We were able to apply a fix to address the issue that people were having changing calendar items that were created prior to the migration. If you’re still having trouble with that, you may need to close Outlook and restart it to give the changes we made an opportunity to be applied. You can also log into Outlook Web Access and try to change them there.

• If Outlook keeps prompting you for a password, or asking if you want to use “old data” pr a temporary file, the most likely cause is that it is trying to use an Outlook profile that is trying to reach your old mailbox.
• Stop. Take a deep breath and ask yourself "Did I create a new Outlook Profile or have one created for me in the last few days?"
• Did you answer (in your head preferably, so as not to alarm anyone within ear shot):

1. 1. A super positive "You betcha...'cause I am all about that Outlook knowledge and following instructions!"
   2. A lukewarm, but heartfelt "Hmmmmm....I'm really not sure"
   3. An emphatic "NOPE! I most definitely did not do that per the instructions that were both exceptionally curated, and presented to me with a level of detail and artistry such, that they should be on display at the Guggenheim"
   4. A passive and slightly confused "ehhhh....maybe"
   5. A gleeful "hey look, a dog with a fluffy tail!"
      

• If you answered anywhere in the ballpark of anything other than (a) - then most likely you have tried and/or are trying to use new fancy log in credentials on an old Profile. This is a one way ticket to complete frustration for you, trust us.
• You need to create a new profile. You can do this!
• Find the instructions for creating a new profile on the wiki. If you have created a new profile, make sure that you’ve set that one as the default for Outlook to use when it launches. That’s Step 15 on the Windows 7/10 instruction and Step 9 on the Mac OSX instructions.
• *If the problem persists: You may have to delete your old profile. Please verify that everything is correct with your account via OWA, before doing this. If you have any reservations at all, please contact Tech Support before proceeding.

How to reset the nickname and the automatic completion caches in Outlook

How to Clear Your DNS Cache

Note: If you are using a Surface Pro or Surface Book, and you do not see the Mail (32bit) or Mail App icon visible in your Control Panel, this may be because the defaulted install of Microsoft Office is actually through the Windows Store. The solution is to uninstall the Windows Store Version of Office and reinstall Microsoft Office through UT's Office 365. Once you do that you can access the Mail App to configure it. *This applies to anyone who buys Microsoft Office through the Windows Store.

1. In the control panel, double click on Default Programs
2. Then double click on Set your default programs
   
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3. At Email click on whatever is there
4. It will open Chose an app
5. Double click on Outlook 2016 (or whichever version you have)
   
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6. Now go back to the control panel and click on either Mail 32 bit if it's there or View 32 bit Control Panel Items and see if its in there

If you need to link another account to OWA (gmail, yahoo, utmail, et al) go here