on the tablette, it is also working perfectly well on the home assistant companion application on my Iphone.

I suspect a problem with certificate...

I went to the log and see some strange things:

08-26 12:07:54.896 6968 6968 E WebViewActivity$onCreate: onReceivedHttpError: 404 : Not Found for: http://192.168.1.211:8123/browser_mod.js?automatically-added 08-26 12:07:55.889 6968 7066 I cr_X509Util: Failed to validate the certificate chain, error: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found. 08-26 12:07:55.891 6968 7088 E chromium: [ERROR:net/socket/ssl_client_socket_impl.cc:914] handshake failed; returned -1, SSL error code 1, net_error -202 08-26 12:07:55.900 6968 6968 E WebViewActivity$onCreate: onReceivedSslError: primary error: 3 certificate: Issued to: CN=api.data.shom.fr,O=Service Hydrographique et Océanographique de la Marine,L=Brest,ST=Bretagne,C=FR; 08-26 12:07:55.900 6968 6968 E WebViewActivity$onCreate: Issued by: CN=GEANT TLS RSA 1,O=Hellenic Academic and Research Institutions CA,C=GR; 08-26 12:07:55.900 6968 6968 E WebViewActivity$onCreate: on URL: https://services.data.shom.fr/hdm/vignette/petite/LARMOR-BADEN?locale=fr

Is there a change in the installation process with this version which could impact the usage of certificates ?

I tried to suppress/reinstall Home Assistant Android companion from Google play, but the problem stay the same.

Thank you for you help !

Companion App Logs:

Screenshot or video of problem:

Additional information:

From the logs you've shared the issue is not on the app itself. The system is saying that it cannot validate the SSL certificate because it doesn't know the Trust anchor which seems to be HARICA TLS RSA Root CA 2021. Then the actual certificate of the website services.data.shom.fr has been issue the Thu, 21 Aug 2025 07:04:49 GMT which is I suspect the date where it starts to fail for you.

From the application perspective we cannot do anything about this because that's something that is handle by the OS itself (within the webview which is different than the browser available on the device).

Few things you could try

• Try to update the system
• Try to update the webview (if it possible)
• Check if the cert is really missing go in Settings → Security → (Advanced) → Encryption and Credentials if it is missing try to install it manually from https://repo.harica.gr/rep_dyn.php (search for HARICA GEANT TLS RSA 1, 2025 in the second dropdown menu and verify the signature of anything your download and compare to the one you get on your desktop while inspecting the cert of the website services.data.shom.fr that should SHA-1 : BE:7F:0B:36:F8:8A:22:DD:DE:D3:62:DB:9A:F7:9C:8E:65:82:B9:19 and SHA-256: 5B:67:8D:C4:40:95:A5:28:95:B6:3B:31:F2:72:27:F4:B3:6C:3E:34:74:91:BF:2B:FA:69:18:37:A5:FB:8C:79)

Since we cannot do anything more at the application level I'm going to close this issue.

[phlfr]

Thanks a lot, I have installed the certificate manually and it works !