Microsoft Defender for Endpoint

Troubleshoot Service Startup Problems

4 September 2026Doc update+0 / −1 lines

In brief

The article no longer includes the entry showing the default ProductAppDataPath and its Windows Defender registry location.

What Defender admins need to know

Administrators using the article to troubleshoot service startup issues will no longer find this path reference there.

Summaries are generated from the documentation change itself.

Documentation change

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|HKLM\SOFTWARE\Microsoft\Windows Defender\Diagnostics\RolledbackPlatformHealthData = <OVERALL>:<BAD>, <AGE>:<36>, <DIRTY_SHUTDOWNS>:<22>|Default\Diagnostics\RolledbackPlatformHealthData = 0| |Default\ServiceStartStates = 0x0|HKLM\SOFTWARE\Microsoft\Windows Defender\ServiceStartStates = 0x1| |HKLM\SOFTWARE\Microsoft\Windows Defender\ServiceStartStates = 0x1|Default\ServiceStartStates = 0x0| |Default\ProductAppDataPath = C:\ProgramData\Microsoft\Windows Defender|HKLM\SOFTWARE\Microsoft\Windows Defender\ProductAppDataPath = C:\ProgramData\Microsoft\Windows Defender~~| |~~Default\IsServiceRunning = 0x0|HKLM\SOFTWARE\Microsoft\Windows Defender\IsServiceRunning = 0x1| |Default\ProductAppDataPath = C:\ProgramData\Microsoft\Windows Defender|HKLM\SOFTWARE\Microsoft\Windows Defender\ProductAppDataPath = C:\ProgramData\Microsoft\Windows Defender| |Default\IsServiceRunning = 0x0|HKLM\SOFTWARE\Microsoft\Windows Defender\IsServiceRunning = 0x1|

@@ -52,7 +52,6 @@ The configuration of Microsoft Defender Antivirus changed. If you expected this |`HKLM\SOFTWARE\Microsoft\Windows Defender\Diagnostics\RolledbackPlatformHealthData = <OVERALL>:<BAD>, <AGE>:<36>, <DIRTY_SHUTDOWNS>:<22>`|`Default\Diagnostics\RolledbackPlatformHealthData = 0`| |`Default\ServiceStartStates = 0x0`|`HKLM\SOFTWARE\Microsoft\Windows Defender\ServiceStartStates = 0x1`| |`HKLM\SOFTWARE\Microsoft\Windows Defender\ServiceStartStates = 0x1`|`Default\ServiceStartStates = 0x0`|-|`Default\ProductAppDataPath = C:\ProgramData\Microsoft\Windows Defender`|`HKLM\SOFTWARE\Microsoft\Windows Defender\ProductAppDataPath = C:\ProgramData\Microsoft\Windows Defender`| |`Default\IsServiceRunning = 0x0`|`HKLM\SOFTWARE\Microsoft\Windows Defender\IsServiceRunning = 0x1`| |`Default\ProductAppDataPath = C:\ProgramData\Microsoft\Windows Defender`|`HKLM\SOFTWARE\Microsoft\Windows Defender\ProductAppDataPath = C:\ProgramData\Microsoft\Windows Defender`| |`Default\IsServiceRunning = 0x0`|`HKLM\SOFTWARE\Microsoft\Windows Defender\IsServiceRunning = 0x1`|