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---
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- title : Configure Offline Security Intelligence Update for Microsoft Defender for Endpoint on Linux (preview)
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+ title : Configure Offline Security Intelligence Update for Microsoft Defender for Endpoint on Linux
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description : Offline Security Intelligence Update in Microsoft Defender for Endpoint on Linux.
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ms.service : defender-endpoint
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ms.subservice : linux
@@ -15,7 +15,7 @@ ms.collection:
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- mde-linux
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ms.topic : conceptual
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search.appverid : met150
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- ms.date : 03/28 /2025
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+ ms.date : 03/31 /2025
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---
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# Configure offline security intelligence update for Microsoft Defender for Endpoint on Linux
@@ -266,33 +266,34 @@ offline_definition_update_fallback_to_cloud : false[managed]
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## Troubleshooting and diagnostics
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- ### Issues: MDATP update failure
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+ If updates fail, are stuck, or don't start, follow these steps to troubleshoot:
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- - Update stuck, or update didn't trigger.
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- - Update failed.
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+ 1 . Check the status of offline security intelligence updates by using the following command:
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- ### Common troubleshooting steps
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+ ``` bash
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+ mdatp health --details definitions
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+ ```
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- - Check the status of the "offline security intelligence update" feature by using the following command:
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+ Look for information in the ` definitions_update_fail_reason ` section.
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- ``` bash
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- mdatp health --details definitions
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- ```
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+ 2 . Make sure that ` offline_definition_update ` and ` offline_definition_update_verify_sig ` are enabled.
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- - This command should provide us with some user-friendly message in the ` definitions_update_fail_reason ` section.
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- - Check if ` offline_definition_update ` and ` offline_definition_update_verify_sig ` are enabled.
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- - Check if ` definitions_update_source_uri ` is equal to ` offline_definition_url_configured ` .
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- - ` definitions_update_source_uri ` is the source from where the signatures were downloaded.
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- - ` offline_definition_url_configured ` is the source from where signatures should be downloaded, the one mentioned in the managed config file.
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+ 3 . Make sure that ` definitions_update_source_uri ` is equal to ` offline_definition_url_configured ` .
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- - Try performing the connectivity test to check if mirror server is reachable from the host:
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+ - ` definitions_update_source_uri ` is the source from where the signatures were downloaded.
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+ - ` offline_definition_url_configured ` is the source from where signatures should be downloaded, the one mentioned in the managed config file.
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- ``` bash
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- mdatp connectivity test
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- ```
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+ 4 . Try performing the connectivity test to check if mirror server is reachable from the host:
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- - Try to trigger a manual update using the following command:
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+ ``` bash
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+ mdatp connectivity test
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+ ```
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+
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+ 5 . Try to initiate a manual update using the following command:
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+
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+ ``` bash
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+ mdatp definitions update
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+ ```
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+
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+ ## See also
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- ``` bash
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- mdatp definitions update
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- ```
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