In order for Cronofy to connect to your Exchange server we need access to Exchange Web Services. This is enabled by default for Exchange 2007 SP1 and higher (this includes all versions of 2010, 2013, and 2016).
We also need to know the URL of your Exchange server, this can usually be found automatically using a process called Autodiscover.
If you are unable to connect to your Exchange server from your email address and password alone, you may need to specify the optional username field. The value for this usually looks like DOMAIN\username and you probably see it when logging in to your work computer.
If you are still unable to connect you may need to specify your Exchange server URL manually, this usually looks something like https://myexchangeserver.com/EWS/Exchange.asmx
If you don't know this you will need to ask your IT department for it, and also whether Exchange Web Services (EWS) are externally accessible for your server.
The good news is that once one person from your company has connected successfully we'll know the URL of your Exchange server for other people in your company and so it should be more straightforward for everyone else.