Turn Windows features on or off

I'm a paying customer and I'd like to install/uninstall Windows features via "optionalfeatures".
Yet it seems to fail, so can you help out?

Steps to reproduce:

1. Run optionalfeatures (both with or without admin rights).
2. Select or unselect a Windows feature (I tried Legacy Components=>DirectPlay but then completely other choices as well).
3. Click OK.

Expected result:

• A success message.

What happens instead:

1. Sandboxie crashes with:
   SBIE2205 Service not implemented: TrustedInstaller E06D7363
   SBIE2205 Service not implemented: TrustedInstaller E06D7363
   (yes, the same message twice in one pop up).
2. I choose to close the error and then instead there's:
   SBIE2205 Service not implemented: TrustedInstaller C000003A
3. I choose to close the error and Windows features displays its own error that the feature installation failed due to:
   The system cannot find the path specified.
   Error code: 0x80070003

Specs:

1. Sandboxie v5.30 (default settings).
2. Windows 10 x64 bit 1809.

Screenshots (the forum seems to shrink them unless clicked):

Here's what Resource Access Monitor mentioned:

(Drive) \Device\HarddiskVolume10
(Drive) \Device\HarddiskVolume5
(Drive) \Device\HarddiskVolume7
Clsid -------------------------------
Clsid {0B5A2C52-3EB9-470A-96E2-6C6D4570E40F} VssSnapshotMgmt Class
Clsid {E579AB5F-1CC4-44B4-BED9-DE0991FF0623} VSSCoordinator Class
Clsid {F5078F32-C551-11D3-89B9-0000F81FE221} XML DOM Document 3.0
Clsid unknown
File/Key -------------------------------
Image -------------------------------
Ipc -------------------------------
Ipc \BaseNamedObjects\[CoreUI]-PID(8944)-TID(9244) 3cf00e59-91ea-4f4a-bcdd-7288f65e4d5c
Ipc \BaseNamedObjects\__ComCatalogCache__
Ipc \RPC Control\epmapper
Ipc \RPC Control\keysvc
Ipc \RPC Control\LRPC-2e518bbdbec3662b74
Ipc \RPC Control\OLE637507862572789BAB8CE4E08F1C
Ipc \Sessions\1\BaseNamedObjects\__ComCatalogCache__
Ipc \Sessions\1\BaseNamedObjects\01a2ef50-4aae-43c4-a073-18f317dc8941
Ipc \Sessions\1\BaseNamedObjects\1ImmersiveFocusTrackingActiveEvent
Ipc \Sessions\1\BaseNamedObjects\a6d60936-636f-4753-bebd-89f547c4438a
Ipc \Sessions\1\BaseNamedObjects\CONFIRM_DOWNLOAD_EVENT
Ipc \Sessions\1\BaseNamedObjects\SBIE_BOXED_DummyEvent_15116
Ipc \Sessions\1\BaseNamedObjects\SBIE_BOXED_DummyEvent_17272
Ipc \Sessions\1\BaseNamedObjects\SBIE_BOXED_DummyEvent_9620
Ipc \Sessions\1\BaseNamedObjects\SBIE_BOXED_ServiceCrypto_Mutex1
Ipc \Sessions\1\BaseNamedObjects\SBIE_BOXED_ServiceInitComplete_cryptsvc
Ipc \Sessions\1\BaseNamedObjects\SBIE_BOXED_ServiceInitComplete_DcomLaunch
Ipc \Sessions\1\BaseNamedObjects\SBIE_BOXED_ServiceInitComplete_RpcSs
Ipc \Sessions\1\BaseNamedObjects\SboxSession
Ipc \Sessions\1\BaseNamedObjects\SM0:14448:304:WilStaging_02
Ipc \Sessions\1\BaseNamedObjects\SM0:14448:304:WilStaging_02_p0
Ipc \Sessions\1\BaseNamedObjects\SM0:14448:304:WilStaging_02_p0h
Ipc \Sessions\1\BaseNamedObjects\SM0:15116:120:WilError_02
Ipc \Sessions\1\BaseNamedObjects\SM0:15116:120:WilError_02_p0
Ipc \Sessions\1\BaseNamedObjects\SM0:15116:120:WilError_02_p0h
Ipc \Sessions\1\BaseNamedObjects\SM0:15116:304:WilStaging_02
Ipc \Sessions\1\BaseNamedObjects\SM0:15116:304:WilStaging_02_p0
Ipc \Sessions\1\BaseNamedObjects\SM0:15116:304:WilStaging_02_p0h
Ipc \Sessions\1\BaseNamedObjects\SM0:17272:304:WilStaging_02
Ipc \Sessions\1\BaseNamedObjects\SM0:17272:304:WilStaging_02_p0
Ipc \Sessions\1\BaseNamedObjects\SM0:17272:304:WilStaging_02_p0h
Ipc \Sessions\1\BaseNamedObjects\SM0:9620:120:WilError_02
Ipc \Sessions\1\BaseNamedObjects\SM0:9620:120:WilError_02_p0
Ipc \Sessions\1\BaseNamedObjects\SM0:9620:120:WilError_02_p0h
Ipc \Sessions\1\BaseNamedObjects\SM0:9620:304:WilStaging_02
Ipc \Sessions\1\BaseNamedObjects\SM0:9620:304:WilStaging_02_p0
Ipc \Sessions\1\BaseNamedObjects\SM0:9620:304:WilStaging_02_p0h
Ipc \Sessions\1\BaseNamedObjects\windows_shell_global_counters
Ipc \WindowsErrorReportingServicePort
Ipc O \KernelObjects\LowMemoryCondition
Ipc O \KernelObjects\MaximumCommitCondition
Ipc O \KernelObjects\MemoryErrors
Ipc O \KernelObjects\SystemErrorPortReady
Ipc O \KnownDlls\advapi32.dll
Ipc O \KnownDlls\bcrypt.dll
Ipc O \KnownDlls\bcryptPrimitives.dll
Ipc O \KnownDlls\cfgmgr32.dll
Ipc O \KnownDlls\clbcatq.dll
Ipc O \KnownDlls\combase.dll
Ipc O \KnownDlls\CRYPT32.dll
Ipc O \KnownDlls\cryptsp.dll
Ipc O \KnownDlls\gdi32.dll
Ipc O \KnownDlls\gdi32full.dll
Ipc O \KnownDlls\IMM32.dll
Ipc O \KnownDlls\kernel.appcore.dll
Ipc O \KnownDlls\kernel32.dll
Ipc O \KnownDlls\kernelbase.dll
Ipc O \KnownDlls\MSASN1.dll
Ipc O \KnownDlls\msvcp_win.dll
Ipc O \KnownDlls\MSVCRT.dll
Ipc O \KnownDlls\ole32.dll
Ipc O \KnownDlls\OLEAUT32.dll
Ipc O \KnownDlls\powrprof.dll
Ipc O \KnownDlls\profapi.dll
Ipc O \KnownDlls\PSAPI.DLL
Ipc O \KnownDlls\rpcrt4.dll
Ipc O \KnownDlls\sechost.dll
Ipc O \KnownDlls\SHCORE.dll
Ipc O \KnownDlls\SHELL32.dll
Ipc O \KnownDlls\SHLWAPI.dll
Ipc O \KnownDlls\ucrtbase.dll
Ipc O \KnownDlls\user32.dll
Ipc O \KnownDlls\win32u.dll
Ipc O \KnownDlls\windows.storage.dll
Ipc O \KnownDlls\WS2_32.dll
Ipc O \RPC Control\lsapolicylookup
Ipc O \RPC Control\samss lpc
Ipc O \RPC Control\SbieSvcPort
Ipc O \Sessions\1\BaseNamedObjects\DBWinMutex
Ipc O \Sessions\1\Windows\ApiPort
Ipc O \Sessions\1\Windows\DwmApiPort
Ipc O \Sessions\1\Windows\SharedSection
Ipc O \ThemeApiPort
Pipe -------------------------------
Pipe ?
Pipe \Device\CNG
Pipe \Device\Harddisk0\DR0
Pipe \Device\HarddiskVolume5
Pipe \Device\KsecDD
Pipe \Device\MountPointManager
Pipe \device\namedpipe\lsarpc
WinCls -------------------------------