Several days ago Yahoo! made some changes that affected YTK Enhanced's connectivity to Yahoo! Messenger & the YMSG chat servers. I temporarily issued a quick registry fix that helped for a few days. As of yesterday my fix now negatively affects YTK's chat connection (again, due to Yahoo! making another change with their servers).

So... YOU NEED TO EITHER UNINSTALL Yahoo! Messenger versions 9.0 - 10.0 if you're using one of these versions OR use this new fix (which is what Yahoo! now uses for their server lookups) to fix your YTK connection issues.

I've removed the old and now non-working connection fix from our server that I previously issued. You can either uninstall Yahoo! Messenger (9.0 or 10.0) or simply use this new YTK connection fix to undo what the old 'fix' did.

You can download the new *working* connection fix HERE --> http://ytkpro.com/YTK-Conn-Fix.zip

If you are using Yahoo! Messenger versions 8.0 or 8.1 then you do not need this new connection fix.

This new fix simply restores the changes made by the old and now obsolete one I issued which will save you the time of uninstalling & reinstalling Yahoo! Messenger (unless you want/need to do this for whatever reason).

 

YTK Enhanced Version 2.6 Build 98 Beta Release Notes:

--> Updated vHook.dll's connection interception hooks for the new YMSG chat servers so connectivity is now properly restored.

--> Added all of the new *currently working only* YMSG chat servers to YTK's server selector list.

--> Fixed the PC to PC Call Keep-Alive option since it wasn't being disabled properly (was still enabled even after unchecking it and starting YTK again).

--> Removed (temporarily) the captchaes1.a1.chat.ac4.yahoo.com server from the Chat Captcha server selector list due to it's numerous problems such as it's occasional unavailability, the room list not being sent after completing the captcha challenge, and being logged out of chat after 5 minutes of not typing (idling).

--> Added all of Yahoo!'s Messenger update check servers (for checking new versions & build availability & downloading) to YTK's YM Update Server Selector.

--> Added all the new PC to PC Call Voice & Video/Phone-in|Phone-Out servers to the PC Call Server Selector (except for the -p1, -p2, & -p3 servers which are still being tested before they're added).

--> Fixed a bug in FTTS (File Transfer Type Screening) that was found (privately by myself) which allowed for a disallowed file extension to be sent with a legitimate/allowed file extension allowing dangerous files to be potentially downloaded. This was due to FTTS not handling multi-part file transfers and only single files at a time. Now, if a disallowed file extension is included in a multi-part file transfer the entire packet & session will be dropped/blocked. Future plans I have will simply strip the disallowed files out of a multi-part transfer and only download the allowed ones that are set up according to your allowed file transfer extensions list making it possible to utilize this feature even if a disallowed file type is detected in the transfer request.

--> For now our own custom anti-crack measures have been temporarily removed to decisively verify whether one of the routines was causing problems in YTK's normal operation such as blank chat rooms with no people in them (room list being blank) and/or no chat text being present in the room.

--> Some miscellaneous little fixes here and there including some additional code cleanup and extra validity checks within certain zoned and unhandled YMSG services (packet types).

Make sure you UNINSTALL your current build of YTK Enhanced BEFORE installing this new build!

Download YTK Enhanced Beta Build 98!

 

This is the full list (minus Chinese CNB YMSG servers which can be connected to) of the standard servers.

SP1 Chat Servers:

cs201.msg.sp1.yahoo.com
cs202.msg.sp1.yahoo.com
cs203.msg.sp1.yahoo.com
cs204.msg.sp1.yahoo.com
cs205.msg.sp1.yahoo.com
cs206.msg.sp1.yahoo.com
cs207.msg.sp1.yahoo.com
cs208.msg.sp1.yahoo.com
cs209.msg.sp1.yahoo.com
cs210.msg.sp1.yahoo.com
cs211.msg.sp1.yahoo.com
cs212.msg.sp1.yahoo.com
cs213.msg.sp1.yahoo.com
cs214.msg.sp1.yahoo.com
cs215.msg.sp1.yahoo.com
cs216.msg.sp1.yahoo.com
cs217.msg.sp1.yahoo.com
cs218.msg.sp1.yahoo.com
cs219.msg.sp1.yahoo.com
cs220.msg.sp1.yahoo.com

SP1-Px Chat Servers:

cs201p1.msg.sp1.yahoo.com
cs201p2.msg.sp1.yahoo.com
cs201p3.msg.sp1.yahoo.com
cs201p4.msg.sp1.yahoo.com
cs202p1.msg.sp1.yahoo.com
cs202p2.msg.sp1.yahoo.com
cs202p3.msg.sp1.yahoo.com
cs202p4.msg.sp1.yahoo.com
cs203p1.msg.sp1.yahoo.com
cs203p2.msg.sp1.yahoo.com
cs203p3.msg.sp1.yahoo.com
cs203p4.msg.sp1.yahoo.com
cs204p1.msg.sp1.yahoo.com
cs204p2.msg.sp1.yahoo.com
cs204p3.msg.sp1.yahoo.com
cs204p4.msg.sp1.yahoo.com
cs205p1.msg.sp1.yahoo.com
cs205p2.msg.sp1.yahoo.com
cs205p3.msg.sp1.yahoo.com
cs205p4.msg.sp1.yahoo.com
cs206p1.msg.sp1.yahoo.com
cs206p2.msg.sp1.yahoo.com
cs206p3.msg.sp1.yahoo.com
cs206p4.msg.sp1.yahoo.com
cs207p1.msg.sp1.yahoo.com
cs207p2.msg.sp1.yahoo.com
cs207p3.msg.sp1.yahoo.com
cs207p4.msg.sp1.yahoo.com
cs208p1.msg.sp1.yahoo.com
cs208p2.msg.sp1.yahoo.com
cs208p3.msg.sp1.yahoo.com
cs208p4.msg.sp1.yahoo.com
cs209p1.msg.sp1.yahoo.com
cs209p2.msg.sp1.yahoo.com
cs209p3.msg.sp1.yahoo.com
cs209p4.msg.sp1.yahoo.com
cs210p1.msg.sp1.yahoo.com
cs210p2.msg.sp1.yahoo.com
cs210p3.msg.sp1.yahoo.com
cs210p4.msg.sp1.yahoo.com
cs211p1.msg.sp1.yahoo.com
cs211p2.msg.sp1.yahoo.com
cs211p3.msg.sp1.yahoo.com
cs211p4.msg.sp1.yahoo.com
cs212p1.msg.sp1.yahoo.com
cs212p2.msg.sp1.yahoo.com
cs212p3.msg.sp1.yahoo.com
cs212p4.msg.sp1.yahoo.com
cs213p1.msg.sp1.yahoo.com
cs213p2.msg.sp1.yahoo.com
cs213p3.msg.sp1.yahoo.com
cs213p4.msg.sp1.yahoo.com
cs214p1.msg.sp1.yahoo.com
cs214p2.msg.sp1.yahoo.com
cs214p3.msg.sp1.yahoo.com
cs214p4.msg.sp1.yahoo.com
cs215p1.msg.sp1.yahoo.com
cs215p2.msg.sp1.yahoo.com
cs215p3.msg.sp1.yahoo.com
cs215p4.msg.sp1.yahoo.com
cs216p1.msg.sp1.yahoo.com
cs216p2.msg.sp1.yahoo.com
cs216p3.msg.sp1.yahoo.com
cs216p4.msg.sp1.yahoo.com
cs217p1.msg.sp1.yahoo.com
cs217p2.msg.sp1.yahoo.com
cs217p3.msg.sp1.yahoo.com
cs217p4.msg.sp1.yahoo.com
cs218p1.msg.sp1.yahoo.com
cs218p2.msg.sp1.yahoo.com
cs218p3.msg.sp1.yahoo.com
cs218p4.msg.sp1.yahoo.com
cs219p1.msg.sp1.yahoo.com
cs219p2.msg.sp1.yahoo.com
cs219p3.msg.sp1.yahoo.com
cs219p4.msg.sp1.yahoo.com
cs220p1.msg.sp1.yahoo.com
cs220p2.msg.sp1.yahoo.com
cs220p3.msg.sp1.yahoo.com
cs220p4.msg.sp1.yahoo.com

AC4 Chat Servers:

cs201.msg.ac4.yahoo.com
cs202.msg.ac4.yahoo.com
cs203.msg.ac4.yahoo.com
cs204.msg.ac4.yahoo.com
cs205.msg.ac4.yahoo.com
cs207.msg.ac4.yahoo.com
cs208.msg.ac4.yahoo.com
cs209.msg.ac4.yahoo.com
cs210.msg.ac4.yahoo.com
cs211.msg.ac4.yahoo.com
cs212.msg.ac4.yahoo.com
cs213.msg.ac4.yahoo.com
cs214.msg.ac4.yahoo.com
cs215.msg.ac4.yahoo.com
cs216.msg.ac4.yahoo.com
cs217.msg.ac4.yahoo.com
cs218.msg.ac4.yahoo.com
cs219.msg.ac4.yahoo.com
cs220.msg.ac4.yahoo.com

AC4-Px Servers:

cs201p1.msg.ac4.yahoo.com
cs201p2.msg.ac4.yahoo.com
cs201p3.msg.ac4.yahoo.com
cs201p4.msg.ac4.yahoo.com
cs202p1.msg.ac4.yahoo.com
cs202p2.msg.ac4.yahoo.com
cs202p3.msg.ac4.yahoo.com
cs202p4.msg.ac4.yahoo.com
cs203p1.msg.ac4.yahoo.com
cs203p2.msg.ac4.yahoo.com
cs203p3.msg.ac4.yahoo.com
cs203p4.msg.ac4.yahoo.com
cs204p1.msg.ac4.yahoo.com
cs204p2.msg.ac4.yahoo.com
cs204p3.msg.ac4.yahoo.com
cs204p4.msg.ac4.yahoo.com
cs205p1.msg.ac4.yahoo.com
cs205p2.msg.ac4.yahoo.com
cs205p3.msg.ac4.yahoo.com
cs205p4.msg.ac4.yahoo.com
cs206p1.msg.ac4.yahoo.com
cs206p2.msg.ac4.yahoo.com
cs206p3.msg.ac4.yahoo.com
cs206p4.msg.ac4.yahoo.com
cs207p1.msg.ac4.yahoo.com
cs207p2.msg.ac4.yahoo.com
cs207p3.msg.ac4.yahoo.com
cs207p4.msg.ac4.yahoo.com
cs208p1.msg.ac4.yahoo.com
cs208p2.msg.ac4.yahoo.com
cs208p3.msg.ac4.yahoo.com
cs208p4.msg.ac4.yahoo.com
cs209p1.msg.ac4.yahoo.com
cs209p2.msg.ac4.yahoo.com
cs209p3.msg.ac4.yahoo.com
cs209p4.msg.ac4.yahoo.com
cs210p1.msg.ac4.yahoo.com
cs210p2.msg.ac4.yahoo.com
cs210p3.msg.ac4.yahoo.com
cs210p4.msg.ac4.yahoo.com
cs211p1.msg.ac4.yahoo.com
cs211p2.msg.ac4.yahoo.com
cs211p3.msg.ac4.yahoo.com
cs211p4.msg.ac4.yahoo.com
cs212p1.msg.ac4.yahoo.com
cs212p2.msg.ac4.yahoo.com
cs212p3.msg.ac4.yahoo.com
cs212p4.msg.ac4.yahoo.com
cs213p1.msg.ac4.yahoo.com
cs213p2.msg.ac4.yahoo.com
cs213p3.msg.ac4.yahoo.com
cs213p4.msg.ac4.yahoo.com
cs214p1.msg.ac4.yahoo.com
cs214p2.msg.ac4.yahoo.com
cs214p3.msg.ac4.yahoo.com
cs214p4.msg.ac4.yahoo.com
cs215p1.msg.ac4.yahoo.com
cs215p2.msg.ac4.yahoo.com
cs215p3.msg.ac4.yahoo.com
cs215p4.msg.ac4.yahoo.com
cs216p1.msg.ac4.yahoo.com
cs216p2.msg.ac4.yahoo.com
cs216p3.msg.ac4.yahoo.com
cs216p4.msg.ac4.yahoo.com

*Not Available ~Yet~ But Should Be Any Day Now*

cs217p1.msg.ac4.yahoo.com
cs217p2.msg.ac4.yahoo.com
cs217p3.msg.ac4.yahoo.com
cs217p4.msg.ac4.yahoo.com
cs218p1.msg.ac4.yahoo.com
cs218p2.msg.ac4.yahoo.com
cs218p3.msg.ac4.yahoo.com
cs218p4.msg.ac4.yahoo.com
cs219p1.msg.ac4.yahoo.com
cs219p2.msg.ac4.yahoo.com
cs219p3.msg.ac4.yahoo.com
cs219p4.msg.ac4.yahoo.com
cs220p1.msg.ac4.yahoo.com
cs220p2.msg.ac4.yahoo.com
cs220p3.msg.ac4.yahoo.com
cs220p4.msg.ac4.yahoo.com

SP2 Chat Servers (Currently Not Working):

cs101.msg.sp2.yahoo.com
cs102.msg.sp2.yahoo.com
cs103.msg.sp2.yahoo.com
cs104.msg.sp2.yahoo.com
cs105.msg.sp2.yahoo.com
cs106.msg.sp2.yahoo.com
cs107.msg.sp2.yahoo.com
cs108.msg.sp2.yahoo.com
cs109.msg.sp2.yahoo.com
cs110.msg.sp2.yahoo.com
cs111.msg.sp2.yahoo.com
cs112.msg.sp2.yahoo.com
cs113.msg.sp2.yahoo.com
cs114.msg.sp2.yahoo.com
cs115.msg.sp2.yahoo.com
cs116.msg.sp2.yahoo.com