Impossible to access Mattermost from Android, but ok in Windows


When trying to access Mattermost from Android app it doesn’t connect.

Steps to reproduce
Mattermost Team 4.6. Centos 7. TLS on.
Works ok from Chrome in Windows.

Expected behavior
Working ok in Android app too

Observed behavior
We’re using to connect in Windows Chrome. It works.
This is our config:
“SiteURL”: “”,
“LicenseFileLocation”: “”,
“ListenAddress”: “:8065”,
“ConnectionSecurity”: “TLS”,
“TLSCertFile”: “cert.pem”,
“TLSKeyFile”: “privkey.pem”,
“UseLetsEncrypt”: false,
“LetsEncryptCertificateCacheFile”: “./config/letsencrypt.cache”,
“Forward80To443”: false,

Any ideas why it doesn’t connect from the Android App.
The error is:
"Can't connect, please verify the URL and your internet connection".

Thanks for your help


Hi @richilp,

Perhaps this mobile FAQ will be helpful?


Thanks Lindy.

The problem are not the nottifications, but the connection with the server.
It looks like a TLS problem, but it’s working with a windows navigator.

I don’t exactly what is it differente between the connection in a navigator and the conecttion with the app.

Thanks !!



Thanks for your feedback,

Perhaps the documentation for setting up TLS will be of assistance?


I think this is related to the broken certificates Let’secrypt with Mattermost.I’ll try with the new version


Ah, might very well be @richilp,

Let us know how it goes after the upgrade once released…