Upgraded to windows 11 but lost office 2019

You should be able to install your Office Home and Student/Business 2019 from your Office Account at: https://account.microsoft.com/services You need to sign in with the same Microsoft Account that you used to purchase your Office from the Microsoft Store OR used with a Product Key purchased from a third party vendor.

Hello omgbbq23

Hi, I'm Karl and will be happy to help you today.

All consumer versions of Office would be permanently associated with the Microsoft Account used to purchase Office 2019 (if purchased from the Microsoft Store) or the account used to redeem a product key (if purchased from a 3rd party reseller). The license would be found in the <Services & Subscriptions> section of the applicable Microsoft account from which you can download and install it again

https://account.microsoft.com/services/

If you run into an activation error, you'll need to follow the instructions in the following article under the section

<Activate after reinstalling or moving Office>

Activate Office using the Activation wizard

https://support.office.com/en-us/article/activa...

If the license doesn't appear under your account - please provide which edition of Office 2019 was installed (i.e. Office Home & Student, Office Pro Plus etc etc) and where you purchased the license from?