Employee server access is only supported using Internet Explorer.
Your web browser is detected as being some other browser (such as Google Chrome, Microsoft Edge, or Mozilla Firefox).

On Windows 10, the default web browser is Microsoft Edge. This is easily mistaken for Internet Explorer because both use a blue E icon.
Internet Explorer uses a light blue E icon while Edge uses a dark blue icon.
On Windows 10, you can find Internet Explorer by clicking the Start Button then typing "Internet Explorer".
IE versus Edge