I actually solved this after 2 days of research and it would not let me reply to the previous threads so I thought I would post it here in hopes to help others!
After trying NUMEROUS things suggested by x y z all over the net, to Spectrum customer service???...this is what worked for me.
I realized my roadrunner email being a set up as a POP3 account was a problem and needed to be changed to IMAP. I did this process with a test account before I changed my main accounts for fear of losing everything, but this worked for me.
Delete your email account from Outlook. FIRST I did a backup:
In Outlook 2013, hit "File" in upper left hand corner and select "Open and Export"
Next, select "Import/Export"
A box will pop up, select "Export to a File" and click NEXT
Select "Outlook Data File (.pst)" and Finish
Now select FILE again and this time select "Account Settings" on the right. From here you can delete the problematic email account. Once it is deleted, (from the same "Account Settings") you can then add an account.
Now add the same account.
Your Name : this should be how you want your name to display on your email
Email: full email address
Password: your password for this account
***Before you hit Next, be sure to check the select at the bottom left which says "Manual Setup or Additional Server...."
On the next page:
Email: Full address
Account Type: IMAP (it should be on POP3 as a default, you need to click on that and change it to IMAP)
Incoming Server: mail.brighthouse.com (this was so for me in the Tampa Bay area...some of you may have had Time Warner so check on your provider's site)
Outgoing Server: mail.brighthouse.com
User Name: FULL email address ex. *** Email address is removed for privacy ***
Password: same pswd used to sign into this email
The box "Remember Password" should be checked below
DO NOT hit Next or Finish...Click "More Settings" on the bottom right.
Click on "Outgoing Server" tab and select/check "My outgoing SMTP server requires authentication". Make sure "use my same settings" is selected below that.
Now click on the "Advanced" tab and set up the servers as follows:
Incoming Server (IMAP) 993
Below that : "Use the following type of encryption" select SSL
Outgoing Server (SMTP) 587
Below that: "Use the following type of encryption" select TLS *make sure once you select this to change the Outgoing SMTP to 587 as it may change
Once you've finished your advanced settings, hit OK and then Finish. Your email account will now appear and should auto-populate all your emails, folders, etc.
Good luck! I hope it works for you. I understand your frustration as it took me days to figure this out and no real help from Spectrum (oh, the email works from their server so it's a Microsoft problem). NOO..all my other non Spectrum accounts work just fine in Outlook!