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Microsoft 365 and Office | Install, redeem, activate | For education | Windows
Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
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Dear @Chanell Rykheer,
I hope you’re having a good day.
I’m really sorry you are dealing with this after the motherboard was replaced.
What’s happening here is not actually a problem with your Microsoft school account or the Office license itself. When a laptop’s motherboard is changed, Windows and Microsoft 365 treat the device as a completely new computer. For school‑managed devices, the hardware identity of the laptop is usually registered with the school’s Microsoft 365 tenant. After the motherboard change, the old device record no longer matches the new hardware, which causes Windows sign‑in and device verification errors such as error 80190190.
Because the device is no longer recognized correctly by the school’s system, Microsoft 365 desktop apps like Word and Excel cannot validate the license on that device. That’s why the apps show “Unlicensed Product” and stay in view‑only mode, even though you can still sign in to the school account online.
Unfortunately, there isn’t a way to “reset” this from the Microsoft account side alone, and it doesn’t require admin access on the laptop itself. The issue sits at the device registration level in the school’s Microsoft 365 environment. Only the school’s IT administrator can remove the old device record and allow the laptop to be set up again as a new device or guide you through a full Windows reset and re‑enrollment if that’s how their devices are managed.
If the school is unable to assist, the practical options are limited. Without school admin involvement, Office desktop apps won’t be able to activate on that device. As a temporary workaround, your son can still use Office on the web (Word, Excel, PowerPoint online) by signing in at office.com, which does not depend on the device being registered.
This behavior is expected after major hardware changes on school‑managed devices, and it’s designed this way to protect student accounts and school systems. I strongly recommend contacting the school again and explaining that the motherboard was replaced and the device now needs to be removed and re‑registered in their Microsoft 365 system.
I hope this helps clarify what’s going on, and I truly hope the school is able to assist you so your son can get back to working normally as soon as possible.
Warm regards,
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