I’ve got a problem that started in the last week where my hard drive on my laptop fills up quickly. I’ve used Treesize Professional to check out the disk space and can see there’s huge numbers of 3MB files in the “Outlook Logging” folder buried deep down under the “C:\Users\username\AppData\Local\Temp\Outlook Logging\” path.
I did some googling and found that this could be due to Outlook Logging being enabled. So I checked Outlook Logging under the Advanced / Other options in outlook and as you can see, it’s NOT enabled.
I decided to further check the registry that this links to and found it too was disabled.
I tried many things, even enabling logging, rebooting, disabling logging. Nothing I did would resolve the issue.
One of my fellow MVPs found this MS Forum post here which suggested that the issue was due to a problem with a Mailbox in my profile.
I didn’t have problems with my profile, but I did notice however that due to some server changes, one of the mailboxes I have which is linked to a clients site, was not accessible. While I was investigating the issue, I created a batch file to periodically delete the contents of the folder – quite a simple command really below where username was replaced by my userID.
del "C:\Users\username\AppData\Local\Temp\Outlook Logging\*.*" /q
What I noticed today, while I was onsite with the client was the the files stopped logging in Outlook Logging, because it now had direct connection with the “missing” mailbox. Therefore, I’m led to conclude that yes indeed, the issue of having large numbers of files created in my Outlook Logging folder was due to the inability of Outlook to connect to a specific mailbox. What concerns me is that I can’t find anywhere that this is documented by Microsoft as a feature of Outlook.
Hope this helps someone else that might see this issue at some point.