Windows 10: Keep having to sign in to all my email accounts

After I did the newest feature update on Windows 10, all my email accounts keep requiring me to re-enter my passwords. I have searched and tried multiple things but cannot seem to find a resolution. What could have caused this? What can I do to fix it?

:)

 

Unauthorized Emails from my account?

It is more than likely that your email account was hacked, either by a virus sniffing your password, or just simply hacked.

Either way, change your password on your email account. Unfortunately the damage by already be done. They already have your contact list and your email address associated with that contact list. There is nothing stopping them from sending out emails using their own SMTP servers to everyone on your contact list and claiming the emails are from your email address. They don't actually have to have access to your yahoo account or even any yahoo server to send emails to people that come from your address.

 

Cannot sign in microsoft account.

My device: Lumia 520. GDR2.
I cannot sign in my Microsoft account on my device. It didnt say any error but Microsoft account is not listed in Email and account list. When I click add button, it will show microsoft account option but after press sign in, it is still not shown in email
and account. Another problem is i cannot delete facebook account. Error code: 0x83cf1202. I have tried as suggested here: http://support.microsoft.com/kb/2475837/en-us#step0x83cf1202 but as my Microsoft account is not shown, I cannot do step 6.

Any suggestion?

 

Your Microsoft account needs you to sign in again-recent credentials

Yes the correct or current info is in the Settings/Accounts/Your email and accounts.
The steps in the tutorial included signing in after deleting a listing. I couldn't see where that was relevant since its a second listing. It looks like I have to voluntarily do the 'sign in' so I can avoid doing that. I'm locked out for 30 days anyway.
Perhaps its time to set up a stand alone user account in that laptop <grin> Too nerve wracking dealing with this MSAccount.