Can't access a website

Hello:

I for the past month, I have been trying to get onto the HTC website for some customer service for my phone.
For some reason I keep getting an error message "This Webpage Not Available, ERR_Name_Resolution_Failed".

I can get the website at work, but not at home. I have previously had no problems getting on the website before last month.

I have tried everything.....running internet security cleaner (found nothing), ran all the "cleaning" and filtering programs I have, turned off the firewall and spam programs (still got the error message)....I've tried tons of ways, looked online for help, and have already done all of the suggestions people suggested. I still get the error message on www.htc.com and www.htc.com/us/.

I have even tried HTC Canada, HTC Japan, HTC UK, and still get the same error message!

This is the ONLY website I have problems with. I can get onto any other website, just not this one.

What the H is going on?????