Authorize Dynamics 365 F&O
This guide explains how to connect your Dynamics 365 Finance & Operations environment to Stacksync.
Overview
Connecting Stacksync to Dynamics 365 Finance & Operations requires a simple OAuth-based flow:
Enter your D365 environment URL
Sign in with your Microsoft account
Grant Stacksync permission to access your ERP data
Estimated time: 2–3 minutes
Prerequisites
Before beginning, ensure you have:
Access to Dynamics 365 Finance & Operations
Your environment URL (e.g.,
https://yourorg.operations.dynamics.com)Permission to authorize third-party applications (some tenants require admin approval)
Step 1 — Select Dynamics 365 Finance
In Stacksync:
Click Create Sync
Choose Dynamics 365 Finance & Operations
This opens the authorization flow.
Step 2 — Enter Your Environment URL
Provide the base URL of your D365 Finance & Operations environment.
Environment URL
https://yourorg.operations.dynamics.com
Tip: Use the URL visible in your browser when logged into D365.
Click Authorize App.
Step 3 — Sign In with Microsoft
You will be redirected to Microsoft’s login page.
Enter your Microsoft credentials
Continue to the permissions screen
This authenticates you as a valid D365 user.
Step 4 — Grant Stacksync Access
Microsoft will ask you to approve the Stacksync app.
Click Accept to authorize:
Permission to read ERP data
Permission to interact with OData entities
If your organization enforces admin consent, you may see “Admin approval required.” See Troubleshooting below.
Done! 🎉
Your Dynamics 365 Finance & Operations environment is now authorized.
Finding Your Environment URL
Your environment URL is the base part of your D365 instance.
Examples:
Production:
https://yourorg.operations.dynamics.comSandbox:
https://yourorg.sandbox.operations.dynamics.com
Avoid adding additional paths such as /data, /ui, or /namespaces.
Correct examples:
✔️
https://contoso.operations.dynamics.com✔️
https://contoso.sandbox.operations.dynamics.com
Incorrect examples:
❌
contoso.operations.dynamics.com(missing https://)❌
https://contoso.operations.dynamics.com/data/(extra path)❌
https://contoso.operations.dynamics.com/(trailing slash)
Troubleshooting
Admin Consent Required
If you see this message:
“Need admin approval for this app.”
Your organization restricts app installation.
Fix:
Contact your Azure AD administrator
Ask them to approve the Stacksync enterprise app
Retry the connection
“Invalid URL”
Verify:
No trailing slash
No additional paths
“Access Denied”
You may not have the correct permissions.
Check:
You can log into D365 Finance & Operations using the same Microsoft account
You have at least read access to the desired entities
Connection Timeout
If your environment is slow or under load:
Retry connecting in a few minutes
Verify you can access the D365 Finance & Operations UI directly
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