Outlook 2013 Calendar Corruption

Hello,

I ran into this last week and was able to replicate the issue and have a workaround in place.

Environment: Windows 7 Pro SP1 x64 & Windows Server 2008 R2 running Exchange 2010 fully patched/updated.

Issue:

Day 1: User logs into Win 7 machine running Office 2013 Pro Plus and launches Outlook 2013, accesses Calendar --> Multiple (4) Shared Calendars (some connected to SharePoint); No Issue.

Day 2: User logs into OWA (Outlook Web App) and accesses Calendar --> Multiple Shared Calendars; Some shared calendars do not display.

Day 3: User logs back into the Win 7 machine and opens Outlook 2013, accesses Calendar --> Multiple Share Calendars; Cannot open some shared calendars and receives an error that the calendar cannot be found/accessed.

Workaround: Remove and Create a new Outlook Profile under Control Panel - Mail 32-bit

User is able to reconnect to all Calendars.

Error:

"The operation failed. The message interfaces have returned an unknown error. If the problem persists, restart outlook.

Thoughts?