Hello @Iain Stephen , applications URL such as homepage, reply or logout are configured in the application object itself so in order to change any of those values you need the application to be hosted in your tenant. Applications such as the OfficeHome (appId 4765445b-32c6-49b0-83e6-1d93765276ca
) are special applications which hosted in a special Microsoft tenant, thus there's no way to configure any of those URL.
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