I have been using the xfinity stream app on my roku for quite sometime, however 2 days ago it no longer works and I keep getting error createDrmSession.403-102. It states that this device can only access Xfinity Stream on your in-home Xfiity Wifi, it is connected to my home wifi. I've dealt with tech support (elevated to level 3) for 3 days now, have uninstalled and reinstalled the stream app, have logged out and back in my Roku device, refreshed and reprovisioned my modem (xfinity leased modem), even unplugged both my modem and home router overnight. We haven't changed anything at all with any of our equipment. It worked fine Monday (8/26) morning and didn't work when we got home Monday night. The only thing that has changed with our account should've had no effect on this. Somehow, my mom's email/username (she lives across the street from me) got moved onto my account and we just discovered it on Monday when she tried to reset her password. We found out that it's been that way for several months, but comcast wouldn't let her reset the password until they moved it back to my dad's account. They don't have a roku device and her username has NEVER been signed it to any of my Roku devices, so moving her username off my account shouldn't have affected anything, but I came home immediately after spending 2 hours in a comcast chat getting all of her stuff resolved, turned on my TV and got this error message when I tried to open the stream app. My internet and ALL other apps still work perfectly and I've had no interruption in my regular "cable TV". This morning, I started watching the stream app on my phone and it worked perfectly, but when I tried to 'cast' my phone to my Roku TV, I got the error shown in the attached photo.
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