A family of Microsoft word processing software products for creating web, email, and print documents.
Hi Lara,
This seems to be an ongoing problem with the Office apps for a couple of days which may be caused by an update, there are many people reporting this problem.
Before performing this process to ensure you do not loose the Office installation during the repair, please log into your Microsoft account on this link (https://account.microsoft.com/services/) and check to ensure your Office licence or Microsoft 365 subscription is listed correctly on your account.
Open the Settings App (gear icon on your Start Menu)
Go to Apps - Installed Apps or Apps and Features
Then, scroll down to find Microsoft Office or Microsoft 365.
Select that and choose Modify - Online Repair
That should fix any issues with your Office Installation.