Unable to set as default file manager by settings

[FeatherBlaze]

Description

设置中设为默认文件管理器打开后自动关闭。

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Set it to the default settings. File manager automatically closes when opened.

Steps To Reproduce

1. 打开Files。
2. 在设置中设为默认文件管理器。
3. 选项自动恢复关闭状态。

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1. Open Files.
2. Set as default file manager in Settings.
3. Option automatically reverts to the closed state.

Files Version

3.9.1.0

Windows Version

10.0.26100.4652

User ID

e625ea28-65ad-4b28-90bd-f92de47d6a60

Log File

2025-07-15 18:37:00.0940|Information|App launched. Launch args type: LaunchActivatedEventArgs
2025-07-15 18:37:01.3999|Information|Adding cloud provider "OneDrive" mapped to D:\OneDrive
2025-07-15 18:37:01.4553|Information|Drive added: C:, Fixed
2025-07-15 18:37:02.2023|Information|Drive added: D:, Fixed
2025-07-15 18:37:02.2762|Information|Drive added: E:, Fixed
2025-07-15 18:37:04.8684|Information|SIDELOAD: Checking for updates...
2025-07-15 18:37:07.1312|Information|SIDELOAD: Current Package Name: Files
2025-07-15 18:37:07.1333|Information|SIDELOAD: Remote Package Name: Files
2025-07-15 18:37:07.1345|Information|SIDELOAD: Current Version: 3.9.1.0
2025-07-15 18:37:07.1354|Information|SIDELOAD: Remote Version: 3.9.1.0
2025-07-15 18:37:07.1362|Warning|SIDELOAD: Update not found.
2025-07-15 18:37:29.5712|Information|System.ComponentModel.Win32Exception (193): An error occurred trying to start process 'D:\Ghost Downloader_decimal.pyd' with working directory 'C:\WINDOWS\system32'. The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
at Files.App.Utils.Shell.LaunchHelper.<>c__DisplayClass3_0.<b__0>d.MoveNext()
--- End of stack trace from previous ___location ---
at Files.App.Helpers.Win32Helper.<>c__DisplayClass18_0`1.<b__0>d.MoveNext()
2025-07-15 18:47:33.7961|Information|App launched. Launch args type: LaunchActivatedEventArgs
2025-07-15 18:47:34.7685|Information|Adding cloud provider "OneDrive" mapped to D:\OneDrive
2025-07-15 18:47:35.7513|Information|Drive added: C:, Fixed
2025-07-15 18:47:35.9273|Information|Drive added: D:, Fixed
2025-07-15 18:47:36.1827|Information|Drive added: E:, Fixed
2025-07-15 18:47:38.9975|Information|SIDELOAD: Checking for updates...
2025-07-15 18:47:39.9221|Information|SIDELOAD: Current Package Name: Files
2025-07-15 18:47:39.9232|Information|SIDELOAD: Remote Package Name: Files
2025-07-15 18:47:39.9240|Information|SIDELOAD: Current Version: 3.9.1.0
2025-07-15 18:47:39.9247|Information|SIDELOAD: Remote Version: 3.9.1.0
2025-07-15 18:47:39.9254|Warning|SIDELOAD: Update not found.

[Josh65-2201]

Please make sure you have

• UAC (User account control) enabled at 2nd level from the bottom or above
• Restarted Windows

If it doesn't work after you have done that then unfortunately you won't be able to use Files as default unless you reinstall Windows.