Forum Discussion
Company Impact After Office 365/Exchange Hybrid Configuration
Well if you are changing UPNs as part of the process, the clients will have to be reconfigured with the new login details (and don't forget to inform your users accordingly!). Web-based clients should continue to work just fine, but the OneDrive client, Teams and any other "standalone" clients will either prompt you for login details or will stop working until you've changed them manually.
As I mentioned above, best do a pilot :)
First, you need to give us more details on your current configuration. Are we to assume that all mailboxes are currently hosted on-premises and you are already using the above mentioned O365 services? Is the mycompany.com domain added to O365 and which domain you are using for the UPNs?
In general, unless you change the UPN (which is not mandatory for Hybrid), apps will continue to work fine. But it depends on the details. Which is why it's always a good idea to run a small pilot with few test users.
VasilMichev wrote:First, you need to give us more details on your current configuration. Are we to assume that all mailboxes are currently hosted on-premises and you are already using the above mentioned O365 services? Is the mycompany.com domain added to O365 and which domain you are using for the UPNs?
In general, unless you change the UPN (which is not mandatory for Hybrid), apps will continue to work fine. But it depends on the details. Which is why it's always a good idea to run a small pilot with few test users.
Good morning Vasil and really thank you for your reply!
Like you said, mailboxes are all hosted on-premise and we are already using O365 services with the onmicrosoft.com domain.
Next week we will need to do the hybrid configuration with onpremises and so adding our domain and then changing all UPNs from @onmicrosoft.com to @mydomain.com.
Once i'll have changed that UPNs, which of O365 services will need to be reconfigured?
Thanks again
Well if you are changing UPNs as part of the process, the clients will have to be reconfigured with the new login details (and don't forget to inform your users accordingly!). Web-based clients should continue to work just fine, but the OneDrive client, Teams and any other "standalone" clients will either prompt you for login details or will stop working until you've changed them manually.
As I mentioned above, best do a pilot :)
VasilMichev wrote:Well if you are changing UPNs as part of the process, the clients will have to be reconfigured with the new login details (and don't forget to inform your users accordingly!). Web-based clients should continue to work just fine, but the OneDrive client, Teams and any other "standalone" clients will either prompt you for login details or will stop working until you've changed them manually.
As I mentioned above, best do a pilot :)
Thank you VasilMichev, I'll tell my boss that I won't modify the infrastructure without doing a pilot first!
Have a good day!