Files.ListOpenFiles
-------------------

Queries list of open files from the application.

| Component | Version | macOS | Windows | Linux | Server | iOS SDK |
|---|---|---|---|---|---|---|
| [Files](component_Files.md) | [16.1](newinversion161.md) | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |

MBS( "Files.ListOpenFiles" ) (old name: Files.OpenFiles)

### Parameters

none

### Result

Returns list or error.

### Description

Queries list of open files from the application.  
The list contains file paths for various files like open databases, open font files, various resource files for FileMaker or OS services and of course temporary files.  
### Examples

Try it on macOS:

 MBS ( "Files.ListOpenFiles" )  
<small>  
Example result:   
/private/var/folders/xv/4dhqggss03gc5r26p68b9pgc0000gn/T/FMTEMPFM87249\_1.tmp  
/Users/cs/Library/HTTPStorages/com.filemaker.client.pro12/httpstorages.sqlite  
/System/Library/Extensions/AppleMetalOpenGLRenderer.bundle/Contents/Resources/default.metallib  
/System/Library/Extensions/AppleMetalOpenGLRenderer.bundle/Contents/Resources/PixelConverter.metallib  
/Users/cs/Library/HTTPStorages/com.filemaker.client.pro12/httpstorages.sqlite-wal  
/Users/cs/Library/HTTPStorages/com.filemaker.client.pro12/httpstorages.sqlite-shm  
/Users/cs/Dokumente/todo/Kontakte.fmp12  
/Users/cs/Library/Caches/com.filemaker.client.pro12/Cache.db  
/Users/cs/Library/Caches/com.filemaker.client.pro12/Cache.db-wal  
/Users/cs/Library/Caches/com.filemaker.client.pro12/Cache.db-shm  
/Users/cs/Library/Caches/com.filemaker.client.pro12/Cache.db  
/Users/cs/Library/Caches/com.filemaker.client.pro12/Cache.db-wal  
/System/Library/Frameworks/QuartzCore.framework/Versions/A/Resources/default.metallib  
/private/var/folders/xv/4dhqggss03gc5r26p68b9pgc0000gn/T/FMTEMPFM87249\_2.tmp  
/private/var/folders/xv/4dhqggss03gc5r26p68b9pgc0000gn/C/com.filemaker.client.pro12/com.apple.metal/16777235\_419/functions.data  
/private/var/folders/xv/4dhqggss03gc5r26p68b9pgc0000gn/C/com.filemaker.client.pro12/com.apple.metal/16777235\_419/functions.list</small>Try it on Windows:

 MBS ( "Files.ListOpenFiles" )  
<small>  
Example result:   
C:\\Users\\cs\\Desktop  
C:\\Windows\\WinSxS\\arm64\_microsoft.windows.gdiplus\_6595b64144ccf1df\_1.1.22621.4249\_none\_57fb0e34ce1807ac  
C:\\Windows\\WinSxS\\arm64\_microsoft.windows.common-controls\_6595b64144ccf1df\_6.0.22621.4249\_none\_27101b4f73858dde  
C:\\Windows\\WinSxS\\arm64\_microsoft.windows.common-controls\_6595b64144ccf1df\_6.0.22621.4249\_none\_27101b4f73858dde  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\ba801c41aa4aa1ad2184fabd9e61fcb4\\msvfw32.dll.mui  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\2cbeec04ec887bf07719b55cd4a612fe\\avicap32.dll.mui  
C:\\Windows\\WinSxS\\arm64\_microsoft.windows.common-controls\_6595b64144ccf1df\_6.0.22621.4249\_none\_27101b4f73858dde  
C:\\Windows\\Registration\\R000000000096.clb  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\485da7602720423ef6a2dfbaee24a814\\winnlsres.dll.mui  
C:\\Program Files\\FileMaker\\FileMaker Pro 21\\Interop.dll  
C:\\Windows\\assembly\\pubpol11.dat  
C:\\Program Files\\FileMaker\\FileMaker Pro 21\\WindowsUI.dll  
C:\\Users\\cs\\AppData\\Local\\Temp\\FMTEMPFM1880\_1.tmp  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\f99c3d98393226c5f5bdab070d889cc2\\MMDevAPI.dll.mui  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\81abff1f665315504ea35e9d0912674b\\wdmaud.drv.mui  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\e10743d83c2ea856392c997de53e67ee\\crypt32.dll.mui  
C:\\Program Files (x86)\\Microsoft\\EdgeWebView\\Application\\130.0.2849.68\\icudtl.dat  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\304031d0bca7f617ad53b80a8094cf33\\kernel32.dll.mui  
C:\\Windows\\WinSxS\\arm64\_microsoft.windows.c..-controls.resources\_6595b64144ccf1df\_6.0.22621.1\_de-de\_cdff7507d8bde65c\\comctl32.dll.mui  
C:\\Windows\\apppatch\\DirectXApps.sdb  
C:\\Windows\\WinSxS\\arm64\_microsoft.windows.c..-controls.resources\_6595b64144ccf1df\_6.0.22621.1\_de-de\_cdff7507d8bde65c  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\1c5e81623e4cd50f20550b44d08f78f0\\winhttp.dll.mui  
C:\\Windows\\Fonts\\StaticCache.dat  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\596ef218acccabf1837015c9e3781f93\\mswsock.dll.mui  
C:\\Users\\cs\\Desktop\\HotKeys.fmp12  
C:\\Users\\cs\\AppData\\Local\\Temp\\FMTEMPFM1880\_2.tmp  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\b87a1d41b4e236c3c48d3f62cfb8fc90\\KernelBase.dll.mui  
C:\\Windows\\Fonts\\arial.ttf  
C:\\Windows\\Microsoft.NET\\assembly\\GAC\_MSIL\\System.Numerics\\v4.0\_4.0.0.0\_\_b77a5c561934e089\\System.Numerics.dll  
C:\\Users\\cs\\AppData\\Local\\Temp\\FMTEMPFM1880\_3.tmp  
C:\\Windows\\WinSxS\\arm64\_microsoft.windows.common-controls\_6595b64144ccf1df\_6.0.22621.4249\_none\_27101b4f73858dde  
C:\\Windows\\Fonts\\segoeui.ttf  
C:\\Windows\\Microsoft.NET\\assembly\\GAC\_MSIL\\PresentationFramework-SystemXml\\v4.0\_4.0.0.0\_\_b77a5c561934e089\\PresentationFramework-SystemXml.dll  
C:\\Windows\\Microsoft.NET\\assembly\\GAC\_MSIL\\UIAutomationProvider\\v4.0\_4.0.0.0\_\_31bf3856ad364e35\\UIAutomationProvider.dll  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\a284960c04c9bcd1d23289321f222b5f\\user32.dll.mui  
C:\\Windows\\Microsoft.NET\\assembly\\GAC\_MSIL\\PresentationFramework-SystemData\\v4.0\_4.0.0.0\_\_b77a5c561934e089\\PresentationFramework-SystemData.dll  
C:\\Windows\\Microsoft.NET\\assembly\\GAC\_MSIL\\UIAutomationTypes\\v4.0\_4.0.0.0\_\_31bf3856ad364e35\\UIAutomationTypes.dll  
C:\\Windows\\Microsoft.NET\\assembly\\GAC\_MSIL\\UIAutomationTypes\\v4.0\_4.0.0.0\_\_31bf3856ad364e35\\UIAutomationTypes.dll  
C:\\Windows\\Microsoft.NET\\assembly\\GAC\_MSIL\\UIAutomationProvider\\v4.0\_4.0.0.0\_\_31bf3856ad364e35\\UIAutomationProvider.dll  
C:\\Program Files\\WindowsApps\\Microsoft.LanguageExperiencePackde-DE\_22621.92.340.0\_neutral\_\_8wekyb3d8bbwe\\windows\\System32\\de-DE\\5ecc1c09c2efb710ce837bdcd91c7902\\msctfui.dll.mui  
\\\\Mac\\Home\\Desktop\\Assets.fmp12  
C:\\Windows\\SystemResources\\imageres.dll.mun  
C:\\Windows\\Microsoft.NET\\assembly\\GAC\_MSIL\\PresentationFramework-SystemCore\\v4.0\_4.0.0.0\_\_b77a5c561934e089\\PresentationFramework-SystemCore.dll  
C:\\Program Files\\FileMaker\\FileMaker Pro 21\\en\\WindowsUI.resources.dll</small>Try it on Linux:

 MBS ( "Files.ListOpenFiles" )  
<small>  
Example result:   
/opt/FileMaker/FileMaker Server/Logs/StdOutServerScripting.log  
/opt/FileMaker/FileMaker Server/Logs/StdErrServerScripting.log  
/tmp/FMTEMPFM2864\_1.tmp  
/tmp/FMTEMPFM2864\_3.tmp  
/proc/2864/fd</small>Try it on iOS:

 MBS ( "Files.ListOpenFiles" )  
<small>  
Example result:   
/System/Volumes/Preboot/Cryptexes/OS  
/Users/cs/Library/Developer/CoreSimulator/Devices/C91F13FE-ED38-4403-BBE4-5129ABED7C9C/data/var/run/memory\_warning\_simulation  
/Users/cs/Library/Developer/CoreSimulator/Devices/C91F13FE-ED38-4403-BBE4-5129ABED7C9C/data/Containers/Data/Application/1E6E0B65-C929-4126-8F3D-5BFA89B8A295/tmp/FMTEMPFM89308\_1.tmp  
/Users/cs/Library/Developer/CoreSimulator/Devices/C91F13FE-ED38-4403-BBE4-5129ABED7C9C/data/Containers/Data/Application/1E6E0B65-C929-4126-8F3D-5BFA89B8A295/Documents  
/Users/cs/Library/Developer/CoreSimulator/Devices/C91F13FE-ED38-4403-BBE4-5129ABED7C9C/data/Containers/Data/Application/1E6E0B65-C929-4126-8F3D-5BFA89B8A295/Documents  
/Users/cs/Library/Developer/CoreSimulator/Devices/C91F13FE-ED38-4403-BBE4-5129ABED7C9C/data/Containers/Data/Application/1E6E0B65-C929-4126-8F3D-5BFA89B8A295/Documents/PlaceHolder.fmp12  
/Users/cs/Library/Developer/CoreSimulator/Devices/C91F13FE-ED38-4403-BBE4-5129ABED7C9C/data/Containers/Data/Application/1E6E0B65-C929-4126-8F3D-5BFA89B8A295/tmp/FMTEMPFM89308\_2.tmp</small>### See also

- [Files.CanOpenFile](FilesCanOpenFile.md)
- [Files.List](FilesList.md)

### Release notes

- **Version 16.2**
    - Renamed [Files.OpenFiles](https://www.mbsplugins.eu/FilesListOpenFiles.shtml) to [Files.ListOpenFiles](https://www.mbsplugins.eu/FilesListOpenFiles.shtml).

### Blog Entries

- [MBS FileMaker Plugin, version 16.2pr2](https://www.mbsplugins.de/archive/2026-04-13/MBS_FileMaker_Plugin_version_1/monkeybreadsoftware_blog_filemaker)
- [MBS FileMaker Plugin 16.1 News](https://www.mbsplugins.de/archive/2026-03-31/MBS_FileMaker_Plugin_161_News/monkeybreadsoftware_blog_filemaker)
- [Neues MBS Plugin 16.1 für Claris FileMaker](https://www.mbsplugins.de/archive/2026-03-17/Neues_MBS_Plugin_161_für_Clar/monkeybreadsoftware_blog_filemaker)
- [MBS FileMaker Plugin 16.1 for Claris FileMaker - More than 7800 functions in one plugin](https://www.mbsplugins.de/archive/2026-03-17/MBS_FileMaker_Plugin_161_for_C/monkeybreadsoftware_blog_filemaker)
- [MBS FileMaker Plugin, version 16.1pr1](https://www.mbsplugins.de/archive/2026-02-01/MBS_FileMaker_Plugin_version_1/monkeybreadsoftware_blog_filemaker)

This function checks for a license.

Created 16th January 2026 , last changed 7th April 2026

  
[Files.ListAsJSON](FilesListAsJSON.md) - [Files.ListRecursive](FilesListRecursive.md)

[HTML Version](FilesListOpenFiles.shtml)