Why SharePoint Migrations Fail

Most SharePoint migrations do not fail because the copy tool cannot move files. They fail because the project underestimates ownership, permissions, workflows, information architecture, communications, and validation.

A migration tool can move content. It cannot decide what the business should keep, who should own it, which processes need modernization, or what governance model should exist after go-live.

Common failure patterns

• No reliable site owner list
• Broken inheritance and direct user grants copied without review
• Legacy workflows discovered late in the project
• InfoPath forms treated as isolated screens instead of business processes
• File shares mapped into SharePoint without redesigning information architecture
• Teams, SharePoint, and OneDrive treated as separate projects
• Business users asked to validate content without a clear checklist
• No hypercare plan after cutover

What reduces risk

• Start with an assessment and risk register
• Run source inventory before target design decisions are finalized
• Rationalize content, forms, and workflows before migration waves
• Run pilot waves with representative sites and users
• Define go/no-go criteria before cutover
• Validate business processes, not only item counts
• Plan post-migration hypercare and admin handover

Watch for hidden dependencies

SharePoint environments often contain dependencies that are easy to miss:

• SharePoint Designer workflows
• Nintex workflows
• InfoPath forms
• Custom web parts or scripts
• Third-party integrations
• Scheduled jobs
• Reporting exports
• Service accounts
• External sharing patterns

Discover these before the migration schedule becomes fixed.

The real success metric

The migration should leave the organization with a Microsoft environment that is easier to operate than the one it replaced. That means clearer ownership, safer permissions, fewer unsupported dependencies, and a target architecture that users understand.

Next step

Start with a Microsoft Migration Readiness Assessment. If your SharePoint environment includes legacy forms or workflows, include Form Migrator and Flow Migrator in the discovery plan.