Before You Begin
An Azure Global Administrator is required to grant the necessary permissions.
We recommend completing the consent step the afternoon before or the morning of your scheduled migration.
Once Graph permissions are granted, the VSTO add-in will stop working.
Step 1: Grant Microsoft Graph Permissions
To begin the migration, Graph permissions must be granted in your Sign In Solutions environment.
Grant Consent for Calendar Synchronization
In Planner Web, navigate to Administration.
Select Integrations.
Click Calendar Synchronization.
Select Grant Consent.
If you see Re-grant Consent, this step has already been completed.
Grant Consent for Outlook Add-in
In Planner Web, navigate to Administration.
Select Integrations.
Click Outlook Add-in.
Select Grant Consent.
If you see Re-grant Consent, this has already been completed.
Step 2: Disable and Remove the VSTO Add-in
The VSTO add-in must be disabled and removed before the migration can proceed.
Disable the VSTO
Go to Settings.
Select Other Settings.
Scroll down.
Toggle Disable VSTO to ON.
Remove the VSTO from Outlook
The VSTO add-in must be removed from all users’ Outlook applications.
⚠️ The VSTO and the new O365 add-in cannot run alongside each other.
Step 3: Install the O365 Add-in
There are two installation options:
Central deployment (recommended)
Individual user installation
Option 1: Central Deployment (Recommended)
This must be completed by a Microsoft 365 Administrator.
Download the Manifest File
Go to Planner Web.
Click Administrator.
Select Integrations → Outlook Add-in.
Download the Outlook Manifest file.
Deploy via Microsoft 365 Admin Center
Open the Microsoft 365 Admin Center.
Go to Settings → Integrated Apps.
Select Add-ins.
Click Deploy Add-in.
Choose Deploy custom add-in.
Select Upload custom apps.
Choose I have a file for the manifest file.
Upload the downloaded Pronestor manifest file.
Click Upload.
Follow the on-screen instructions to select which users should receive the add-in.
⏳ Note: Central deployment can take up to 72 hours to take effect.
Option 2: Install Per User
Download the Manifest File
Go to Planner Web.
Select Administrator → Integrations → Outlook Add-in.
Download the Outlook Manifest file.
Install in Outlook (Web)
Log in to Outlook on the web.
Open Add-ins for Outlook here
Select My Add-ins.
Scroll to Custom Add-ins.
Click Add a custom add-in.
Choose Add from file.
Select the Manifest file and click Open.
Click Install.
Wait for the installation to complete.
Installation is now complete.
Step 4: Book Your Migration
Sign In Solutions performs EWS to Graph migrations:
Monday – Thursday
Up to approximately 12:00 CET
The migration will take approx. 1-2 hours and the system cannot be used during this time.
To schedule your migration, please contact:
Please include your preferred migration date, and our team will confirm availability.
Need Assistance?
If you have any questions about the migration process or installation steps, please contact our Support team at [email protected].