Exchange 2019 Migration from Exchange 2016
KB ID 0001472 Exchange 2019 Migration If Exchange 2016 was Exchange 2013 in a pretty dress, then with Exchange 2019 it’s simply added a hat. In the past, every third Exchange release was a major rebuild, but Exchange 2016 is simply Exchange version 15.1 (Exchange 2013 was 15.0 and Exchange 2016 is version 15.1). So the Exchange 2019 Migration is pretty much the same as it was from 2013 > 2016, or even 2016 > 2016. There...
Outlook OAB download fails with 0x80004005 and/or 0x8004010F
KB ID 0000035 Problem 0x8004010F is caused by client not being able to see the Offline Address Book. 0x8004010F Error With Exchange 2013/2016/2019 Firstly make sure your autodiscover is correct, on the Exchange server open the Exchange management shell, and issue the following command. Get-clientAccessServer | fl Name,AutoDiscoverServiceInternalUri If you need to fix/change it, use the following syntax. Set-ClientAccessServer...
Group Won’t Accept Mail From ‘Outside’
KB ID 0001771 Problem Exchange has been this way for a long time here’s me explaining this very problem with older versions of Exchange. If you create a ‘Group’, be that a Distribution Group, or a ‘Microsoft 365′ Group, the default setting is to NOT ALLOW mail from anyone outside your organisation. If you attempt to send mail to that group you will see errors like these; Errors; 550 5.7.133...
Can you Use ‘Let’s Encrypt’ on Hybrid Exchange?
KB ID 0001770 Problem A few months ago I wrote an article about getting free exchange certificates with Lets ‘Encrypt’. And that still works peachy, I implemented it on my test Exchange 2019 server (in Hybrid mode) and all appeared well. Some time later, (remember this is my test network so it’s not in production.) I noticed that mail was not getting forwarded from O365 to the on premises Exchange server. I’ve...
Exchange Y2KK Bug
KB ID 0001769 Y2KK Problem Over the last couple of days the Exchange forums have been alight with the Y2KK bug, typically it affects Exchange 2016 and 2019 (though the chatter is, it actually effects any Exchange versions whose update version begins with 22… This is fine below, (it begins with 21..) Add-PSSnapin Microsoft.Forefront.Filtering.Management.Powershell Get-EngineUpdateInformation Y2KK Symptoms Emails No Longer Being...
Exchange ECP HTTP 500 Error
KB ID 0001756 Problem This infuriatingly happens to me a lot! Every time the fix is the same, (but is a little impractical). Essentially you attempt to log in to ECP (Exchange Admin Center), you a prompted for your credentials, then you just get a ‘500 Error”. The website cannot display the page HTTP 500 Most likely causes: •The website is under maintenance. •The website has a programming error. What you can try: ...