If you’re using Microsoft Office and see the error:

Error Code: 0xc004d307
“There Was an Error When Trying to Rearm Office”

—you’re not alone. This issue usually occurs when you’ve already rearmed Office the maximum number of times allowed. But don’t worry — there’s a simple fix.

Why Does Error 0xc004d307 Happen?

Microsoft Office allows a limited number of “rearms” (reactivation attempts) before you must enter a valid license key. If you exceed that limit, Office will block further attempts, triggering this error.

Quick Fix – Pass the SKU ID

One effective solution is to pass the SKU ID during reactivation.

I Created a step by step Youtube Guide showing exactly how to do this.

Watch the full tutorial Here: There Was an Error When Trying to Rearm Office