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Occasional Member - Level 2

Concur Travel App

I'm an admin.  I have a traveler who is a sponsored guest who is getting the error Unable to Sign in  and/or he will get to the 2FA piece and it says the server encountered an error and to contact the administrator.


Any idea what's going on before I put in a ticket?

SAP Concur Employee
SAP Concur Employee

@almaes This issue can happen because of cached data, an outdated version of the SAP Concur mobile app, or if the device is connected to the internet via some specific VPN and this VPN replaces the root certificate.

The most effective way to resolve the error message is to clear the app's cache > uninstall the app > download it again, and also disconnect from any VPN that the mobile device might be connected to.

To clear the cache, uninstall, and download the mobile app again, please follow the steps below:
1. Open the SAP Concur mobile application,
2. Tap Done (iOS) or X (Android) in the upper left corner,
3. Double tap with two fingers on the SAP Concur Logo to enter the settings menu,
4. Go to System > Clear Cache,
5. Delete the SAP Concur app from the phone,
6. Restart the phone,
7. After the restart, reinstall the SAP Concur app.

Before trying to log in again, make sure to also disconnect from any VPN that the mobile device might be connected to.


Remember to tag me if you respond or feel free to mark this post as Solved if you don't have further questions or comments. To tag me on your response, you click the Reply button, first thing to type is @. This should bring up the username of the person you are replying to.

Thank you,
Melanie Taufen
SAP Concur Community Moderator
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New Member - Level 1

What if the user isn't connected to any kind of VPN? I've already performed the troubleshooting steps you mentioned above, but haven't had any success. User is attempting to sign into the IOS Concur app.

Occasional Member - Level 2

Thank you.   I will see if this helps.