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Portable/USB saves files to local system

  • The USB/Portable versions 56.0.3051.99 and 57.0.3098.116 (probably earlier versions as well) save several files on the local computer's user profile. If this access is blocked, Opera presents error messages and/or crashes without notice. These files/locations must be allowed within the user profile:
    *\APPDATA\LOCAL\ICONCACHE.DB
    *\APPDATA\LOCAL\MICROSOFT\WINDOWS\CACHES\*
    *\APPDATA\LOCAL\MICROSOFT\WINDOWS\1033\STRUCTUREDQUERYSCHEMA.BIN
    *\APPDATA\LOCAL\TEMP\1\*-*-*-*-*.TMP
    *\APPDATA\LOCAL\TEMP\1\CHROME_BITS_*.CRX
    *\APPDATA\LOCAL\TEMP\1\CHROME_BITS_*.CRX3
    *\APPDATA\LOCAL\TEMP\1\CHROME_BITS_*.CRXD
    *\APPDATA\LOCAL\TEMP\1\*\LICENSE.TXT
    *\APPDATA\LOCAL\TEMP\1\*\MANIFEST.JSON
    *\APPDATA\LOCAL\TEMP\1\*\PRELOADED_DATA.PB
    *\APPDATA\LOCAL\TEMP\1\*\_PLATFORM_SPECIFIC\WIN_X64\WIDEVINECDM.DLL

    Expected result:
    These temporary files should be written to the opera cache directory under:
    *\profile\data

    Running on Windows 10 (multiple versions) using the launcher:
    launcher.exe --disable-update
    opera.exe --disable-update --ran-launcher --started-from-shortcut
    Note: I modified the launcher shortcut to disable auto-updates of Opera, but the files above are still written to the local disk.

  • What about Opera 58, the latest stable one?

  • There are a couple temp dir changes in the 59 changelog. One at least has something to do with a standalone installation. So, you might want to test 59 also.

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