How to send a request to www.yahoo.com server located else where and receive a response . you are connected to a LAN

try after some time or hours.
yahoo server is down

sometimes YM is very busy for connecting people..that is why you are unable to connect but try reconnecting again...it works

be sure your password and username is correct and your internet connection is stable...

Bruno
Start your troubleshooting with a clean browser
Download 'ccleaner' and use it daily. Run it through a couple of times,using the factory settings and the 'Run Cleaner' control until 0 bytes are seen to be cleaned following a scan
Run the 'Registry' from the left hand toolbar but 'Save' any changes after opting to 'repair' errors.Never make changes to your Registry without saving the information.
http://www.filehippo.com/download_cclean...

On the sign-in page click Messenger > Connection Preferences - make sure there is nothing untoward in the lower 2 boxes - if incorrect make changes using the drop-box options > OK

Copy this Yahoo secure site URL
https://www.yahoo.com/
Open Yahoo Messenger > Tools > Internet Options > Connection tab > LAN settings > Uncheck everything then check 'Automatically detect settings' and 'Use a proxy server' > Advanced > Paste the address in the secure box and type 5050 in the port box > OK
Sign in.
Hope this helps.

refresh or reinstall and stall back again your yahoo. must be some virus causing this

re-intsall it

Please uninstall the messenger, download and install latest yahoo messenger and try. Still if you are failed, try login with http://webmessenger.yahoo.com, let us know the result.
Thanks for joining us.
Have a good day.

https://support.microsoft.com/en-us/help/972034/how-can-i-reset-the-hosts-file-back-to-the-default

Checking virtual IP servers...
[VIP Raw] Connecting to Virtual IP server 98.136.48.32... [PASSED]
[VIP Raw] Sending HTTP request to the server... [PASSED]
[VIP Raw] Receiving response... [PASSED]
[VIP Raw] Checking HTTP response code... [PASSED]
[VIP Raw] Parsing connection server IP address... [PASSED]
[VIP Raw] Connecting to Virtual IP server 67.195.186.241... [PASSED]
[VIP Raw] Sending HTTP request to the server... [PASSED]
[VIP Raw] Receiving response... [PASSED]
[VIP Raw] Checking HTTP response code... [PASSED]
[VIP Raw] Parsing connection server IP address... [PASSED]
[VIP Raw] PASSED *** 98.136.48.85 ***

Checking connection servers...
[CS Raw] Connecting to connection server port '5050'... [PASSED]
[CS Raw] Sending port check command... [PASSED]
[CS Raw] PASSED

Checking login servers...
[Login] FAILED
*** 'COMPONENT_TYPE_YCP' YCPError: 'FND.0001' ***

elisei_eli2008

Yahoo mail problem? Read this page I wrote earlier, you may be able to get in, if not, change to gmail, its much better.

http://www.fixya.com/support/r2927552-login_yahoo_mail_or_yahoo_mail_problems