An integrated threat protection solution designed to detect, investigate, and respond to cyber threats across Microsoft 365 services.
Hi Miriam,
Thank you for reaching out to about your issue with the Microsoft 365. I understand its really frustrating when its not running let me help. To start with this please check your current subscription status click File, select Account and go to Product information. Afterwards you need to verify the new product key be sure its 25 characters and to redeem it sign in to your Microsoft account at https://www.microsoft365.com and go to Microsoft Account, select Services & Subscriptions and Redeem a Product Key or Add a new subscription.
I hope this answer is helpful if you have further questions feel free to reply back
Regards,
Marcelo