@djescobar973 

Some things to check:

• Is it ob all devices or just one?
• If using a VPN, try turning it off
• Try bypassing the router and connect direct to the modem and see if you still have the issue
• May be your security software. 
• Try a different browser (has been reported that FIrefox proxy server can cause this issue).
• Also you may need to clear cookies,data, and such in your browser as that has caused the issue.
• May be that your IP address is blacklisted and you may need to contact your ISP to to get a new IP address.

Let us know what works for you.

@djescobar973 

Using Chrome? Check these sites out:

https://support.google.com/chrome/thread/22012584/access-denied-by-chrome-to-one-single-website-and-only-one-fox-news-12-4-2019?hl=en

https://www.techbout.com/err-networ`k-access-denied-error-in-chrome-39594/

Seem to be a Chrome blockage as a Google search of 'reference 18' got a lot of hits for Chrome.

Using Firefox, well, a REAL old one is here:

https://support.mozilla.org/en-US/questions/1003223

Might still work?