> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/xdr-agent-release-notes/9.1/cortex-xdr-agent-release-information/addressed-issues/addressed-issues-911.md).

# Addressed issues in Cortex XDR agent 9.1.1

The following issues have been resolved in this release.

| ISSUE       | PLATFORM | DESCRIPTION                                                                                                             |
| ----------- | -------- | ----------------------------------------------------------------------------------------------------------------------- |
| CPATR-36823 | Windows  | Fixed an issue to improve compatibility when using Java Web Marker.                                                     |
| CPATR-36793 | Windows  | Java module improvements                                                                                                |
| CPATR-36649 | General  | Fixed an issue where an invalid hardware ID may cause an agent installation or upgrade to fail.                         |
| CPATR-36464 | Windows  | Improvement made to the Cortex XDR agent security posture.                                                              |
| CPATR-36036 | Windows  | Improvement made to the Cortex XDR agent security posture.                                                              |
| CPATR-36015 | Windows  | Fixed an issue to improve the Cortex XDR agent stability posture.                                                       |
| CPATR-35766 | macOS    | Fixed an issue to improve the Device Control feature.                                                                   |
| CPATR-35036 | Windows  | Fixed a rare issue that may be encountered during low-memory edge cases.                                                |
| CPATR-35053 | Linux    | Fixed an issue to improve the Cortex XDR agent stability posture.                                                       |
| CPATR-33194 | Linux    | Fixed an issue that may occur in Ubuntu/Debian systems where other services inadvertently restart during agent upgrade. |
| CPATR-31582 | General  | Fixed an issue to improve performance during a malware scan.                                                            |


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