Hi there, we're running into some issues with the migration from 2003 SBS to the 2008 version. You can see a screenshot of the error here: [URL]http://yfrog.com/0oimg00004200909271437j[/URL] First of all, I don't know if the warning on the domain/forest functional level is always there. You seem to be able to acknowledge this and the continue. Both the AD tools and the SBS BPA acknowledge it is on 2003 functional level (for both domain and forest). The error on Exchange is what stuns us though. SP2 has been on it for years. Last week we updated it to native mode for the upcoming migration. According to ESM it is in native mode and thus there are also no buttons anymore to put it in native mode. SBS BPA reports Exchange 2003 has SP2 installed, but reports it is running in mixed mode. The 2008 migration tool, as you can see in the error image, reports SP2 is not installed. I tried to reinstall SP2 but this gave an error that IMFv1 would still be installed. As I didn't see in add/remove programs I looked up the manual removal process. I could remove the ContentFilterVersion registry key from the registry (which had 0x0 as value) and rename the contentfilter.dll (both from my head names might differ a little). However, the folder I was supposed to rename, called MSCFV1 did not exist. There was (and still is) a MSCFV2 folder, which surprises me as the installer said IMFv2 comes with SP2 and can not be installed if IMFv1 is installed, but apparently it was installed already. Reinstalling Exchange 2003 SP2 however hasn't changed anything. ESM still reports it's in native mode and at SP2. BPA still says SP2 is installed but that it's still in mixed mode and the migration tools still say SP2 is not installed. This server has Trend Micro anti-virus. It did include the messaging agent (a/v in exchange). I have removed that part of Trend Micro from the server, but it doesn't seem to make any difference. Any ideas? TIA