How do I fix this error in Power Automate?

I work for the Federal government, Veterans Affairs. I use many Power Platform products. I received a new computer this week and ever since all of my Power Automates are failing. I get the follow in the error inside the flow:

{  "status": 401,  "message": "Lifetime validation failed, the token is expired.\r\nclientRequestId: 6b25031c-3225-473a-b0b3-70c602a54daf\r\nserviceRequestId: 7d9a71b7-60d7-46e6-bb8f-eae68a9a70cb",  "error": {    "message": "Lifetime validation failed, the token is expired."  },  "source": "excelonline-usgv.azconn-gcc-usgv-001.p.azurewebsites.us"}

I have reauthenticated in the Power Automate website and it says all of my Connections are valid. Then when a flow tries to run, it errors out. How do I correct this issue?

I also had Power BI reports fail. I had to go into the settings of each report and edit my credentials for the reports to run again. In the Power BI Desktop, it forces me to re-sign in to SharePoint, which is where my datasources reside.

Thank you, Wendy Culp