Hello ​@Wilson. S.7! Welcome to the Box Community, and thanks for bringing this up.

This error message appears when either the user's own account or the account of the owner of a shared file or folder has reached the storage limit.
 

It looks like you're collaborating on a shared file. Please reach out to the owner so they can review their storage allocation, free up space, or upgrade if necessary. Afterward, try uploading your content again.

Feel free to reach out if you have any other concerns. 

I can’t adjust any documents any more and cannot upload documents because I get this notification for the past few days. However, my storage in the left down corner says that it’s not full. 

Hi ​@EsmeeBeldman, welcome to the Box Community! I’ve moved your post to this related topic.

If your storage isn’t full but you’re still seeing an error, it's likely because you're collaborating on a shared folder. This error can occur when the owner of the shared folder is running low on storage space.

As mentioned above, to resolve this, please contact the folder owner and ask them to check their available storage.

Thanks, and have a great day!

I am yet another person with a storage problem……. My account shows that I am using only 1.8MB of my 10.0 GB storage limit but every time I try to upload a new document to the box it says I am out of storage my limit and need to upgrade. I have logged out, reset my computer and browser history and tried this over several days and I keep getting the same message that I am out of storage space. I do not know what to do and it is very frustrating

Hello ​@LFS, welcome to the Box Community! I completely understand your frustration, and I’m sorry about the experience.

Similar to the topic discussed here, you’re most likely collaborating in someone else’s folder. This error typically appears when the content owner's account has reached its storage limit. Please reach out to the folder owner to check their storage and help resolve the issue.

Thank you, and I look forward to getting this sorted out.

アカウントのストレージ容量の上限に達しました。なぜこのメッセージが表示されるのですか？
(Your account storage size limit has been reached.　Why does this appear?)

Hi ​@Masaki Kanda, welcome to the Box Community! I’ve moved your post to this related topic.

If you're uploading to someone else's folder and their account storage is full, this message will appear. In that case, please reach out to the folder owner to check their storage usage.
 

On the other hand, if the user is part of your organization but has limited storage, the admin can increase their storage allocation. To edit a managed user:

1. Go to Admin Console > Users and Groups.
2. Click the Managed Users tab.
3. Click the user name.
4. Make any desired changes, including adjusting storage (you can set it to unlimited, depending on your account type).

Let us know if you have any other inquiries. 

I’m trying to upload a file to Box, but I’m receiving a message that I’ve reached the account limit. However, the account only has 9 GB of storage used, and it’s supposed to have unlimited storage. How can I resolve this? I haven’t been able to find any support contact to report the issue.

Hi ​@Kiwi55, welcome to the Box Community! I've moved your post here, as your concern relates to the same issue discussed in this thread.

While your account includes unlimited storage, you may encounter an error if you're uploading to someone else's account that has limited storage and is already at capacity. As a first step, please check with the user to confirm their storage limit.

If applicable, you can also refer to the steps outlined in this thread on how an admin can update the storage allocation for a managed user within the same organization.

For future reference, you can visit https://support.box.com/ > Account & Billing > Contact Support to submit a ticket and connect with our support team.

Wishing you a wonderful day!