I'm sorry about the issue.
Please login into your webmail account by visiting the link given below:
Change your webmail account password ***** then use the new password ***** outlook as well.
please go to https://edit.yahoo.com/forgotroot, and try to reset your Yahoo email account password.
If you are able to login into your Yahoo account, but, want to change the password, you can change the password ***** under:
To change the password ***** your Yahoo! account:
check the video under the link below:http://help.yahoo.com/kb/index?page=content&y=PROD_ACCT&locale=en_IN&id=SLN2035&impressions=true
Keep me posted.
And if you can take a second to rate my service, that would be greatly appreciated.