MacOS – How to permanently disable logging in Outlook 365 for Mac

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I ran into an weird issue today when I was prompted that I was running out of space on my disk. Digging into the issue I found that Outlook has been generating a debug log so much that it chewed through almost 200GB of data in plain text.

Weird thing is logging is not enabled when I checked the settings and I can't seem to find an answer as to why it keeps generating the logs. Deleting the log, stop, and then start Outlook again creates a new log file that hits over 200MB in less than 6 minutes. After about an hour it became over 1GB already.

How do I stop this non-stop generation of logs?

Best Answer

To disable logging:

Restart Outlook and when prompted to turn off logging click "Turn Logging Off"

If you disable logging manually you must restart Outlook to fully disable logging, otherwise, it will continue logging in the background

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Edited to add a bit of explanation: Processes don't “start” on a unix system. New processes are created by the fork system call, which results in the calling process being split into two (almost) identical processes. One (the parent) keeps its PID, while the other (the childe) given a new PID. The most common reason for a fork is for the child to exec a new program; it's this fork+exec combination that you most commonly think of as a new process starting up. This is why you need to track three system calls (fork, exec, _exit) for the complete view. But just tracking exec, as execsnoop will do, seems sufficient for your purposes.

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This is not a client-side setting that you can control. This is a server-side setting, which is to say, it's something that Microsoft limits (as do most internet service providers). Since your attachment is larger than their limit, you could upload it to oneDrive and then send a link to the file on oneDrive to your intended recipient. You should have at least 7 GB available in your oneDrive account, possibly more, depending on which Office 365 subscription you have.

Best Answer

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