Windows Mail server errors 0x800ccc67, 0x800ccc90 & 0x800ccc19 running Windows Vista Home Premium, Windows Mail v.6.0.6000.16386 and Avast v 7.0.1466 both sending & receiving

Hello and thank you for taking the time to read over my issues and for any help that you may offer.

I am running Vista Home Premium, Windows Mail v. 6.0.6000.16386  and AVAST Free program Ver. 7.0.1466 .  When searching the error codes that I am getting I can see this this may be an issue with the anti-virus software but nobody is stating how to fix the issues. 

First error:  Your (either  SMTP/POP3) Server has not responded in 90 seconds.  Would you like to wait 90 seconds for the server to respond?   does not matter if I wait a few times or even increase the timeout threshold. 

Error Numbers:  0x800ccc19, 0x800ccc67 & 0x800ccc90

Concurrent Connection limit in Avast exceeded.  (Pass:0, Process;WinMail.exe [50]); port 25, server (SSL): No, Server Error 421,  <insert Error Numbers Here>

I have posted this same message on the Avast Forums at:    but have not received any responses.  Any help would be greatly appreciated.  Please do not hesitate to contact me should you have any questions.  I thank you in advance for any help that you may be able to provide. 

thank You,

Question Info

Last updated January 9, 2020 Views 3,792 Applies to:

Glad to hear it is fixed. It was most likely the e-mail scanning feature of Avast and most other AV programs. Keep the following in mind should this happen again.


Turning off e-mail scanning is safe. See:

Why you don't need your anti-virus to scan your email:

Turn off email scanning in your antivirus software:

And this is from Symantec, but applies to all anti-virus programs.


Is my computer still protected against viruses if I disable Email Scanning?

Disabling Email Scanning does not leave you unprotected against viruses that are distributed as email attachments. Norton AntiVirus Auto-Protect scans incoming files as they are saved to your hard drive, including email and email attachments. Email Scanning is just another layer on top of this. To make sure that Auto-Protect is providing the maximum protection, keep Auto-Protect enabled and run LiveUpdate regularly to ensure that you have the most recent virus definitions. 

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☞ Avoid a post. Backup your data. ☜

Bruce Hagen
MVP: 2004 ~ 2010
2014 ~ Present
Imperial Beach, CA

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