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Not Sure Where To Post This To


Not Sure Where To Post This To

  • Having a problem with accessing my Yahoo e-mail account.  Says I need to contact my ISP provider - would be AT&T?  I am getting a Yahoo Error 999 - can you help me, because the info Yahoo provided is not really clear to me.

Thank you, Darlene

  • RE: Yahoo - Error 999 (KMM133187176V72833L0KM)‏
From: Yahoo! Customer Care (
Sent: Fri 9/02/11 7:14 AM
To: {Personal content removed for your safety}
Attachments, pictures and links in this message have been blocked for your safety.

Thank you for contacting Yahoo! Customer Care.

We're sorry you've had difficulty accessing Yahoo!. The error you
received is typically caused by unusual activity from either your
computer or your Internet Service Provider (ISP) to Yahoo!. While this
type of problem is usually temporary, if you continue to experience this
error, we recommend that you try the following suggestions:

1. Contact your ISP and let them know you are experiencing connectivity
problems with Yahoo!. You may have difficulty accessing Yahoo! if we
detect unusual network traffic coming from your ISP. Only your ISP will
be able to address and resolve this abnormal activity.

2. Check that you are not using any third party software program or
application to access Yahoo! services. Please keep in mind that these
types of programs are not supported by Yahoo! and may violate our Terms
of Service, and therefore may contribute to your receiving this error.

3. If you have not scanned your computer for spyware and viruses, please
do so now. Some spyware programs and computer viruses will run separate
programs on your computer for a variety of purposes, sometimes slowing
your computer down in the process, and even preventing you from
accessing certain Internet sites such as Yahoo!.

For detailed information on virus protection, please visit:

For detailed information on spyware, please visit:

4. You may want to try accessing Yahoo! through a different computer or
through a different Internet connection.

We hope this is resolved for you soon so that you may continue to use


Yahoo! Customer Care


For assistance with all Yahoo! services please visit:

Original Message Follows:

For future correspondence with Yahoo!, you can refer to this incident
using the following incident ID:

Yahoo ID: {Personal content removed for your safety}

Browser: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0;
GTB7.1; InfoPath.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR
3.0.4506.2152; .NET CLR 3.5.30729)
Date Originated: Friday September 02, 2011 - 14:12:43

Message 1 of 2

Re: Not Sure Where To Post This To

Hi darhopevan,


We apologize for the inconvenience caused due to the error message and would be glad to fix the issue.


The error 999 is usually a temporary error in the Yahoo mail account.


You can try clearing the temporary internet files and cookies in the browser ( Internet Explorer, Firefox).


Please refer to the link given below which would have steps on how to clear the browser cache


Then you can sign out (if you are already signed in) and sign in again.



If the issue persists, and  for further assistance and if you are located in the one of the following states AR, CA, CT, IL, IN, KS, MI, MO, NV, OH, OK, TX, & WI, please contact e-Chat support from the web link provided below


Remember to always mark items that you find useful as "Accepted Solutions”, you can even mark multiple
in a single thread.  This will help other users find this information too!!

Employee Contributor*
*I am an AT&T employee and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.
Message 2 of 2
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