Windows 10: Windows Security Sign in pop up asking for credentials

Windows Security Sign in pop up asking for credentials to log into a icalendar that I was just removed from??I have cleared my cache and restarted to try and delete. I shut off sync before I did this. Is this coming from a browser? I use Google and Edge as browsersThe message says to download: http://summitspokane.chutrchcenter.com/groups/icalendars/ plus.......

:)

 

Windows Security sign in pop up

Since you are still getting this pop up window, the next suggestion we have is to reset the network. Kindly refer to the steps below:

• Click on Start.
• Go to Settings.
• Select Network & Internet.
• On the Status tab, click on Network reset.

Doing this will make Windows forget the connection credentials and other networking components. You may have to re-enter you WiFi credentials if you will attempt to connect to your home network.

Let us know the results.

 

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

The 'recent credentials sign in' message popped up in my laptop action centre.
Nothing had been changed.
So I signed into my Ms Account to the credential section.
The email address in the drop down list was not current. The address was changed Jan 2015 and gmail has been in use on the laptop since that date. So my choice was to click on 'nothing applies' and do the next steps.
The sign in required an alternate email address. Fortunately I have one handy. This security routine has a 30 day wait period.
Now I have found the tutorial 37536 illustrating deleting extra accounts but I don't think I can do this because the security section is not available for 30 days. I had no idea this control panel item was available but only the tutorial informed what could be done with this data.
It is amazing that 1.5 yr has gone by and the old email is still in there as a credential. I suppose after 30 days I can delete the hurontel address. I found it odd that the old email address was on the drop down list for a contact. Its a dead end address.
Now that I have made the credential 'visit' can I assume the hurontel address is gone from MS records and I can delete it in the control panel credential section and not have to sign back into the MSAccount credential section because the correct address is listed?

 

Windows security message asking for credentials keeps popping up

A windows security message (see image below) asking me for credentials keeps popping up all of a sudden and it doesn't matter how many times I close it.

What is this message? I don't recognize the domain it's asking me to provide my credentials for. How can I make the messages disappear?