Disable adding schedules for offline pages: registry value NoAddingSubscriptionsUserHKCU\Software\Policies\Microsoft\Internet Explorer\Infodelivery\Restrictions

Policy ID
NoAddingSubscriptions
Scope
User Configuration
Supported on
Only Internet Explorer 5.0 and Internet Explorer 6.0
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
Windows Components › Internet Explorer › Offline Pages

Registry

NoAddingSubscriptions

-User