Skype for Business logs to what folder?

Skype for Business conversation / meeting history is not stored locally on your computer. Here's how to see history:

Add your Skype for Business / Office 365 (Azure AD) account to Outlook. Expand the account on left navigation pane (A in screenshot below), select Conversation History (B). Select the conversation or meeting from list (C), it will be shown in message pane (D):

The above applies to all Office 365 for Business and Enterprise plans except Business Essentials and standalone Skype for Business plans which do not include desktop Outlook client.

If you don't have Outlook client installed or it does not belong to your subscription you can also use any browser and sign in with your O365 / Azure Ad account at outlook.office.com/owa and select Conversation History, it works the same way.

Kari