Starting with the August 2013 update of Microsoft Outlook 2013, Microsoft is collecting additional information from client computers that connect to the Office 365 service. This information will help the Office 365 team identify client connectivity issues and resolve them faster. The goal is to greatly improve the health and performance of the Office 365 service. The following are examples of the kind of information that is collected:
The time required to process a request with Office 365
The time required to retrieve free/busy information from Office 365
Details about unsuccessful connection attempts made to Office 365
The Office 365 team is focused on continuous improvement of all aspects of the Office 365 service to make sure that our customers have a great experience.
These files are located in %userprofile%\AppData\Local\Microsoft\Office and are named OTeleData_###_#.etl.
Note The # characters in the file name are placeholders for random numbers. There may be more numbers or fewer numbers in the actual file name.
If you prefer to delete these files, follow these steps:
Locate the following folder:
Open this folder, and then click the Name column to sort the files.
Find the files that have the following name:
Select the first file that has this name, hold down the Shift key, and then select the last file in the list that has this name. Doing this selects all the files that have this name.
On the desktop, right-click the Recycle Bin, and then click Empty Recycle Bin.
Note Any other files in the Recycle Bin will also be permanently deleted. Do this only if you're sure that you want to permanently delete all files in the Recycle Bin.