OWA - Blocked via Firewall

Over the course of a week...

1. I used Windows Defender exclusively, and had no issues.

2. I bought a Norton Core Router (still in the mail - not involved yet).

3. I decided to install Norton software (with my newfound subscription) while I waited for the Core router to arrive.  Immediately I could no longer send/draft/attach emails on my company's Outlook Web App Site (A web mail client hosted on my company's Exchange Server).  The interface became unpredictable and sluggish.  I could login, and I could receive mail.

4. I tried three different browsers, and adding a variety of traffic rules to Norton firewall software.  Nothing worked

5. I called help support twice; they were polite, but not of any help.  Despite Norton being the only change on this PC they were convinced Norton did not cause this problem ...I was not.

6. I uninstalled Norton, deleted any instance of Norton or Symantec from the registry, and it still did not work.

7. I reset the Windows Defender Firewall settings to default and everything worked perfect again.

So here is what we know: The problem was caused by Norton, a change was applied to the firewall that stayed in place on the Windows Defender firewall preventing access to the site even after uninstalling Norton.  

Here is what I need: I would love to install Norton again since I just bought the Core router, and I am not the biggest fan of Windows Defender, but I need a solution for this problem.  There seems to be a few instances of this problem in the forum with no solution.  I would love for everyone to have a solution to this problem.

 

 

 

 

I could view and open emails, but it was glitchy. Emails took a while to appear in both pop outs and in the preview pane; sometimes requiring a refresh. I did not try to download an attachment.

Let us know how the Core router works for you; I appreciate the information so far. 

One further question; when you had the issue with Norton and OWA, could you view your email but could not actually edit / send any?  You could fully open and read emails / download attachments, etc. ?

It is a personal computer; normally part of a residential Wi-Fi network.

In other news Core router arrived in the mail today. I should be able to get it up and running within the next week or two.

One other point of interest: is this computer part of Domain (usually a business based system) or a local Workgroup ?

No proxy or VPN

Internet Explorer works best with the outlook web app, but I had the same problem with Edge and Chrome.

Factory fresh Windows 10 on the PC.

Hmm... interesting problem.  Can I ask for some additional information?

What version of Windows are you using?  If this is Win10, was it an upgrade (from Win7, 8, 8.1, etc.) or a clean installation (factory fresh install)?  Is there a proxy or VPN involved with accessing your company's server(s)?  Which weeb browser do you usually use for the web mail (Outlook Web App Site) connection?