Can I re-install Microsoft Office (was pre-installed from HP)?

[BrianBB88]

Bought HP Laptop in 2020 with Windows 10 and Microsoft Office 2019 pre-installed.  I recently upgraded O/S to Windows 11....however that caused several issues due to lack of support drivers.  I re-installed windows 10, but lost all of my apps including Microsoft Office.

Since I purchased MS Office when I initially bought the computer, how can I re-install the program with out purchasing it again?  I do not see any type of activation key on my purchase order summary from HP.  Note: I talked to Microsoft support, and they were unable to tie Microsoft Office back to any of my email accounts.  Any insights are appreciated.  TIA.

[banhien]

@BrianBB88 

Did you register the product with Microsoft. If yes, please contact Microsoft (not HP) to re-activate the product. My experience: I've got MS Office on few machines, one day I could ONLY use MS Office on one machine, I had to contact MS to explain and they fixed that for me.

After that each my machine now has different OUTLOOK (ie Microsoft) account, I don't use same MS account for all my machines.

Regards.