"Server is not reachable" when opening particular report from Server in Desktop

[rwmnau]

I have a report that, starting this morning, is not rendering in Power BI Server (January 2021 - 1.10.7698.27886) - when I load the report, the circle in the middle spins for maybe 30 seconds, and then it disappears and I'm left with a blank screen. When I attempt to open it in Power BI Desktop (using the "Edit in Power BI Desktop" button, Power BI Desktop shows the loading screen for a few seconds and then shows a "Server is not reachable" error:

Reports that I haven't touched since our upgrade to January (from September, I think) a week ago are working just fine - this is happening to both new reports I published last week and a report I updated last week through Power BI Desktop. 

Looing at the details, it seems like it has something to do with accessing a file:

Stack Trace:
at Microsoft.PowerBI.Client.Windows.Storage.FileOpenError.HandleError(IWindowService windowService, LocalizedString title)

PowerBINonFatalError:
{"AppName":"PBIDesktop","AppVersion":"2.88.2361.0","ModuleName":"Microsoft.PowerBI.Client.Windows.dll","Component":"Microsoft.PowerBI.Client.Windows.Storage.FileOpenError","Error":"Microsoft.PowerBI.Client.Windows.Storage.FileOpenException","MethodDef":"HandleError","ErrorOffset":"114"}

Is anybody else seeing this error or can provide some help?

I've confirmed the other reports are displaying as expected and I can edit them in Desktop directly from Server, so it isn't a firewall or connectivity issue - it's only happening in reports that I've published or updated since we upgradeds to the January release.

[V-pazhen-msft · Accepted solution]

@rwmnau 
Did you also update to the newest Desktop version for RS? Maybe try resave the report to the sever, then try edit again. 

I did not experience this error but maybe you can refer to this fix:
Power BI Report Server – fixing the “Server is not reachable” Error – Random Procrastination (gosbel...

Paul Zheng _ Community Support Team
If this post helps, please Accept it as the solution to help the other members find it more quickly.