Getting Access Denied when registering Custom Functions

[rsmith0906]

Bug Report

• Host: EXCEL Desktop
• OS: Windows 11
• Environment: beta

Behavior:

Currently I'm running Script Lab locally at localhost:3000 and if I follow the steps to run it from the Public Add-in Store instance of Script Lab and redirect it to use localhost:3000 I can Register Custom functions.

I installed a Dev Instance of the Add-in that is sideloaded and when I use the localhost:3000 instance of the add-in it errors with Access Denied when I try to register a custom function. This was working yesterday and now its now working today. Has something changed within the last day?

Failure Logs:

Error:
{
"stack": "RichApi.Error: You cannot perform the requested operation.\n at new n (https://appsforoffice.microsoft.com/lib/beta/hosted/excel-win32-16.01.js:26:264654)\n at o.processRequestExecutorResponseMessage (https://appsforoffice.microsoft.com/lib/beta/hosted/excel-win32-16.01.js:26:329270)\n at https://appsforoffice.microsoft.com/lib/beta/hosted/excel-win32-16.01.js:26:327332",
"message": "You cannot perform the requested operation.",
"name": "RichApi.Error",
"code": "AccessDenied",
"traceMessages": [],
"innerError": null,
"debugInfo": {
"code": "AccessDenied",
"message": "You cannot perform the requested operation.",
"errorLocation": "CustomFunctionManager.register",
"statement": "v.register(...);",
"surroundingStatements": [
"var workbook = context.workbook;",
"var v = Microsoft.ExcelServices.CustomFunctionManager.newObject();",
"// >>>>>",
"v.register(...);",
"// <<<<<"
],

Screenshot: