Windows Server 2008 R2 max open files limit

Solution 1:

Windows Servers have limitations on maximum connected users and maximum open files per session. These are default settings:

• Maximum Logged On Users: 16777216
• Maximum open files per session: 16384

You can view them with net config server command.

Solution 2:

Windows have limits on the number of Open File Handles.It will be around 16,711,680 on 64 bit machines and on 32 bit machines it will be 16,744,448.

64 BIT

32 BIT

This is the reference Microsoft Blog Post Pushing the Limits of Windows by Mark Russinovich https://blogs.technet.microsoft.com/markrussinovich/2009/09/29/pushing-the-limits-of-windows-handles/