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Windows 7: Outlook Security Warning

24 Mar 2011   #1

Windows 7 Ultimate 32bit
Outlook Security Warning

Hi there,

For the last couple of days, every time I start up Outlook 2010 and it goes to automatically Send/Receive I get a Internet Security Warning pop up which states:
The server you are connected to is using a security certificate that cannot be verified.

The target principal name is incorrect.

Do you want to continue using this server?
If I click yes, everything carries on as normal, but is this OK. When I view certificate, is says it's issued to "*", my POP3 settings are "".

It gives me the option to install certificate, should I do this? Is this safe? I'm just extra cautious as there's a story on the BBC site about some data hack from Iran that tried to control certificates for yahoo, MS and others!



My System SpecsSystem Spec

24 Mar 2011   #2

Dual Booting Windows 7 64-Bit Ultimate Edition and Fedora 16.

Hi NL,

Please try to delete your account and reset it again to let yahoo chose the POP server for you..
Warning: This may(will) delete your personal folders.

My System SpecsSystem Spec
24 Mar 2011   #3

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit

More info Borg posted.
Microsoft warns: Fraudulent digital certificates issued for high-value

I'm not sure if yours is related or not but it sounds odd.

My System SpecsSystem Spec

25 Mar 2011   #4

Windows 7 Ultimate 32bit

Thanks for the replies chaps.

Opened Outlook this morning and it's not popping up, so hopefully this has been sorted. The rumours of it coming from Iran were a bit full on though!

Deleting the account wouldn't have been ideal, but wouldn't have been the end of the world. The pop/smtp settings I have are what yahoo recommend!
My System SpecsSystem Spec
25 Mar 2011   #5

Win 8.1 Ultimate and Home Premium x64 bit

Have a look at this thread OutLook
It will explain why it's gone now

iechyd da
My System SpecsSystem Spec

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