Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.

This article describes an issue that occurs when you copy large files to clustered shared volumes (CSV) storage on Windows Server 2012 R2-based scale-out file servers. A hotfix is available to fix this issue. Before you install this hotfix, see theĀ Prerequisites section.


This issue occurs when the following conditions are true:

  • Scale-out file servers have more than 64 gigabytes (GB) of physical memory installed.

  • Scale-out file servers are set to use CSV storage.

  • The CSV cache is enabled, and the cache size is set to 64 GB or larger.

When this issue occurs, you receive the following error message:



To fix this issue, install MS15-115: Description of the security update for Windows: November 10, 2015.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


See the terminology that Microsoft uses to describe software updates.

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!