I used Yahoo messenger on my PC perfectly ok last weekend, but have been unable to use it on my PC over the last few days. I have been able to use Yahoo on my phone perfectly fine the whole time. I have also checked that my user ID and password have been correct as well. I have also checked that I have not been signed in to Yahoo on my phone while I have tried logging in on my PC, though if i was it would sign me out on my phone or give a message on Yahoo on my PC that I am still signed in on another device and it has not done either of these.
Anyone have any ideas as to why it just won't sign in as it's very annoying and I must have tried 50 or so times!