Unauthorized access exception when updating WorkPoint 365

When you update WorkPoint 365, you may run into an issue resulting in an Unauthorized Access exception in the WorkPoint Event Log. This issue stems from the fact that during the update, the Modern UI app is also updated. This app lives in the tenant app catalog and updating the Modern UI app requires that the tenant app catalog site allows custom scripts to run.

If the app catalog has custom scripts blocked, the following exception(s) will appear in the WorkPoint Event Log:

To solve this issue, please ensure that your tenant app catalog site allows custom scripts:

Note that when you allow custom scripts on the tenant app catalog site, this setting will automatically be reverted to "Blocked" after 24 hours. To prevent this automatic behaviour, you can use the following PowerShell command: