You are seeing the following errors in the Exchange Configuration Collection and or the Mailbox Content Collection .
Error: Unable to write to the Insight data storage engine service. Details: Error decompressing input (malformed?)
Error: Unable to get the mailbox synchronization token. Details: The request failed. The remote server returned an error: (404) Not Found.
Error: Unable to retrieve or autodiscover Exchange Web Services URL. Details: Unable to retrieve or discover the Exchange Web Services URL for mailbox firstname.lastname@example.org. Please check the Exchange autodiscovery configuration and ensure the account has sufficient rights, or configure an Exchange Web Services URL for Exchange2013 in the data source configuration in Admin Settings. Error: Unable to query messages from the mailbox. Details: The request failed. The operation has timed out
Download and install the Latest Hotfix Package from the following Knowledge Base Article. These will be fixed in the next version of UCCS -A in 8.1 which is scheduled to be released the end of June 2015.