Can't log in to anything without getting message to log in to myattwg.com

Yes, I was asking KiltedTim. :)

In Sys Prefs>Profiles, is there anything there?

Make a New Location, Using network locations in Mac OS X ...

http://support.apple.com/kb/HT2712


System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.

System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.

The interface that connects to the Internet should be dragged to the top of the list.

Sys Prefs>Network>highlight the Interface you're using>Advanced>TCP/IP>Configure IPv4: Using DHCP.


If using Wifi, instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.

System Preferences>Network>choose interface>Advanced>Proxies Tab, make sure none are set, like for HTTP & HTTPS.

System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...

8.8.8.8

8.8.4.4

1.1.1.1

9.9.9.9

Apply.

Sounds like you picked up some Adware...

Network Records for: myattwg.com

Whois query for: 156.255.40.148

Results returned from whois.arin.net:

NetRange: 156.255.0.0 - 156.255.255.255

CIDR: 156.255.0.0/16

NetName: AFRINIC-ERX-156-255-0-0

NetHandle: NET-156-255-0-0-1

Parent: NET156 (NET-156-0-0-0-0)

NetType: Transferred to AfriNIC

OriginAS:

Organization: African Network Information Center (AFRINIC)

RegDate: 2010-11-03

Updated: 2010-11-17

Comment: This IP address range is under AFRINIC responsibility.

Comment: Please see http://www.afrinic.net/ for further details,

Comment: or check the WHOIS server located at whois.afrinic.net.

Ref: https://rdap.arin.net/registry/ip/156.255.0.0

ResourceLink: http://afrinic.net/en/services/whois-query

ResourceLink: whois.afrinic.net

OrgName: African Network Information Center

OrgId: AFRINIC

Address: Level 11ABC

Address: Raffles Tower

Address: Lot 19, Cybercity

City: Ebene

StateProv:

PostalCode:

Country: MU

RegDate: 2004-05-17

Updated: 2015-05-04

Comment: AfriNIC - http://www.afrinic.net

Comment: The African & Indian Ocean Internet Registry

Ref: https://rdap.arin.net/registry/entity/AFRINIC

ReferralServer: whois://whois.afrinic.net

ResourceLink: http://afrinic.net/en/services/whois-query

OrgAbuseHandle: GENER11-ARIN

OrgAbuseName: Generic POC

OrgAbusePhone: +230 4666616

OrgAbuseEmail: abusepoc@afrinic.net

OrgAbuseRef: https://rdap.arin.net/registry/entity/GENER11-ARIN

OrgTechHandle: GENER11-ARIN

OrgTechName: Generic POC

OrgTechPhone: +230 4666616

OrgTechEmail: abusepoc@afrinic.net

OrgTechRef: https://rdap.arin.net/registry/entity/GENER11-ARIN

Look in Sys Prefs for Profiles & delete any there.

System Preferences>Network>choose interface>Advanced>Proxies Tab, make sure none are set, like for HTTP & HTTPS.

Safe Boot from the HD, (holding Shift key down at startup), does the problem occur in Safe Mode?

EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.

http://www.etresoft.com/etrecheck

Pastebin is a good place to paste the whole report...

https://pastebin.com/

Or use the paperclip at the bottom of a Reply to attach the full report here. :)

Workable but harder for me to work with...the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck.

There is also free Malwarebytes which may take care of it...

https://www.malwarebytes.com/mac/

No site found

Your request did not find a corresponding site in the web server!

Possible Causes:

You did not bind this domain name or IP to the corresponding site!

The configuration file does not take effect!

How to solve:

Check whether it is bound to the corresponding site. If it is confirmed, try reloading the web service.

Check if the port is correct;

If you use a CDN product, please try to clear the CDN cache;

For ordinary website visitors, please contact the webmaster;

-----------------------

没有找到站点

您的请求在Web服务器中没有找到对应的站点！

可能原因：

您没有将此域名或IP绑定到对应站点!

配置文件未生效!

如何解决：

检查是否已经绑定到对应站点，若确认已绑定，请尝试重载Web服务；

检查端口是否正确；

若您使用了CDN产品，请尝试清除CDN缓存；

普通网站访客，请联系网站管理员；

If you're getting prompted to log into myattwg.att.com that indicates a problem with your AT&T account, usually related to billing.

Contact AT&T.

What device are you replying on now?

Who is your Internet provider?

If it's AT&T, chances are they've shut you down because you didn't pay your bill.

Where does myattwg.com take you on your Mac?