RunningMan:

 

Is it resolving to the same IP address as other devices on your network?

 

Malware/virus?

 

Nothing detected. 

My path to amazon is similar to yours, ie via Mercury (as55850.net then arlion). While i do not get responses from a number of interim routers, i do get a response from the end host.

I have spent another day I will never get back trying to figure this out. I have tried literally everything I can think of, cache clearing, rebooting, DNS, power cycle, firewall, rubbing my belly one way while circling my ear another. 

The issue is frankly over my head but I have learned some things. First, Amazon seems to be the only site affected by this. It is not related to the router or my ISP because other computers on the same connection don’t have the problem. Changing browsers doesn’t make any difference. I tried Chrome, Edge and Firefox. I happened to have another drive with a similar but not identical Windows 10 installation and that also works fine. The problem is specific to this one installation on this particular drive. 

I don’t have a lot of networking know-how, but everything seems to point to a security certificate issue. Somehow I must have managed to bugger the certificate for Amazon. It is the kind of thing I seem to do. Firefox is more informative than Chrome and amongst other things it reports a “PR-END-OF-FILE-ERROR”, then says a secure connection has failed, and adds that the “authenticity of received data could not be verified”. Interesting information I’m sure, but I don’t know what to do with it. Ping is normal and other things I have seen seem to indicate that the connection is okay but the data is not being allowed through.

I would really like to solve this, if I possibly can, without having to reinstall windows and lose all my settings. I imagine there must be a way to download or update the Amazon certificates but I don’t know how to go about that. Any help would be most welcome.

Have you tried creating a new Firefox to test?

Have you changed Firefox SSL settings at all, even if at someone else's recommendation?

What AV software are you running? If the software has an option to scan web access, have you tried disabling it?

Can you provide more details? Screenshots, why you think it's a certificate issue, check your hosts file has nothing weird in it, check other computers, etc. Put everything into one post.

freitasm:

 

Have you tried creating a new Firefox to test?

 

Have you changed Firefox SSL settings at all, even if at someone else's recommendation?

 

What AV software are you running? If the software has an option to scan web access, have you tried disabling it?

 

 

 

The Firefox I am using is new. I downloaded it just for the test. It is not a browser I normally use. I haven't touched an settings. AV is Defender and Malwarebytes, passive only. Not sure what the scan options are. I will have to check later. 

timmmay:

 

Can you provide more details? Screenshots, why you think it's a certificate issue, check your hosts file has nothing weird in it, check other computers, etc. Put everything into one post.

 

Thanks for helping. I did check HOSTS files and other computers. I will try to do screenshots tomorrow. I am buggered. Other computers work normally. No issues, only on this one, which happens to be the main one I use.

You'll get a cert error if it is connecting to a host other than amazon

On a computer that works, can you open a command prompt can you do a nslookup www.amazon.com?

You should receive a response like this:

 
Server:  UnKnown
Address:  192.168.2.1
 
Name:    d3ag4hukkh62yn.cloudfront.net
Addresses:  2600:9000:2086:fc00:7:49a5:5fd3:b641
   2600:9000:2086:4a00:7:49a5:5fd3:b641
   2600:9000:2086:4600:7:49a5:5fd3:b641
   2600:9000:2086:6400:7:49a5:5fd3:b641
   2600:9000:2086:f600:7:49a5:5fd3:b641
   2600:9000:2086:5000:7:49a5:5fd3:b641
   2600:9000:2086:7a00:7:49a5:5fd3:b641
   2600:9000:2086:f000:7:49a5:5fd3:b641
   54.192.239.156
Aliases:  www.amazon.com
   tp.47cf2c8c9-frontier.amazon.com
 

Now repeat it on the computer with the problem. If you are connected to the same network, the response should be the same. If they are different, it could be something on that computer.\

I am trying to work my way through all this again this morning. I have done numerous tests and checked everything I can think of. I just tried changing the DNS server again on the adapter setting to Google (8.8.8.8). Tested, flushed, rebooted, no difference. Amazon still times out.

It did seem to work normally when I used a USA VPN. 

Changing browser makes no difference.

One thing I noticed when doing nslookup is that it always reports the server as 
ec2-54-79-3-18.ap-southeast-2.compute.amazonaws.com but when I use the VPN it goes back to unknown and everything works as it should. 

I thought this might be related to security certificates because I couldn’t think of anything else left and when trying in Chrome browser it would switch from HTTPS to HTTP. Sometimes there was a brief notification suggesting a security problem but I couldn’t capture that.

Here are the images I did get using Edge browser:

networkn: Try creating a new user on your computer and see if the problem follows the test user. If it does then it's an OS or networking problem. If not, it's something in your profile. Have you tried in safe mode with networking? Or a clean boot?

Yes thanks. Good suggestions and I tried both, no difference.

The first 2 lines of the response from nslookup shows the information about the DNS server your system is using to do the lookup.
So for whatever reason your computer is using ec2-54-79-3-18.ap-southeast-2.compute.amazonaws.com as its default DNS.

Can you execute the command ipconfig /all  and post the output here

I should note that the DNS servers are from DNS4ME, but I have tested this several times with Google and other servers and it didn't make any difference.