Hi BrianSheridan,
1. What happens when you try to login to the website?
2. Do you receive any error message?
3. Which web browser are you using?
4. What version of Internet Explorer are you using?
5. Are you able to open the same website in different computer?
If you use Internet Explorer, then perform the following troubleshooting methods:
Method 1:
Optimize Internet Explorer then check how it works.
Refer the following link to optimize Internet Explorer.
How to optimize Internet Explorer
**Note:**This article also applicable for Internet Explorer 9.
Method 2:
Also perform the troubleshooting steps from the following link.
Cannot access some websites in Internet Explorer
Method 3:
If you are using Internet Explorer 9, then perform the troubleshooting steps from the following link.
Some Web sites may not behave as expected in Internet Explorer