OneDrive for Business - resize for all users at bulk

Question

Hello,i want to resize the limit of OneDrive size in our company. I know thath i can do it from M365 Admin Center. Now the limit is set to 20GB (e5/licenses 5TB). I want to resize to 100GB maybe more. But some users already have more than 100GB (some particular users has 1TB, some users has 500GB and so on). If i resize the limit for whole organisation, the system will shrink OD's for this particilular users to 100GB?

nikolinode · Answer

I think you’re right, to be cautious before bulk-resizing OneDrive storage limits across your organization.

Here’s how it works and what you need to know:

If you set a lower global storage quota (e.g., 100 GB) in the OneDrive admin center, users with more than 100 GB will be affected, but:

Their data is not deleted immediately.
They lose the ability to upload or create new content.
Their OneDrive becomes effectively read-only (they can view/download, but not modify or add files).
They will see storage exceeded warnings in their OneDrive portal.

Microsoft’s Official Behavior:

“If a user exceeds the storage quota that you assign, their OneDrive will become read-only. The user won't be able to add new files, but they can view or download their existing content.”

Source: Microsoft documentation

If you're trying to reduce the default quota without disrupting heavy users, do this:

Set a new default quota (e.g., 100 GB) in the OneDrive Admin Center.

This only affects users who haven't had a custom quota set.

For power users (those who already use >100 GB), set their quotas manually to a higher value

My answers are voluntary and without guarantee!

Hope this will help you.

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