I am trying to upload a photo, I have tried 3 different computers. All come back with the same error

This error tells me there is something wrong with my computer or that I have a virus. All three computers are on different internet providers, still the same error.

I am trying to upload a photo, I have tried 3 different computers. All come back with the same error 999.?cafe racer

Im getting same problem its yahoo they tried telling me it was my service provider i got in contact with them and they got back too me everythings ok with my provider its yahoo acting up again

I am trying to upload a photo, I have tried 3 different computers. All come back with the same error 999.?free anti virus

Error 999 Yahoo mail

This error is caused when Yahoo bans your IP address.

FIX:

Wait a few days and check your mail again, or try logging in from

http://mail.yahoo.co.uk

or

http://login.europe.yahoo.com/config/mai...

Some users have had success by using an alternative browser.
it might be the photo. maybe it just was not meant to be.