Hi soulful_Thea,
Thank you for posting in the in the Microsoft community. We are happy to assist.
Based on the information you have shared with us; I understand you are having Error: Failed to load localized strings. To fully understand the scenario, I would like to ask some questions to narrow down the situation work toward the resolution.
May I know where you are getting the error? could you share with us the steps you performed before getting this error? please share with us the link that get this error.
May I confirm if the affected account has an Office 365 subscription. Are you using Microsoft 365 Business Basic, Standard, Enterprise, or Education? Alternatively, is it Microsoft 365 Family, Personal, Office 365 Home and Business, Office 365 Home, and Student, or a Personal (Outlook.com, Live.com, Hotmail.com) subscription or any third-party account?
Could you share with us the screenshot of the error page?
May I know the specific application where the error is being displayed?
Please feel free to share with us the above information it will help to know the exact steps we could use to remediate the error, if you have any further concerns, please feel free to reply here, we will work together to find a direction specific the situation.
Thank you for understanding and cooperation. I will be looking forward to your next updates.