When Scheduled Data Gatherings fail to collect data, the reports dependent on them might show "No Data Available". Listed below are some of the immediate measures to troubleshoot Data Gathering challenges.
Essential Data Gathering.
Mailbox Account properties and Public Folder properties Gatherings.
Message tracking logs / OWA log files Gatherings
Mailbox Content Gathering
Essential Data Gathering:
Ensure that the user, whose credentials provided to run Essential Data Gathering tasks:
Has read permissions on configuration naming context. [ Enterprise admin, root domain admin,Exchange Organization admin,Exchange View Only admin have these permissions by default.]
Has read access permission to the administrative shares present in the Exchange Server.
Mailbox Account properties and Public Folder properties Gatherings:
Extracting Mailbox Account Properties and Public Folder Properties requires MAPI to be installed. This can be done using any one of the three MAPI providers.(Outlook or MAPI Download or Exchange System Manager 2003 SP2). For Exchange 2012 environments only MAPI Download is supported.
The credential of the user provided for data gathering should have administrative privileges over the entire Exchange Organization.
Ensure that the user account used for data gathering, has a mailbox which is not hidden from the Global Address List (GAL).
If Outlook is used as MAPI provider then it should be the default mail client (This can be checked by opening Internet Options in Internet Explorer - Under Programs tab check whether Email points to Microsoft Office Outlook).
Message Tracking logs / OWA log files Gatherings:
Ensure that the user whose credentials, provided to run "Message Tracking Log gathering" or "OWA Log gathering" has read access permission for the log files present in Exchange Server. This permission can be given by adding that user under Local Admin group of the server. (By Default "members of Domain admin group" belong to the Local Administrators Group of the machines present within the domain).
Exchange Reporter Plus collects log path info from the Active Directory. A log path change made by a user in MS Exchange is not automatically reflected in the Active Directory. Please check the log path collected by Exchange Reporter Plus from the (admin -->>log path)configuration option. If any of the Servers log path is not correct, update them manually.
Mailbox Content Gathering:
Ensure that the user whose credentials, provided to run a "Mailbox Content Gathering task" should have send as/ receive as permission over the configured mailboxes.
For copying log files and retrieving the Store database size information, administrative shares are used. Only a Local administrator can access these administrative shares.