Cannot update firefox as non-admin user on windows XP.

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ŋdi ga 6:12 3/14/16

Windows XP SP3, user without admin privileges. FF version 44. Update (firefox => About => restart to complete update") to version 45 fails,

the update.log contains PATCH DIRECTORY C:\Documents and Settings\nauczyciel\Ustawienia lokalne\Dane aplikacji\Mozilla\Firefox\Mozilla Firefox\updates\0a INSTALLATION DIRECTORY C:\Program Files\Mozilla Firefox WORKING DIRECTORY C:\Program Files\Mozilla Firefox NS_main: callback app file open attempt 1 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 2 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 3 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 4 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 5 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 6 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 7 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 8 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 9 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 10 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file in use, failed to exclusively open executable file: C:\Program Files\Mozilla Firefox\firefox.exe

I run the procmon.exe (from sysinternals suite) while the updater.exe executed and I see exactly 10 events, the updater.exe is getting access denied (5) when trying to access the firefox.exe.

But I do have marked "[x] use background service to update fireox" in firefox settings and expected update to perform by mozilla maintenance service (SYSTEM user). THe procmon.exe properties on "access denied" to firefox.exe event show that the updater.exe is running as 'non-admin' user and not as SYSTEM user, which I would expect from update being executed by mozilla maintenance service.

So the question is, why is update security context 'non- admin' user and not SYSTEM ?

Starting firefox as admin user works, the update completes successfully.

Windows XP SP3, user without admin privileges. FF version 44. Update (firefox => About => restart to complete update") to version 45 fails, the update.log contains PATCH DIRECTORY C:\Documents and Settings\nauczyciel\Ustawienia lokalne\Dane aplikacji\Mozilla\Firefox\Mozilla Firefox\updates\0a INSTALLATION DIRECTORY C:\Program Files\Mozilla Firefox WORKING DIRECTORY C:\Program Files\Mozilla Firefox NS_main: callback app file open attempt 1 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 2 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 3 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 4 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 5 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 6 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 7 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 8 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 9 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file open attempt 10 failed. File: C:\Program Files\Mozilla Firefox\firefox.exe. Last error: 5 NS_main: callback app file in use, failed to exclusively open executable file: C:\Program Files\Mozilla Firefox\firefox.exe I run the procmon.exe (from sysinternals suite) while the updater.exe executed and I see exactly 10 events, the updater.exe is getting access denied (5) when trying to access the firefox.exe. But I do have marked "[x] use background service to update fireox" in firefox settings and expected update to perform by mozilla maintenance service (SYSTEM user). THe procmon.exe properties on "access denied" to firefox.exe event show that the updater.exe is running as 'non-admin' user and not as SYSTEM user, which I would expect from update being executed by mozilla maintenance service. So the question is, why is update security context 'non- admin' user and not SYSTEM ? Starting firefox as admin user works, the update completes successfully.