Fix Untrusted SSL Certificate Authority Error in Adobe Apps on Android
Question details
Users are unable to sign into Adobe mobile applications due to an SSL authentication error, even when web browser logins work perfectly.
- Product
- Adobe Reader and Adobe Scan
- Device & OS
- Android
- Scenario
- Attempting to authenticate or sign in to an Adobe application using a personal or corporate account on an Android device.
- Observed behavior
- The application blocks the sign-in process and displays the error message: 'An error occurred while authenticating. The SSL certificate authority is not trusted.'
Ensure you have your Adobe account credentials ready, as you may need to log back in after adjusting network settings or clearing app data.
Disable Active VPNs and Adblockers
VPNs and system-wide adblockers can intercept secure connections, causing the app to reject the SSL certificate.
Many Android security applications, adblockers (like AdGuard), and VPNs use custom certificates to filter web traffic. While mobile browsers often bypass these or have updated root certificates, Adobe's strict app security will reject modified connections and trigger the SSL error.
Navigate to your device Settings and tap on 'Network & internet' or 'Connections' depending on your Android version.
Tap on 'VPN' to view any active virtual private networks or filtering apps.
Toggle off any active VPN connections or adblockers currently running on the device.
Close the Adobe app from your recent apps menu, reopen it, and attempt to sign in again.
Switch Networks and Correct System Time
Incorrect device time or restrictive corporate Wi-Fi networks can invalidate SSL certificates.
Clear App Data and Update the App
Corrupted cache files or outdated app versions can cause persistent authentication loops and certificate errors.
Experience Seamless PDF Viewing and Editing with WPS Office
If persistent SSL authentication errors are locking you out of your important documents, consider switching to WPS Office. It provides a lightweight, hassle-free environment to view, edit, and scan PDFs on Android without constant sign-in roadblocks.
- 1. Install the App: Download WPS Office for free from the Google Play Store on your Android device.
- 2. Open Your Documents: Launch WPS Office and grant local file access to instantly view all PDFs stored on your phone.
- 3. Edit and Annotate: Use the dedicated PDF tools to highlight text, add signatures, or convert files without complex authentication errors.
Frequently Asked Questions
Why does the SSL certificate error only happen on the app and not the mobile browser?
Mobile web browsers often use their own updated lists of trusted root certificates and can gracefully bypass minor network discrepancies. In contrast, dedicated apps rely strictly on the Android operating system's certificate store, which can trigger errors if network traffic is intercepted by a VPN or MDM profile.
Can my company's Mobile Device Management (MDM) cause this Adobe SSL error?
Yes. Corporate MDMs and company Wi-Fi networks frequently use custom security certificates to monitor traffic. If the Adobe app's security protocols do not recognize this custom corporate certificate as trusted, it will block the login attempt.
How do I access my Adobe PDFs if the app continues to fail?
If you cannot resolve the SSL error within the app, you can log into your Adobe account through your mobile web browser to access cloud files, or you can switch to a versatile alternative like WPS Office to read and edit your local PDF files without needing an Adobe login.
Will I lose my scanned documents if I clear the Adobe Scan app data?
If your scanned documents were already synced to the Adobe Document Cloud, they are safe and will reappear once you successfully log back in. However, any recent scans that failed to upload before you clear the app data will be deleted.
