400 Error connecting to existing datasets

[Anonymous]

Hi all - I've got a user who is unable to connect to any of the datasets currently in any of our Service workspaces. I'm able to connect to them fine, and he can see the full list of datasets when he follows Get Data>Power BI Dataset, but when he attempts to connect to any of these (even the ones in his own workspace) he gets a (400) Bad Request error.  Looking at the giant error message he got by copying it to his clipboard, this part jumped out at me:

PowerBINonFatalError:

{"AppName":"PBIDesktop","AppVersion":"2.110.805.0","ModuleName":"Microsoft.PowerBI.Client.Windows.dll","Component":"Microsoft.PowerBI.Client.Windows.Services.UIBlockingService","Error":"System.Net.WebException","MethodDef":"AllowModalDialogs","ErrorOffset":"43"}

Has anyone seen this before?

[sevenhills]

Typically, this happens either user is not authorized, credential issue, does not have permissions, firewall issues.

Based on your post, I doubt this is more related to firewall.

Also check this link https://learn.microsoft.com/en-us/power-bi/connect-data/desktop-error-launching-desktop

[Anonymous]

Thanks - it doesn't seem to be any of those issues. Further experimentation has showed us that this user is able to connect to this dataset in other .pbix files; the issue is limited to one specific pbix. Some setting in that .pbix is preventing him from connecting. There is some overlap between the tables in the pbix's existing dataset and the tables in the dataset we're importing; I wonder if that's part of the issue.