Sorry, Unable to process request at this time -- error 999.

http://www.murraymoffatt.com/software-problem-0011.html

check this out for further reference

Maybe this website could help you：http://www.astahost.com/info.php/yahoo33-unable-process-request-time-error-999-message-solutions_t20124.html

Good luck!

Is due to the service, and your broadband . You can re do it again

Error 999 is a sign that Yahoo's defense is in effect.

"This error appears to be caused by some sort of bandwidth limiting system that Yahoo has put in place on their servers. Once you have exceeded your allotted bandwidth for a specific period of time Yahoo gives you this Error 999 message and doesn't allow you to access the service."

It appears that Yahoo uses your IP address to track the amount of traffic you're generating on Yahoo, and once you reach the limit you get blocked by the Unable to process request at this time -- error 999 message. Once triggered you will find that your IP address has been blocked for a period of time, somewhere between 2 and 24 hours usually.

Suggestion: Clear your browser's cookies and cache (temporary files).

Chances of working:Low. From what I can tell Yahoo isn't using cookies to remember that you've been blocked, so clearing your cookies should have no effect.

Good luck!

ok so if you have a yahoo account you should be at https://login.yahoo.com/config/mail?.intl=us

if you are signing up you should be at

https://edit.yahoo.com/registration?.intl=us&.pd=ym_ver%253D0%2526c%253D%2526ivt%253D%2526sg%253D&new=1&.done=http%3A//mail.yahoo.com&.src=ym&.v=0&.u=3jlkmbh540hkm&partner=&.partner=&pkg=&stepid=&.p=&promo=&.last=



to find out more about the 999 code go here if those dont help..

http://www.murraymoffatt.com/software-problem-0011.html

Hello,

Are you using google or yahoo? Google is blocking many that use automated programs.

"Don’t use unauthorized computer programs to submit pages, check rankings, etc. Such programs consume computing resources and violate our Terms of Service. Google does not recommend the use of products such as WebPosition Gold™ that send automatic or programmatic queries to Google." I suggest that you don't use the automated programs with the same computer you are checking your mail with. http://www.fixya.com/support/t1868478-unable_check_mail where as yahoo only does sometimes

◘ Error 999 IS a Ban ... a censor tool, used by Yahoo

Help-link:- (( http://www.murraymoffatt.com/software-pr... )

◘ You can do a few things if you are impatient ( re cleanup computer, dump temp files etc) but this will not help error 999 the best option if you have a dynamic IP is to do a full "flick of the switch", and when you power back up you will come back with a new IP, ( with some turn off comp for 8 hours), but usually you get a new IP when you power up straight after the shutdown, you can continue posting the link under the new IP. 

◘ Best quick fix >>>> login to your Yahoo! mail via an international server...http://world.yahoo.com/ and access your mail / ya / 360 /games from there by clicking the mail icon, stay within that browser. That, is the best temp fix for the system

◘ Also reply to Yahoo using the link they give you in that Error 999 page. I did it once or twice and I was free from the Error. It has been said that answering, voting too quickly may cause that Error. So give some gap of 2-3 mins between any two Questions you answer.

Almost Always I got this problem solved by following the above suggestions

Error 999 on Yahoo! products is an error to say that, well, there is an error! This error code, Error 999, does not stand for any specific error and is more or less a code for any Yahoo! error.

However, this message is generally shown for when Yahoo! limits the bandwidth usage of a person on Yahoo! software for some reason.
This message can be shown when many things are pressed or done through Yahoo! software, as a way to prevent misuse and abuse.

The easiest way to solve this issue is to wait some time and try again later. This should be only a temporary error message, and things should be back to normal after some time.

visit some solus for same.... u might be knowingall these . still have a try
bye]

http://ycoderscookbook.com/tutorials/999_Error.html