The Security and SSL page in the Android developer documentation provides a more detailed explanation of the common problems encountered when verifying certificates. If you are using a certificate from a Trusted Authority, you'll need to investigate why your certificate is not trusted by the device, as there may be an issue in the certificate chain. If you're still unable to connect after installing the certificate on your device, ask your admin to check that the following extension is declared in the certificate file: Your version, or device's implementation, might differ.

You can verify that the certificate has been installed at Settings > Security > Trusted Credentials > User (1).

Follow the prompts to install the certificate (2).

When prompted, name the certificate (1).

To install a certificate on your Android phone or tablet: Manually install your certificate on an Android device

You should now be able to log in to your Confluence site using the Confluence Data Center and Server app.

On your device go to Settings > General > About > Certificate Trust Settings.

The certificate will be shown as Verified on the Profiles and Device Management screen.

Check the certificate details are correct (1) then tap Install (2).

The Install Profile screen will appear.

Access the certificate on your device (for example, download it from a location provided by your admin, or open it from an email).

To install a certificate on your iPhone, iPad or other iOS device: Manually install your certificate on an iOS device Even if you've done this, and are able to view the site on your browser, you'll still need to install the certificate in order to log into your site using the app. Some browsers will warn you that a site's certificate is self-signed, or from an unknown Certificate Authority, but still allow you to view the site.

you are connecting to a version of Confluence Server that does not support the mobile app (6.7.x or earlier).

you're accessing the app on an iOS device and your certificate does not meet Apple's certificate requirements.

you are using an earlier version of the Confluence Data Center and Server mobile app that did not allow HTTP connections.

your site has HTTPS enabled, but your proxy is not configured to allow TLS 1.2 traffic.

your certificate is missing an intermediate CA, affecting the certificate chain.the Certificate Authority (CA) is unknown, or is not one that Android / iOS trusts by default (for example it might be a new CA that is not yet trusted, or a private CA).

The errors above appear when you've entered a HTTPS address, but the app can't get a HTTPS connection to your site. Either you're not using HTTPS, there's a problem with your site's certificate, or it's not trusted by this device.

Error occurred while connecting to ssl