Why is my Galaxy S5 suddenly giving me er101 invalid certificate on wifi calling?

[AC Question]

My wifi calling has been working fine. Now, after leaving the wifi area and returning, I first got DNS error, so I added address. Now am getting er101-invalid certificate. Turned off wifi calling, wifi and rebooted phone. No help.

 

[the tall guy]

Hi, did you manage to get this issue resolved? does this issue only happen with your phone or others that are using the WiFi?

 

[kgm4714]

I don't know about OP. But I started getting this ER101 on my Galaxy S5 on Christmas. The phone doesn't care which network it's on or who the ISP is; it throws this ER101. My wife's Kyocera Hydrowave has no problem with Wi-Fi calling. We're both on Metro PCS. I've been through the ***** checklists: Turned Wi-Fi calling off and on; turned Wi-Fi off and on; cycled power on the phone; turned off the phone, pulled the SIM card, re-seated the SIM, turned the phone back on. Still get the error message. Would love to know how to fix this once and for all on all nets, all ISPs.

 

[kgm4714]

I've been through the ***** checklists

Are you serious!? This forum censors ID10T!?