Bug 1681745 Comment 0 Edit History

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Original comment by
on 
Crash report: https://crash-stats.mozilla.org/report/index/74d718ab-c6a3-4599-b769-9bd7c0201210

MOZ_CRASH Reason: ```LoadSheetSync failed with error 80520012 loading built-in stylesheet 'chrome://global/content/xul.css'```

Top 10 frames of crashing thread:
```
0 xul.dll mozilla::ErrorLoadingSheet layout/style/GlobalStyleSheetCache.cpp:530
1 xul.dll mozilla::GlobalStyleSheetCache::LoadSheet layout/style/GlobalStyleSheetCache.cpp:565
2 xul.dll mozilla::GlobalStyleSheetCache::LoadSheetURL layout/style/GlobalStyleSheetCache.cpp:510
3 xul.dll mozilla::GlobalStyleSheetCache::XULSheet layout/style/UserAgentStyleSheetList.h:40
4 xul.dll mozilla::GlobalStyleSheetCache::GlobalStyleSheetCache layout/style/GlobalStyleSheetCache.cpp:239
5 xul.dll static mozilla::GlobalStyleSheetCache::Singleton layout/style/GlobalStyleSheetCache.cpp:460
6 xul.dll mozilla::dom::Document::FillStyleSetUserAndUASheets dom/base/Document.cpp:2766
7 xul.dll mozilla::dom::Document::CreatePresShell dom/base/Document.cpp:6150
8 xul.dll nsDocumentViewer::InitPresentationStuff layout/base/nsDocumentViewer.cpp:768
9 xul.dll nsDocumentViewer::InitInternal layout/base/nsDocumentViewer.cpp:974
```
I've encountered this startup crash several times on Windows 10 x64, using Firefox 78.6.0 ESR, latest Nightly 85.0a1 and Firefox 84 RC. 

I've tested on machines with Cisco AMP for Endpoints (7.2.11.11804) and this antivirus seems to detect the omni.ja file as a corrupt file and blocks it. 

On machines with other antiviruses (Bitdefender, Windows Defender), everything looks good and no crash occur. 

**Suggested severity: S1**
Revision 1 by
on 
Crash report: https://crash-stats.mozilla.org/report/index/74d718ab-c6a3-4599-b769-9bd7c0201210

MOZ_CRASH Reason: ```LoadSheetSync failed with error 80520012 loading built-in stylesheet 'chrome://global/content/xul.css'```

Top 10 frames of crashing thread:
```
0 xul.dll mozilla::ErrorLoadingSheet layout/style/GlobalStyleSheetCache.cpp:530
1 xul.dll mozilla::GlobalStyleSheetCache::LoadSheet layout/style/GlobalStyleSheetCache.cpp:565
2 xul.dll mozilla::GlobalStyleSheetCache::LoadSheetURL layout/style/GlobalStyleSheetCache.cpp:510
3 xul.dll mozilla::GlobalStyleSheetCache::XULSheet layout/style/UserAgentStyleSheetList.h:40
4 xul.dll mozilla::GlobalStyleSheetCache::GlobalStyleSheetCache layout/style/GlobalStyleSheetCache.cpp:239
5 xul.dll static mozilla::GlobalStyleSheetCache::Singleton layout/style/GlobalStyleSheetCache.cpp:460
6 xul.dll mozilla::dom::Document::FillStyleSetUserAndUASheets dom/base/Document.cpp:2766
7 xul.dll mozilla::dom::Document::CreatePresShell dom/base/Document.cpp:6150
8 xul.dll nsDocumentViewer::InitPresentationStuff layout/base/nsDocumentViewer.cpp:768
9 xul.dll nsDocumentViewer::InitInternal layout/base/nsDocumentViewer.cpp:974
```
I've encountered this startup crash several times on Windows 10 x64, using Firefox 78.6.0 ESR, latest Nightly 85.0a1 and Firefox 84 RC. 

I've tested on machines with Cisco AMP for Endpoints (7.2.11.11804) - our default antivirus on Softvision machines, and this antivirus seems to detect the omni.ja file as a corrupt file and blocks it. 

On machines with other antiviruses (Bitdefender, Windows Defender), everything looks good and no crash occur. 

**Suggested severity: S1**

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