App Assure

Get no-cost app compatibility assistance when deploying Windows 10 and Office 365 ProPlus with an eligible subscription.

A customer service representative in an office

App Assure brings Microsoft’s compatibility promise to the new Microsoft Edge

If you have an app that runs in Internet Explorer or Google Chrome and you experience compatibility issues, we’ll fix it at no additional cost.

Two colleagues working troubleshooting on tablet devices

We stand behind our app compatibility promise

Microsoft is committed to ensuring your apps work on the latest versions of our software. If you encounter any issues, we’ll help you resolve them at no additional cost.

We’ve got your back on app compatibility

Let us help remediate custom line-of-business apps, engage third-party software vendors to help with Windows 10 apps, and address issues with Office 365 ProPlus macros and add-ins.

An IT worker helping a colleague troubleshoot on a desktop computer
A woman working on a laptop in an office

This is our application compatibility promise

Data shows 99% of apps that worked on Windows 7 will be compatible with Windows 10 and Office 365 ProPlus. Here are some helpful hints to get started with app compatibility.


Additional resources

Desktop Analytics

Deploy with confidence and keep your PCs up to date.

Office Readiness Toolkit

Use the Readiness Toolkit to assess app compatibility for Office 365 ProPlus.

Windows Insider Program for Business

Preview the next Windows security, management, and productivity features.



Additional FastTrack resources

Productivity Library

Discover simple examples to get the most out of Microsoft 365.

FastTrack journey

Learn about the steps involved in your cloud solutions deployment.

Frequently asked questions

Get answers to commonly asked questions about FastTrack.

Resource hub

Explore and download resources to manage adoption of cloud solutions.

Get started today

Sign in to FastTrack now.