Hopefully this will be an easy one for someone. We are currently upgrading ePO and get the standard compatibility check come through. I have upgraded/removed nearly all the extensions as advised but there is where I can't for the life of me work out where the download for the updated version is. It isn't included with the MSME 8.0 download (just the old version I already have installed).
McAfee Security for Microsoft Exchange Reports 8.0 8.0.7905.119 (MSME80REPORTS) - requires McAfee Security for Microsoft Exchange Reports 8.0 8.5.8238.100
Apparently it was McAfee trying to confuse me. We were reading the version as "8.0 8.5.8238.100" whereas it is actually "8.5.8238.100", which is the new version but doesn't actually upgrade the old extension when installed. The old extension has to be removed manually.
Don't judge me, it's been a long week!