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Why OneDrive Sync Can Become a Problem for Large Law Firm Intranets

August 28, 2026

SharePoint & OneDrive Performance

Why OneDrive Sync Can Become a Problem for Large Law Firm Intranets?

Thought Leadership | netDocShare

It usually starts with a simple complaint: “Why is my laptop so slow?”

OneDrive is still processing, the folder icon keeps spinning, and File Explorer barely responds.

The cause? Someone clicked Sync on a firm intranet library containing years of matter documents.

What seemed convenient in the morning can become a frozen laptop by lunch. This is often referred to as the “sync death spiral.” For large law firms, it is largely avoidable.

The Problem With Syncing at Scale

Microsoft recommends keeping the number of synced OneDrive items below roughly 300,000 files and folders for reliable performance. This includes items the user may not even have permission to open.

300K

Practical sync threshold. Beyond this scale, OneDrive can slow down, build queues, create conflicts, and in severe cases make File Explorer unresponsive.

That limit can be reached quickly in a law firm. A single matter library can contain hundreds of thousands of documents. Add multiple practice groups, deep folder structures, and constant document and metadata changes, and the local sync engine has a lot to keep track of.

Microsoft has started raising the limit to one million items for eligible Windows devices, but those devices need specific hardware and software requirements. Many existing firm laptops may not qualify, leaving the 300,000-item recommendation as the practical limit.

The Better Question: How Much Data Should Live on the Desktop?

Attorneys need access to their matter documents wherever they work. For some, that also means having files available offline.

The problem is not the amount of data a firm has. It is how much of that data gets pushed onto every device.

When an attorney syncs a large matter library, OneDrive starts copying and tracking those files locally. With hundreds of thousands of documents, that local workload can become a problem.

Online work

Access documents when needed

Keep the full document collection in NetDocuments and let SharePoint access it directly through an API.

Offline work

Sync selectively

Sync only the files or folders that are genuinely needed for offline work instead of copying the entire library.

Documents can appear in SharePoint or Teams when the attorney needs them, without the entire library being copied to the laptop.

For example, an attorney opens a matter in SharePoint and sees the folders and recent documents they need. The documents are pulled from NetDocuments rather than being continuously synced and indexed on the device.

This approach does not eliminate offline access. It makes it selective rather than automatic.

That distinction matters. The goal is not to keep attorneys away from their documents. It is to avoid turning every laptop into a local copy of the firm's entire document environment.

Why This Matters

The goal is not to take documents away from attorneys. It is to change where the documents live.

NetDocuments remains the source of the current document, while SharePoint provides the familiar place for attorneys to find and access it.

For Attorneys

The experience stays simple: find and work with the documents they need through a familiar SharePoint experience.

For IT

There is less local content to manage and fewer oversized sync jobs to troubleshoot.

For the firm, access to a large document environment does not have to mean putting that entire environment on every laptop.

What CIOs Should Ask Before the Next Rollout

Before enabling Sync across another large library, ask:

Which libraries currently have Sync enabled?
How many items do they contain?
Are attorneys syncing entire matter libraries for only a few files they use?
Could web-based access meet the same day-to-day needs?
Does the firm's hardware qualify for Microsoft's higher sync tier?

The solution is not necessarily a bigger laptop or a migration project.

It may simply be changing the default approach: give attorneys access to the documents they need without putting the entire matter library on their desktop.

Otherwise, the same problem will keep returning, one frozen laptop at a time.

Frequently Asked Questions

What is the OneDrive sync item limit?

For reliable performance, Microsoft recommends keeping synced OneDrive items below roughly 300,000 files and folders. Eligible Windows devices may support a higher one-million-item tier when specific requirements are met.

How can law firms avoid OneDrive sync limits?

Instead of syncing an entire large matter library to every device, firms can keep the main document collection in NetDocuments, surface it through SharePoint, and use local sync selectively for files that genuinely need offline access.

Can SharePoint show NetDocuments content without syncing it?

Yes. The article's proposed model is for SharePoint or Teams to access documents directly from NetDocuments through an API so attorneys can see and open what they need without continuously copying the whole library to the laptop.

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