SmartLink requires that Internet Explorer (IE) be enabled for your version of Windows because this is the HTML engine that is used for the web-based login screen.
To enable or check to see if IE is enabled, do the following:
For Win10
- If Internet Explorer is not enabled on your computer, you'll need to add it as a feature.
- Select Start > Search, and enter Windows features.
- Select Turn Windows features on or off from the results and make sure the box next to Internet Explorer 11 is selected.
- Select OK, and restart your computer.
For Win8
- Press the Windows logo key+R to open the Run box.
- Type appwiz.cpl, and then select OK.
- In the Programs and Features item, select Turn Window features on or off.
- In the Windows Features dialog box, locate the entry for the installed version of Internet Explorer. For example, locate the Internet Explorer 11 entry. Then, check the checkbox.
- Select OK to commit the change.
- Restart the computer.
What to do if IE is already installed and it is not working?
If Internet Explorer is installed, but the SmartLink login screen is still blank, then the next step is to restore Internet Explorer's Advanced Settings back to their default settings by doing the following:
For Win10
Select Start > Search, and enter Internet Explorer
For Win 8
The IE program icon should be on the Windows taskbar so you can click on it to start IE. If not, switch to Start screen and look for a live tile called Internet Explorer and click on it.
If you don't have a live tile for Internet Explorer, open the Apps list by clicking or tapping on the arrow button from the bottom left corner of the screen. Navigate through the Apps list, and you'll find a shortcut for Internet Explorer at the letter I. Click or tap on it, and the web browser will open.
Then do the following...
- In the top right-hand corner of the Internet Explorer windows, click on the Settings icon
and then select Internet Options. 
- Click on the Restore advanced settings button and then click OK.
- Reboot your PC
This should allow you to log into your SmartLink account. If not, there there is most likely a third-party security or virus protection program blocking SmartSDR for using IE.