Knowledge Base

CBFS Filter Articles

• CBFS Filter 2024 API Changes

  This article details the API differences between CBFS Filter and CBFS Filter 2024.

• CBFS Filter File Isolation

  CBFS Filter provides a robust driver library - much easier than working with Windows ACL. Work in .NET, Java, Delphi, Python, Rust, Go or C++.

• Version 2024 Updates

  Information and upgrade information for version 2024.

• Version 2024 Upgrade Guide

  Technical details about upgrading from version 2022 to version 2024.

• Version 2024 Updates

  Information and upgrade information for version 2024.

• CBFS Filter 2022 API Changes

  This article details the API differences between CBFS Filter 2020 and CBFS Filter 2022.

• Why are On*CloseFile events fired long after the file is actually closed?

  The reasons why you can observe delayed closing of a file

• How do I protect directory contents from modifications?

  How do I protect directory contents from modifications?

• How do I prevent file deletion using filter rules?

  How do I prevent file deletion using filter rules?

• What's New in CBFS Filter 2020

  CBFS Filter 2020 Upgrades and Migration Guide

• How can I use CBProcess to prevent a process from being started?

  Using CBProcess to prevent a process from starting.

• FileSystemWatcher and ReadDirectoryChangesW vs. CBFS Filter

  CBFS Filter enables you to emulate FileSystemWatcher, and much more.

• How can I create a file in a directory protected with a read-only access rule?

  How can I create a file in a directory protected with a read-only access rule?

• How can I make a directory read-only, but have its subdirectories be read-write?

  How to enforce read-only access on a directory, but not its subdirectories.

• Why doesn't my application receive events for mapped network drives?

  Discusses why filesystem operations for mapped network drives don

• Is there any integrity check to validate which process is using CBFS Filter?

  Is there any integrity check to validate which process is using CBFS Filter?

• How do I track file copying?

  How do I track file copying?

• How do I know which user initiated a filesystem event?

  How do I know which user initiated a filesystem event?

• In some cases I get a filename in ALL CAPS. What's wrong?

  In some cases I get a filename in ALL CAPS. What's wrong?

• How can I monitor the files in a directory, but not its subdirectories?

  How to monitor the files in a directory but not its subdirectories.

• I get a BSOD with the error code NO_MORE_IRP_STACK_LOCATIONS (35). What's that?

  I get a BSOD with the error code NO_MORE_IRP_STACK_LOCATIONS (35). What's that?

• How can I hide a directory?

  How to hide a directory

• Can I create files and directories that don't really exist on disk using CBFS Filter?

  How to create virtual files and directories using CBFS Filter.

• How can I attach the filter to a USB drive?

  How can I attach the filter to a USB drive?

• The OS caches the data read from a file after it's been decrypted by CBFS Filter. How do I prevent this?

  The OS caches the data read from a file after it's been decrypted by CBFS Filter. How do I prevent this?

• I need to monitor file operations on a server. Is this possible with CBFS Filter?

  Discusses feasibility of monitoring remote file operations.

• Is CBFS Filter a minifilter driver?

  Is CBFS Filter a minifilter driver?

• Can I use the GetOriginator* methods in the Notify* events?

  Discusses whether the GetOriginator* methods can be called during the Notify* events.

• Is it possible to create nested virtual directories?

  Is it possible to create nested virtual directories?

• Is it possible for a "real" file to reside in a virtual directory?

  Can a "real" file be created in, or moved to, a virtual directory?