Your Box migration finishes overnight, but the next morning the support requests begin. A project team cannot open a folder it used the day before, Finance finds documents in the wrong SharePoint library, and employees keep clicking old Box links that no longer lead to the files they need. The files may have moved, but the way people access and work with them has not moved cleanly with them. In our SharePoint migration work at Code Creators, we have seen these problems come up when folder ownership, user access, destination libraries, and shared content are not mapped clearly before the transfer. That experience has shown us that many post-migration issues start with decisions made before any files move, not with the transfer itself.
In this article, you will learn how to complete a Box to SharePoint migration, choose the right migration tool, prepare your Box data, map content and permissions, and verify that files work correctly in SharePoint after the move.
How Do I Move Files from Box to SharePoint?
For a business migration, the most direct Microsoft-supported option is Migration Manager. You connect your Box environment to Microsoft 365, scan the source data, assign SharePoint destinations, map user identities, and then run and monitor the migration. Microsoft copies the selected Box content into SharePoint rather than deleting it from Box.
If you only need to copy files from Box to SharePoint for a small one-time task, downloading files from Box and uploading them to a SharePoint document library may be enough. However, this approach becomes difficult to control once you have many users, large folder structures, permissions, or metadata to manage.
For larger business environments, use a migration tool rather than relying on manual downloads and uploads.
Prepare Your Box Environment Before the Migration
The quality of a migration depends heavily on the work you do before the first file moves. Copying everything exactly as it exists in Box can transfer years of unnecessary folders, outdated content, and inconsistent access rules into SharePoint.
Start by identifying the Box users, folders, and files that still serve a business purpose. Separate active content from duplicate, obsolete, or temporary files. Also review content owned by inactive accounts and files shared with people outside your organization.
Microsoft’s Migration Manager includes a scan and assessment stage that lets you identify potential migration issues before starting the transfer. Although Microsoft makes this step optional for Box migrations, running it can expose problems that would otherwise appear during the migration itself.
Cleaning the source first also makes the new SharePoint environment easier for employees to navigate.
Decide Where Box Content Should Go in SharePoint
Do not recreate every Box folder automatically in one large SharePoint library.
Instead, decide which SharePoint site and document library should own each group of content. In the SharePoint migrations we work on, content is easier to manage when its destination reflects who owns it and how teams use it day to day. Mapping content this way before the transfer also prevents unrelated files from being grouped into large libraries that users later struggle to navigate.
This mapping matters because Migration Manager requires a destination for each migration task. Microsoft allows Box content to move to SharePoint, OneDrive, or Teams destinations, and once a migration starts against a destination, you cannot change that destination for the existing task.
Create and validate your destination structure before the main migration rather than reorganizing everything during the transfer.
Choose the Right Box to SharePoint Migration Tool
Microsoft Migration Manager is usually the first Box to SharePoint migration tool to evaluate because Microsoft provides it specifically for moving cloud content, including Box data, into Microsoft 365.
You can access a Box migration project through the Microsoft 365 admin environment and connect the source Box account by authorizing the Microsoft 365 migration application. From there, Migration Manager supports scanning, destination assignment, identity mapping, migration monitoring, reports, and incremental migration runs.
However, native Migration Manager does not reproduce every Box feature in SharePoint. If your migration depends heavily on historical file versions, external sharing relationships, advanced Box metadata, or other source-specific features, review those requirements before selecting the tool.
A third-party migration product may make sense when your requirements extend beyond what Microsoft’s native migration process transfers. The decision should come from the data you need to preserve, not simply the amount of storage you need to move.
How to Migrate Data from Box to SharePoint
Once you have cleaned the source and prepared SharePoint, you can begin the migration process.
1. Connect Box to Microsoft 365
Create a Box migration project and authenticate the Box account that has access to the content you intend to migrate. Microsoft also requires the appropriate Microsoft 365 administrative permissions on the destination tenant.
Before moving further, confirm that the migration account can see all required Box content. Migration Manager only copies files and folders accessible to the account involved in the migration.
2. Scan and Assess the Source Content
Run a scan before the migration and review the results for files that may fail or require attention.
Look closely at unusually large files, unsupported items, long paths, inaccessible content, and naming problems. Microsoft provides scan reports and detailed migration reports specifically to help administrators identify task- and file-level problems.
Resolve these issues before the main transfer wherever possible. It is much easier to fix a source problem before thousands of files reach SharePoint.
3. Map Box Content to the Correct SharePoint Destinations
Assign each Box migration task to its intended SharePoint site, library, or folder.
For a small migration, you can set destinations individually. For larger projects, Migration Manager also supports bulk destination mapping through CSV files. Microsoft validates uploaded destination paths so you can correct mapping errors before starting the transfer.
Review these mappings carefully. From the migrations we handle, one issue we regularly see is files transferring successfully but landing in SharePoint locations that do not match how teams actually work. The migration may report no transfer errors, yet users still face unnecessary navigation and access problems afterward.
4. Map Users and Permissions
Next, map Box users and groups to the corresponding identities in Microsoft 365.
Identity mapping helps Migration Manager transfer supported file metadata and permissions to the correct users and groups.
However, do not assume every Box sharing arrangement will appear exactly the same in SharePoint. Microsoft does not recreate external sharing links, and it does not automatically reshare migrated files with external collaborators. You need to review those relationships and recreate the required external access in Microsoft 365 after the migration.
5. Run a Pilot Migration
Before moving the entire Box environment, migrate a representative set of content.
Choose folders that include normal documents, nested folders, shared files, different permission levels, and any content types that matter to your users. Then ask a small group of employees to verify that they can open, edit, search, and share the migrated files correctly.
A pilot gives you a chance to fix destination or access problems before they affect the entire organization.
6. Run the Main Migration and Incremental Passes
After the pilot succeeds, start the larger migration and monitor its reports for warnings and failures.
Migration Manager supports incremental, or delta, runs. After the initial transfer, another pass compares Box with the Microsoft 365 destination and copies files that are new or have a newer timestamp. This makes it possible to move most data first and capture recent changes closer to the final cutover.
Avoid renaming or reorganizing migrated folders while these incremental runs continue. Microsoft warns that structural changes during this stage can cause duplicate folders or files because the migration process may treat renamed content as new content.
What Does Not Move Automatically from Box?
One of the most important parts of a Box to SharePoint migration is knowing what the tool does not preserve.
Migration Manager transfers accessible files and folders, but some Box-specific information requires separate handling. For example, Microsoft does not preserve previous file versions during a Box migration; only the latest version transfers. External sharing links also need to be recreated after the move.
Microsoft also lists Box Tags, advanced metadata, file and folder descriptions, comments, file-lock attributes, trashed items, Box Apps, Bookmarks, Favorites, and Workflows among the content that its migration services do not carry into Microsoft 365. Box Notes can move, but Migration Manager converts them to Word documents, and some Box Note elements do not transfer during conversion.
Review these items before migration rather than discovering their absence after users begin working in SharePoint.
Validate the SharePoint Environment Before Closing Box
Do not treat a “Completed” migration status as the final sign-off.
Compare the number of migrated files and failed items with your source inventory. Review Microsoft’s migration summary and detailed reports, then investigate warnings and rerun failed tasks after correcting the underlying issue.
Next, test the environment from the user’s perspective. Confirm that employees can reach their document libraries, open their files, edit documents, and access folders that match their responsibilities. Check important metadata and permissions as well as any external sharing relationships that you need to rebuild.
Only after these checks should you finalize the cutover and stop users from adding new content to Box.
Best Practices for a Smoother Box to SharePoint Migration
Keep the migration predictable. Clean Box before moving data, design SharePoint around how teams actually use their documents, and test the migration with real users before the main cutover.
Most importantly, separate the initial migration from the final cutover. Move the bulk of your files first, resolve failures, run incremental passes for new or changed content, and then switch users to SharePoint once you have verified the final data set. This approach reduces the chance of files changing in two systems at the same time.
Also communicate the changes that users will notice. We also see users struggle after migration when familiar folders appear in different locations or the Box links they previously relied on no longer provide the same access. Preparing users for these changes before cutover helps reduce confusion and unnecessary support requests.
Move from Box to SharePoint with Code Creators
A Box to SharePoint migration needs more than transferring files from one platform to another. At Code Creators, we help businesses plan where content should move, map users and permissions, configure the migration process, and verify that files remain accessible and organized after the cutover.
We also review migration reports, resolve transfer issues, and help structure SharePoint around how your teams actually work with their documents. This reduces the risk of completing the migration successfully on paper while leaving users with misplaced content, broken access, or unnecessary cleanup afterward.
If you are preparing to move from Box to SharePoint, schedule a consultation with Code Creators to plan a migration that fits your content, users, and SharePoint environment.
Conclusion
A successful Box to SharePoint migration depends on more than transferring files from one platform to another. You need to know where each set of content should go, who should retain access, and which Box features will require separate handling after the move.
For most business migrations, Microsoft Migration Manager provides a practical way to migrate data from Box to SharePoint through source scanning, destination mapping, identity mapping, reporting, and incremental migration runs. However, limitations around previous file versions, external sharing links, advanced metadata, and other Box-specific features make it important to identify these gaps before the final cutover.
Before retiring Box, verify the migrated files against the source, resolve migration report errors, test permissions with actual users, rebuild the external access you still need, and complete a final incremental transfer. These checks help ensure that users can start working in SharePoint without dealing with missing content, incorrect access, or additional cleanup after the migration.
Before you make the final move, have our SharePoint migration team review your content mapping, permissions, and cutover plan so you can identify migration gaps before they affect your users.
