why am I suddenly getting: ng : File C:\Users\d\AppData\Roaming\npm\ng.ps1 cannot be loaded

I've been happily using vscode/angular/node/npm for years without issue. Suddenly in the last hour or so without explicitly changing anything I'm getting the following error.

What are the most likely causes for the execute permissions, that were previously there, to suddenly be lost?

I hate having to say this in advance but to those that cannot comprehend I'm not asking about how to fix the error. I'm asking why my permissions were wiped causing it to appear.

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PS C:\Users\d> cd C:\source\my-WebApp
PS C:\source\my-WebApp> ng serve
ng : File C:\Users\d\AppData\Roaming\npm\ng.ps1 cannot be loaded. The file
C:\Users\d\AppData\Roaming\npm\ng.ps1 is not digitally signed. You cannot run this script on the current system.
For more information about running scripts and setting execution policy, see about_Execution_Policies at
https:/go.microsoft.com/fwlink/?LinkID=135170.
At line:1 char:1
+ ng serve
+ ~~
+ CategoryInfo : SecurityError: ) [], PSSecurityException
+ FullyQualifiedErrorId : UnauthorizedAccess
PS C:\source\my-WebApp>


Obviously this is the fix: PS C:\source\my-WebApp> Get-ExecutionPolicy -list

Scope ExecutionPolicy
----- ---------------
MachinePolicy Undefined
UserPolicy Undefined
Process Undefined
CurrentUser Undefined
LocalMachine AllSigned


PS C:\source\my-WebApp> set-ExecutionPolicy RemoteSigned -Scope CurrentUse

Execution Policy Change
The execution policy helps protect you from scripts that you do not trust. Changing the execution policy might expose
you to the security risks described in the about_Execution_Policies help topic at
https:/go.microsoft.com/fwlink/?LinkID=135170. Do you want to change the execution policy?
[Y] Yes [A] Yes to All [N] No [L] No to All Suspend [?] Help (default is "N"): Y
PS C:\source\my-WebApp> Get-ExecutionPolicy -list

Scope ExecutionPolicy
----- ---------------
MachinePolicy Undefined
UserPolicy Undefined
Process Undefined
CurrentUser RemoteSigned
LocalMachine AllSigned

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