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articles/azure-monitor/agents/azure-monitor-agent-extension-versions.md

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## Version details
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| Release Date | Release notes | Windows | Linux |
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|:---|:---|:---|:---|
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| December 2023 |**Windows** <ul><li>Support New Agent Settings featuer that allows control of agent disk size and file location</li><li>Private Preview for new Agent side filtering via KQL Extension</li><li>Prevent CPU spikes by not using bookmark when resetting an Event Log subscription</li><li>Add missing fluentbit exe to AMA client setup for Custom Log support</li><li>Update to latest AzureCredentialsManagementService & DsmsCredentialsManagement package</li><li>Update ME to v2.2023.1027.1417</li></ul>**Linux**<ul><li>Support for TLS V1.3</li><li>Support for nopri in Syslog</li><li>Ability to set disk quota from DCR Agent Settings</li><li>Add ARM64 Ubuntu 22 support</li><li>**Fixes**<ul><li>SysLog</li><ul><li>Parse syslog Palo Alto CEF with multiple space characters following the hostname</li><li>Fix an issue with incorrectly parsing messages containing two '\n' chars in a row</li><li>Improved support for non-RFC compliant devices</li><li>Support infoblox device messages containing both hostname and IP headers</li></ul><li>Fix AMA crash in RHEL 7.2</li><li>Remove dependency on "which" command</li><li>Fix port conflicts due to AMA using 13000 </li><li>Reliability and Performance improvements</li></ul></li></ul>| 1.22.0 | 1.29.4|
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| December 2023 |**Windows** <ul><li>Support new settings that control agent disk size and file location</li><li>Prevent CPU spikes by not using bookmark when resetting an Event Log subscription</li><li>Added missing fluentbit exe to AMA client setup for Custom Log support</li><li>Updated to latest AzureCredentialsManagementService and DsmsCredentialsManagement package</li><li>Update ME to v2.2023.1027.1417</li></ul>**Linux**<ul><li>Support for TLS V1.3</li><li>Support for nopri in Syslog</li><li>Ability to set disk quota from DCR Agent Settings</li><li>Add ARM64 Ubuntu 22 support</li><li>**Fixes**<ul><li>SysLog</li><ul><li>Parse syslog Palo Alto CEF with multiple space characters following the hostname</li><li>Fix an issue with incorrectly parsing messages containing two '\n' chars in a row</li><li>Improved support for non-RFC compliant devices</li><li>Support infoblox device messages containing both hostname and IP headers</li></ul><li>Fix AMA crash in RHEL 7.2</li><li>Remove dependency on "which" command</li><li>Fix port conflicts due to AMA using 13000 </li><li>Reliability and Performance improvements</li></ul></li></ul>| 1.22.0 | 1.29.4|
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| October 2023| **Windows** <ul><li>Minimize CPU spikes when resetting an Event Log subscription</li><li>Enable multiple IIS subscriptions to use same filter</li><li>Cleanup files and folders for inactive tenants in multi-tenant mode</li><li>AMA installer will not install unnecessary certs</li><li>AMA emits Telemetry table locally</li><li>Update Metric Extension to v2.2023.721.1630</li><li>Update AzureSecurityPack to v4.29.0.4</li><li>Update AzureWatson to v1.0.99</li></ul>**Linux**<ul><li> Add support for Process metrics counters for Log Analytics upload and Azure Monitor Metrics</li><li>Use rsyslog omfwd TCP for improved syslog reliability</li><li>Support Palo Alto CEF logs where hostname is followed by 2 spaces</li><li>Bug and reliability improvements</li></ul> |1.21.0|1.28.11|
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| September 2023| **Windows** <ul><li>Fix issue with high CPU usage due to excessive Windows Event Logs subscription reset</li><li>Reduce fluentbit resource usage by limiting tracked files older than 3 days and limiting logging to errors only</li><li>Fix race-condition where resource_id is unavailable when agent is restarted</li><li>Fix race-condition when vm-extension provision agent (aka GuestAgent) is issuing a disable-vm-extension command to AMA.</li><li>Update MetricExtension version to 2.2023.721.1630</li><li>Update Troubleshooter to v1.5.14 </li></ul>|1.20.0| None |
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| August 2023| **Windows** <ul><li>AMA: Allow prefixes in the tag names to handle regression</li><li>Updating package version for AzSecPack 4.28 release</li></ul>**Linux**<ul><li> Comming soon</li></ui>|1.19.0| Comming Soon |
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| August 2023| **Windows** <ul><li>AMA: Allow prefixes in the tag names to handle regression</li><li>Updating package version for AzSecPack 4.28 release</li></ui>|1.19.0| None |
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| July 2023| **Windows** <ul><li>Fix crash when Event Log subscription callback throws errors.<li>MetricExtension updated to 2.2023.609.2051</li></ui> |1.18.0|None|
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| June 2023| **Windows** <ul><li>Add new file path column to custom logs table</li><li>Config setting to disable custom IMDS endpoint in Tenant.json file</li><li>FluentBit binaries signed with Microsoft customer Code Sign cert</li><li>Minimize number of retries on calls to refresh tokens</li><li>Don't overwrite resource ID with empty string</li><li>AzSecPack updated to version 4.27</li><li>AzureProfiler and AzurePerfCollector updated to version 1.0.0.990</li><li>MetricsExtension updated to version 2.2023.513.10</li><li>Troubleshooter updated to version 1.5.0</li></ul>**Linux** <ul><li>Add new column CollectorHostName to syslog table to identify forwarder/collector machine</li><li>Link OpenSSL dynamically</li><li>**Fixes**<ul><li>Allow uploads soon after AMA start up</li><li>Run LocalSink GC on a dedicated thread to avoid thread pool scheduling issues</li><li>Fix upgrade restart of disabled services</li><li>Handle Linux Hardening where sudo on root is blocked</li><li>CEF processing fixes for noncompliant RFC 5424 logs</li><li>ASA tenant can fail to start up due to config-cache directory permissions</li><li>Fix auth proxy in AMA</li><li>Fix to remove null characters in agentlauncher.log after log rotation</li><li>Fix for authenticated proxy(1.27.3)</li><li>Fix regression in VM Insights(1.27.4)</ul></li></ul>|1.17.0 |1.27.4|
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| May 2023 | **Windows** <ul><li>Enable Large Event support for all regions.</li><li>Update to TroubleShooter 1.4.0.</li><li>Fixed issue when Event Log subscription become invalid an would not resubscribe.</li><li>AMA: Fixed issue with Large Event sending too large data. Also affecting Custom Log.</li></ul> **Linux** <ul><li>Support for CIS and SELinux [hardening](./agents-overview.md)</li><li>Include Ubuntu 22.04 (Jammy) in azure-mdsd package publishing</li><li>Move storage SDK patch to build container</li><li>Add system Telegraf counters to AMA</li><li>Drop msgpack and syslog data if not configured in active configuration</li><li>Limit the events sent to Public ingestion pipeline</li><li>**Fixes** <ul><li>Fix mdsd crash in init when in persistent mode </li><li>Remove FdClosers from ProtocolListeners to avoid a race condition</li><li>Fix sed regex special character escaping issue in rpm macro for Centos 7.3.Maipo</li><li>Fix latency and future timestamp issue</li><li>Install AMA syslog configs only if customer is opted in for syslog in DCR</li><li>Fix heartbeat time check</li><li>Skip unnecessary cleanup in fatal signal handler</li><li>Fix case where fast-forwarding may cause intervals to be skipped</li><li>Fix comma separated custom log paths with fluent</li><li>Fix to prevent events folder growing too large and filling the disk</li><li>hot fix (1.26.3) for Syslog</li></ul><</li><ul> | 1.16.0.0 | 1.26.2-1.26.5<sup>Hotfix</sup>|
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| Apr 2023 | **Windows** <ul><li>AMA: Enable Large Event support based on Region.</li><li>AMA: Upgrade to FluentBit version 2.0.9</li><li>Update Troubleshooter to 1.3.1</li><li>Update ME version to 2.2023.331.1521</li><li>Updating package version for AzSecPack 4.26 release</li></ul>|1.15.0|None|
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| Mar 2023 | **Windows** <ul><li>Text file collection improvements to handle high rate logging and continuous tailing of longer lines</li><li>VM Insights fixes for collecting metrics from non-English OS</li></ul> | 1.14.0.0 | Coming soon |
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| Mar 2023 | **Windows** <ul><li>Text file collection improvements to handle high rate logging and continuous tailing of longer lines</li><li>VM Insights fixes for collecting metrics from non-English OS</li></ul> | 1.14.0.0 | None |
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| Feb 2023 | <ul><li>**Linux (hotfix)** Resolved potential data loss due to "Bad file descriptor" errors seen in the mdsd error log with previous version. Upgrade to hotfix version</li><li>**Windows** Reliability improvements in Fluentbit buffering to handle larger text files</li></ul> | 1.13.1 | 1.25.2<sup>Hotfix</sup> |
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| Jan 2023 | **Linux** <ul><li>RHEL 9 and Amazon Linux 2 support</li><li>Update to OpenSSL 1.1.1s and require TLS 1.2 or higher</li><li>Performance improvements</li><li>Improvements in Garbage Collection for persisted disk cache and handling corrupted cache files better</li><li>**Fixes** <ul><li>Set agent service memory limit for CentOS/RedHat 7 distros. Resolved MemoryMax parsing error</li><li>Fixed modifying rsyslog system-wide log format caused by installer on RedHat/Centos 7.3</li><li>Fixed permissions to config directory</li><li>Installation reliability improvements</li><li>Fixed permissions on default file so rpm verification doesn't fail</li><li>Added traceFlags setting to enable trace logs for agent</li></ul></li></ul> **Windows** <ul><li>Fixed issue related to incorrect *EventLevel* and *Task* values for Log Analytics *Event* table, to match Windows Event Viewer values</li><li>Added missing columns for IIS logs - *TimeGenerated, Time, Date, Computer, SourceSystem, AMA, W3SVC, SiteName*</li><li>Reliability improvements for metrics collection</li><li>Fixed machine restart issues on for Arc-enabled servers related to repeated calls to HIMDS service</li></ul> | 1.12.0 | 1.25.1 |
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| Nov-Dec 2022 | <ul><li>Support for air-gapped clouds added for [Windows MSI installer for clients](./azure-monitor-agent-windows-client.md) </li><li>Reliability improvements for using AMA with Custom Metrics destination</li><li>Performance and internal logging improvements</li></ul> | 1.11.0 | None |

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