Hi， @smiths90 ；
1.When you sign in with your Microsoft account, be sure to select Keep me signed in. Power BI can then synchronize any updates you make in the file in Power BI Desktop with datasets in Power BI.
If you've changed your Microsoft credentials, you can't synchronize changes between your file on OneDrive and the dataset in Power BI. You need to connect to and import your file again from OneDrive.
https://docs.microsoft.com/en-us/power-bi/connect-data/refresh-desktop-file-onedrive
2.Data refresh can also fail due to expired cached credentials. Clear your internet browser cache by going signing into Power BI and going to https://app.powerbi.com?alwaysPromptForContentProviderCreds=true. This forces an update of your credentials.
3.You may encounter GatewayNotReachable when trying to set credentials for a data source. This can be the result of an outdated gateway. Install the latest gateway and try again.
https://docs.microsoft.com/en-us/power-bi/connect-data/refresh-troubleshooting-refresh-scenarios
4.Try reconnecting to desktop and publishing to service.
Is this issues just happened recently? It was normal to refresh before?
Best Regards,
Community Support Team_ Yalan Wu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
