Anybody experienced this error before? Event 7200 Background thread FDoUpdateCatalog halted on database "EX1-SG2\EX1-SG2-MB5" due to error code 0x80004005. Getting mapi flow tests fail with sitescope, and appears that it happens when these errors occur. I'm not exactly sure if it's is just the background cleanup thats creating the additional overhead and latency that's causing the mapi test to fail or if its this particular issue with the background cleanup. I did some research on this error which talks about AV scanning of Exchange data. We are using Mcaffee and all Exchange data is being excluded. Also talks about full text indexing, which we never enabled. Thanks.