The DispatcherServlet adds a default InternalViewResolver which was used by some apps, but when the actuator was available it added an "/error" bean and effectively switched off the default view resolver. The net fix was to add an InternalViewResolver at the same time as adding any other ViewResolvers. [Fixes #55357516] [bs-290] Actuator UI app cannot serve static index.html
Spring Boot - Samples
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