# Endpoint agent 4.33.21

**URL:** <https://community.limacharlie.com/t/endpoint-agent-4-33-21/542>\
**Category:** Release Notes\
**Created:** [December 1, 2025, 6:10pm UTC](https://community.limacharlie.com/t/endpoint-agent-4-33-21/542 "2025-12-01T18:10:35Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Dmitri\_Zimine](https://yyz1.discourse-cdn.com/flex033/user_avatar/community.limacharlie.com/dmitri_zimine/32/45_2.png) [@Dmitri\_Zimine](https://community.limacharlie.com/u/Dmitri_Zimine)\
**Post date:** [December 1, 2025, 6:10pm UTC](https://community.limacharlie.com/t/endpoint-agent-4-33-21/542/1 "2025-12-01T18:10:35Z")

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Endpoint Agent 4.33.21

New Features  
Enhanced DNS Monitoring for Windows

- Added DNS event collection capabilities on Windows using Event Tracing for Windows (ETW)
- Enabled DNS request attribution to specific processes (PID) when applications use the Windows DnsCache service
- Implemented intelligent DNS deduplication with TTL-based caching to reduce redundant events and improve performance

Improvements  
Increased System Stability

- Improved reliability of sensor installation on Windows by adding automatic retry logic when system services temporarily lock required files
- Significantly reduced log verbosity during high-activity periods
- Increased internal buffer sizes for process and network tracking to better handle traffic bursts and reduce data loss

Enhanced Performance

- Expanded kernel-level network monitoring buffers to accommodate higher connection volumes
- Optimized default configuration settings for better out-of-the-box performance

Bug Fixes

- Resolved memory leak in file type tracking component