The splash screen hangs for 347 milliseconds—an eternity in 2010-time. The ribbon renders: , Workflow , External Content Type . Each icon a fossil of on-premises ambition. 64-bit addressing means nothing if the data source is a dying Access database on a forgotten file share.
Approval → Rejection → Feedback Loop (stuck in 1972). No REST API. No Graph. Just SOAP endpoints wrapped in guilt. You drag "Send an Email" onto the canvas. The email never arrives. Exchange picks that day for maintenance. Your workflow pauses at Wait for Field Change —indefinitely.
In the end, you export the site as a .WSP. Visual Studio 2010 refuses to open it. You rename it to .CAB, extract manually, and cry over the Elements.xml. The 64-bit world promised more memory, not more sense.
The error is always: “The workflow could not update the item, possibly because one or more columns require a different type of information.” And yet, it tries again tomorrow.