I have followed the instructions here:
I downloaded and installed visual studio with all the required addins.
When I press F5 to start it did work and loaded in excel yesterday.
On restarting my machine today, it won't work I have followed the guidelines here on debugging too: https://docs.microsoft.com/en-us/office/dev/add-ins/develop/debug-office-add-ins-in-visual-studio
I have run the following again to ensure in case it needed resetting after reloading visual studio.
Name : Microsoft.Win32WebViewHost Publisher : CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US Architecture : Neutral ResourceId : neutral Version : 10.0.18362.449 PackageFullName : Microsoft.Win32WebViewHost_10.0.18362.449_neutral_neutral_cw5n1h2txyewy InstallLocation : C:\Windows\SystemApps\Microsoft.Win32WebViewHost_cw5n1h2txyewy IsFramework : False PackageFamilyName : Microsoft.Win32WebViewHost_cw5n1h2txyewy PublisherId : cw5n1h2txyewy IsResourcePackage : False IsBundle : False IsDevelopmentMode : False NonRemovable : True IsPartiallyStaged : False SignatureKind : System Status : Ok
setx JS_DEBUG Microsoft.Win32WebViewHost_10.0.18362.449_neutral_neutral_cw5n1h2txyewy
It still does not work. I get dialog error with following:
One or more errors occured. Failed to laucnh debug adapter. Additional information may be available in the output window. the operation was cancelled.
In output window
The program 'excel.exe' has exited with code -1 (0xffffffff). The program ' iisexpress.exe' has exited with code 0 (0x0).
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