Testing a New Exchange Hybrid Configuration with Office 365

Hybrid Test 1

• Create a test mailbox in Onpremise Exchange
• Verify Access using OWA
• Configure Outlook & Active Sync
• Verifying that the client experience of Exchange onprem is working (e.g. GAL visibility, free/busy lookups, ActiveSync device redirection)
• Verify the client is able to see the Exchange Online user accounts in the GAL and free/busy lookups
• Test mails from and to O365 mailboxes and onpremise mailbox

Hybrid Test 2

• Create a test mailbox in Office 365
• Verify Access using OWA
• Configure Outlook & Active Sync
• Verifying that the client experience of Exchange Online is working (e.g. GAL visibility, free/busy lookups, ActiveSync device redirection)
• Verify the client is able to see the onpremise user accounts in the GAL and free/busy lookups
• Test mails from and to O365 mailboxes and onpremise mailbox

Migrating a Mailbox to Exchange Online

Since now we have a test mailbox, Hybrid Test 1, on-premises with an Outlook profile and a mobile device connected, it will be a good candidate to test the mailbox migration process. • Moving a test mailbox from on-premises Exchange to Exchange Online

To initiate a mailbox migration use the Exchange Admin Center. Select the Office 365 section, and navigate to Recipients -> Migration.

After completing the migration you might also like to re-test mail flow and free/busy, just to be sure there's no lingering issues

Migrating a Mailbox to Exchange onpremise

Since now we have a test mailbox, Hybrid Test 2, on-Exchange Online with an Outlook profile and a mobile device connected, it will be a good candidate to test the mailbox migration failback process. • Moving a test mailbox from Exchange Online to on-premises Exchange

To initiate a mailbox migration use the Exchange Admin Center. Select the Office 365 section, and navigate to Recipients -> Migration.

After completing the migration you might also like to re-test mail flow and free/busy, just to be sure there's no lingering issues

Hi Faiza,

I would like to provide you with the link to the https://aka.ms/usertrainingwizards and also the https://support.office.com/en-us/article/Deployment-advisors-for-Office-365-services-165f46e8-3533-4d76-be57-97f81ebd40f2?ui=en-US&rs=en-US&ad=US for reference.

Hi Faiza,

Normaly the check list is before migration of real users, for example:

• Mail flow
• Access from Office 365 Portal
• Access with devices
• Shared Calendars
• Open additonal mailboxes
• OWA Redirection
• Autodiscover in Outlook
• Experience and Outlook migration tests

After all this check lists, have passed and more that could be relevant to your migration scenario, you are all set to do the migration and to the end users just send a feedback form about the new experience, not test to do.

we have just now migrated all the users from 2010 to office 365.

we have followed two steps

1. Users with no dependency (like no shared mailbox access,resource mailbox accesss..)

2. Users with dependency

I'd say it should be transparent to them, though depending on the migration method you've chosen caveats might apply. I guess access to shared mailboxes/calendars, rooms and so on are one thing to check for, issues with the Name cache and replying to older messages, the occasional broken forwarding or Inbox rule, etc. Again, depends on the method used.

On the bright side, it's a very well known experience now, with people doing migrations to O365 for almost 6 years. Most of the problems are detailed on the internet, so you should generally be OK. And you should definitely also focus on introducing users to the new features they will get!