I have done 2 -3 times factory reset in last one week. I am unable to set the Chromecast from my mobile. Everytime it is giving an error like "unable to authenticate". Please help me.
You need to set the time on your phone to March 8th before you can add chromecast in the Home app. After that, keep chromecast on. Chromecast will be updated to fix the problem and then it will work normally.
