Hi @DebbieE , Thank you for reaching out to the Microsoft Community Forum.
This is unlikely a permissions or configuration issue, especially if both Lakehouses were created in the same workspace and under the same user. It's almost certainly a UI glitch, not a backend failure. The upload is probably completing, but the file isn't showing in the UI due to a rendering issue. To confirm whether the file actually uploaded, open a notebook within the same workspace and run the following code:
display(dbutils.fs.ls("Files/"))
If your file, like test.csv, appears in the output, then the upload succeeded, it’s just the UI that failed to reflect it. From there, you can read and promote it to a Delta table. If the file doesn't appear, try uploading again. if it's in another language, make sure you’ve switched the Fabric UI to English and use an incognito window in Chrome or Edge to bypass any cached UI issues. After uploading, refresh the page immediately. These steps often resolve the display issue and allow the file to become visible.
If this helped solve the issue, please consider marking it “Accept as Solution” so others with similar queries may find it more easily. If not, please share the details, always happy to help.
Thank you.
