If you have been following my blog, I recently migrated my Exchange 2010 server to a new 2016 server. There have been a few hiccups along the way however for the most part the experience has been good and user disruption minimal, until I encountered Event ID 15021.
Last night during a maintenance window I applied my Microsoft updates and rebooted the server. Shortly after reboot I attempted to open Outlook and it failed with a server unavailable error. OWA and ECP both showed BLANK white screens. I began to panic a little because this is probably the IT guys worst nightmare! Working in the industry for over 20 years I put my panic aside and began my standard troubleshooting procedure.
STEP 1 – Event logs are your friend
Continue reading “Exchange 2016 – EVENT ID 15021- Blank ECP / OWA & Error connecting to Outlook”
Having a small shop and wearing a lot of hats here in the office tends to create a slew of challenges. Most of the time I have a ton of projects brewing so focusing on one can be difficult at times. My migration to a new Exchange 2016 server will be gradual taking about 2 to 3 weeks to complete. During the initial setup I like to let certain steps “stew” overnight to make sure there are no disruptions. I also like to be sure I have a contingency plan to undo any unforeseen issues.