Chiming in to note that the error is not exclusive to iPhones and IPads. I had my home security service installed on the 15th and the app worked for that evening, but hasn't worked since. I've uninstalled/reinstalled the app, restarted the phone, and verified my login information.
Any clues as to what the situation is?
We have identified the root cause for the 43500 error & are planning to issue a fix tomorrow. Please try again tomorrow evening. Sorry for the inconvenience.
The issue with the 43500 error message was fixed earlier today. Please try using the XFINITY Home mobile app now & let me know if you continue to experience issues. Thank you for your patience.
Are you logging in with the primary Xfinity Home Comcast email account that you signed up with? Our mobile app only allows you to login with that address even though our other sites may allow you to use secondary addresses. We are currently working to resolve this issue.
I would advise contacting ComcastShannon if you are still experiencing this issue.
Because this is an old thread and the original issue has been corrected, I am going to close this thread.