Windows – AD Sync Msoidentitycrl Tracing Growing Rapidly

At some point I was surprised to see that my C: Drive on the production server was filling up rapidly ? Sad smile


After a quick analysis I saw that the reason was 40 Gb of msoidtrace tracing log files ?


After checking a bit deeper I could see that these where coming from the AD Sync Services we had installed lately.

Solution :

After applying the proper registry keys


And restarting the service “Microsoft Online Services Sign-in Assistant”


The problems where gone Smile

Read more here.

Enjoy !


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