While in CORE, I have an error message that says, "You are using a browser that this application does not support. Supported browsers are: Internet Explorer 11 and Mozilla Firefox 24.x. Continue anyway?"

Microsoft is suspending support of Internet Explorer in June 2022. After collaborative research and testing, effective immediately, CORE Operations and OIT now recommend using Microsoft Edge as your preferred internet browser for CORE and related applications such as infoAdvantage, and Performance Budgeting. OIT has confirmed that Edge is available on all statewide resources. If you experience performance issues with CORE and Edge, please contact us at core.help@state.co.us, indicating which version of Edge you are using, as well as any specific functionality issues.