To regain access to your missing “legacy” contact list after the forced migration or upgrade to Teams in the Office 365 cloud, click on [ Go to Teams ] in the Skype for Business application and navigate to the Chat tab on the left hand pane. Note that you may have to sign-in (again) to Microsoft Teams.
Surprise surprise! The contact list is completely blank!
If you happened to click pass the dialog that appeared, you have definitely missed the important
“We’re importing your Skype for Business contact groups… This could take a while. To organize your contacts in the meantime …”
dialog box which exactly explains this strange phenomenon.
Depending on your Skype for Business tenant’s region, it can take several hours before your contact list finally appears in Teams itself.
For your convenience, note that your contact list is also accessible under Calls > Contacts.
On an Office 365 tenant running Skype for Business, you may be “randomly” selected to upgrade from Skype for Business to Microsoft Teams. You will not miss this strategically placed violet coloured notification when you start the Skype for Business (desktop) application.
It is possible to ignore this upgrade prompt for an unknown duration until one fine day where you are “forced” migrated automatically in the cloud. This is evident when the all-too-familiar Skype for Business interface is replaced with “Your organization is now using Microsoft Teams” banner when you successfully sign-in as illustrated.
From this moment on, you are blocked from accessing all your PIM information from contacts to history list and key functionality such as the meeting calendar and voice phone dialer within the Skype for Business app. Administration of existing Skype for Business meetings prior to the upgrade to Teams can continue to be done using Outlook though.
So what now then? You can click on the “Questions? Learn more” (Switch to Teams from Skype for Business) or “View past conversations, calls or voicemails” (FAQ) link to learn more in the meantime.