What this appears to be is a certificate issue, your computer is attempting to contact the issuer of our SSL certificate(s), but it can't. So now because it is a Windows "window" pooping up to give a warning, it comes up behind the software and can not be selected using alt+tab option
For those having issue, can you open the software but not click on any buttons for 1-2 mins just to see if the issue stops or if you see the following window
This is the issue that has happened for people:
“It can also mean that the security certificate is valid but the CRL distribution point is unavailable.”
Fixes:
http://www.brighthub.com/internet/se...es/82291.aspx#
They can try the below to fix it:
1. Confirm that your system clock and time zone settings are correct.
2. Open Internet Explorer (even if you normally use another browser) and [click the Alt button to show the toolbar menu], then navigate to Tools > Internet Options > Content tab > Clear SSL State button
3. Follow this link and click the "Microsoft Fix It" button.
4. Run the MicrosoftFixit50191.msi that was downloaded in step 3.
5. The installer will prompt you to restart your computer. Please do so now for the changes to take effect.