Firewall stops me using yahoo messenger

Yahoo!7 messenger is unable to download files needed for installation. Please
check firewall settings and retry installation.
I found the answer its so simple, The problem has nothing to do with firewalls.
Yahoo instant messenger (yim) needs internet explorer 7 or above version to
enable yim to operate properly with the current yim versions. If you have an
earlier version of IE (I was using IE 6 coz I always use firefox and did not
have windows update enabled) So I disabled windows update coz windows XP is not
supported by windows update any more,and kept using firefox, but even if you

never use internet explorer, yim still needs internet explorer 7 to operate

without these errors shown above. I tried to fix it for weeks thinking it was

firewall or such, but it just needed IE 7 so I downloaded it here:
http://www.microsoft.com/en-au/download/internet-explorer-7-details.aspx
and even tho it says its for a windows server it still worked on my windows
XP pro 64bit and now yim is working properly, allowing multiple copies of
usernames etc, no problems at all now. I also downloaded firefox version 35,
which helps yim too coz its yahoo preferred.
https://www.mozilla.org/en-US/firefox/35.0/system-requirements/

You need the following OS to support Messenger
Windows 2000 / XP / 2003 / Vista / XP64 / Vista64 / Windows7
If that is not an issue read on.

The problem is probably due to a mal-function of the uninstall software.The Yahoo Messenger uninstall software is notorious for leaving files and fragments behind creating conflicts with the incoming software. This conflict has caused the firewall to hoist the red flag. It is unnecessary to adjust firewalls to download Yahoo
Close all programs when uninstalling / downloading and uploading.
If you tried to uninstall the old Yahoo Messenger program from the Control Panel and failed to back it up with a visit to the 'C' drive, you may have old software conflicting with the incoming software trying to share the same folder.
If you have Vista the whole Messenger folder should have been removed during the uninstall.
Check
Start > Computer >> Local drive (C) >> Program Files >> Yahoo >> Messenger. - The Messenger folder should have been deleted and not seen. If the Messenger folder is still visible - delete it.

If you have a pre-Vista OS, the Messenger folder remains, and inside, only one sub-folder should be seen. This is the 'Profile' folder and contains all the message history. All other software should have been deleted.

Manually delete any other folders and files before moving on

If you have Vista you may be denied being able to delete folders - in this case you will have to disable the 'User Account Control'
Start > Control Panel (Home) > User Accounts and Family Safety > Add or remove user accounts > Continue > Go to the main User Account Page > Turn User Account Control On or Off > Continue > Uncheck control box > OK

Download 'ccleaner' and 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_ccleaner/

Re-start your computer

Download Yahoo Messenger from here.

http://www.filehippo.com/download_yahoo_messenger/

Uninstall or disable any security software running on your computer. Try restarting your computer in safe mode with networking and then installing. If all of the above doesn't works and still you were getting message for firewall then either disable your Router's firewall by opening Router's page or Bypass router for a while and connect directly to Modem and then Install.