Sandboxie 5.30 (and 5.28) breaks Windows 10 Home 'File Explorer'

[GlobalSettings]

Template=Pdf995
Template=WindowsRasMan
Template=7zipShellEx
Template=WindowsLive
Template=OfficeLicensing

[DefaultBox]

ConfigLevel=7
AutoRecover=y
BlockNetworkFiles=y
Template=qWave
Template=WindowsFontCache
Template=BlockPorts
Template=LingerPrograms
Template=Chrome_Phishing_DirectAccess
Template=Firefox_Phishing_DirectAccess
Template=AutoRecoverIgnore
RecoverFolder=%{374DE290-123F-4565-9164-39C4925E467B}%
RecoverFolder=%Personal%
RecoverFolder=%Favorites%
RecoverFolder=%Desktop%
BorderColor=#00FFFF,ttl
Enabled=y
CopyLimitKb=354306

[UserSettings_086401B8]

SbieCtrl_UserName=boss
SbieCtrl_BoxExpandedView=DefaultBox
SbieCtrl_ShowWelcome=n
SbieCtrl_NextUpdateCheck=1557497824
SbieCtrl_UpdateCheckNotify=n
SbieCtrl_HideWindowNotify=n
SbieCtrl_WindowCoords=302,157,1237,632
SbieCtrl_ActiveView=40021
SbieCtrl_ExplorerNotify=n

[UserSettings_089401BE]

SbieCtrl_UserName=hoss
SbieCtrl_ShowWelcome=n
SbieCtrl_NextUpdateCheck=1557497670
SbieCtrl_UpdateCheckNotify=n
SbieCtrl_HideWindowNotify=n
SbieCtrl_WindowCoords=200,150,1237,632
SbieCtrl_ActiveView=40021
SbieCtrl_ExplorerNotify=n
SbieCtrl_BoxExpandedView=DefaultBox

[UserSettings_081601A4]

SbieCtrl_UserName=bill
SbieCtrl_ShowWelcome=n
SbieCtrl_NextUpdateCheck=1532211104
SbieCtrl_UpdateCheckNotify=n
SbieCtrl_WindowCoords=200,150,1237,632
SbieCtrl_ActiveView=40021

[GlobalSettings]

Template=7zipShellEx
Template=WindowsRasMan
Template=WindowsLive
Template=Pdf995
Template=OfficeLicensing

[DefaultBox]

ConfigLevel=7
AutoRecover=y
BlockNetworkFiles=y
Template=qWave
Template=WindowsFontCache
Template=BlockPorts
Template=LingerPrograms
Template=Chrome_Phishing_DirectAccess
Template=Firefox_Phishing_DirectAccess
Template=AutoRecoverIgnore
RecoverFolder=%{374DE290-123F-4565-9164-39C4925E467B}%
RecoverFolder=%Personal%
RecoverFolder=%Favorites%
RecoverFolder=%Desktop%
BorderColor=#00FFFF,ttl
Enabled=y

[UserSettings_086401B8]

SbieCtrl_UserName=boss
SbieCtrl_BoxExpandedView=DefaultBox
SbieCtrl_NextUpdateCheck=1557505379
SbieCtrl_UpdateCheckNotify=n
SbieCtrl_ShowWelcome=n
SbieCtrl_WindowCoords=200,150,1237,632
SbieCtrl_ActiveView=40021

[UserSettings_089401BE]

SbieCtrl_UserName=hoss
SbieCtrl_ShowWelcome=n
SbieCtrl_NextUpdateCheck=1557506691
SbieCtrl_UpdateCheckNotify=n

1-Sandboxie version: 5.30, Windows version: 10 x64 bit 1809

2- Affected application: Windows File Explorer

3- Antivirus: Windows Defender (latest definitions)

4- Steps to reproduce issue: Log 2 Windows 10 computers onto the LAN. Using one of the computers, open Windows File Explorer to view the user accounts of the other computer on the LAN. From the Admin user account (BOSS), both user accounts (which contain shares) will be shown on the other computer, but when viewed from the Non-Admin user account (HOSS), only the Non-Admin user account will be shown on the other computer. If I uninstall Sandboxie from one computer and use either user account to view the other computer, both user accounts will be shown on the other computer.

5-I have uninstalled Sandboxie v5.30 and its configuration file, then reinstalled it, but doing so made no difference. Attached are the 2 configuration files, the one before and the one after the reinstallation. The user account "BILL" had been removed from the computer long ago, but its presence was still noted in the first config file. Please note that I believe that Microsoft's recent update (KB4495667) may have something to do with this problem because I did not notice the problem occurring before that update.

6- No error messages are displayed.

Hi Lee,

Are you opening the Windows Explorer instances in the Sandbox, or in the host? 

And, can you confirm if unchecking "Block network files" makes a difference?

Right-click on your Sandbox --> Sandbox settings --> Restrictions --> Network Files --> un-check "block network files and folders...." 

Thanks!

I have been opening Windows File Explorer in the Host, not in the Sandbox. After unchecking "Block network files" in the Sandbox settings, I found that doing so did not make a difference. Also opening Windows File Explorer in the Sandbox after unchecking "Block network files" did not resolve the problem.

Hi Lee,

Please provide the exact sharing steps you followed, so I can try to set this up on my test environment. 

Are you sharing using a workgroup, or...? I need specific info. 

Thanks!

I did not create the shares inside a Workgroup. To create the shares in both my Admin and Non-Admin user accounts, I used these steps:

1- Opened Windows File Explorer in the Host, not in the Sandbox

2- Right-clicked on a folder or sub-folder in "This PC"

3- Left-clicked on "Properties"

4- Left-clicked on "Sharing" and noticed that it showed "Not shared"  Also under "Password Protection", it says: "People must have a user account and password for this computer to access shared folders."

5- Left-clicked on "Share"

5- Left-clicked on the down-arrow in the dialog box

6- Left-clicked on "Everyone"

7- Left clicked on "Share"

8- Rebooted the computer

Hi Lee,

I am not able to reproduce this issue. I tested with 2 different computers with Win 10 x64 + Sbie 5.30 installed.

On computer a:

Shared a a folder via an admin account
Shared a folder via the non admin account

Logging to each account (on the same computer) shows the shared folders, and I can see all the users listed (admin and regular). 

On computer b:
Using a non-admin account
I accessed the network, entered the password and was able to see the shared folders from both admin and non admin accounts, as well as the account names under Users. 

If you have any other steps I can follow, please detail them and I'll give it another try. 

Regards,

Hi Lee,

I am not able to reproduce this issue. I tested with 2 different computers with Win 10 x64 + Sbie 5.30 installed.

On computer a:

Shared a a folder via an admin account
Shared a folder via the non admin account

Logging to each account (on the same computer) shows the shared folders, and I can see all the users listed (admin and regular). 

On computer b:
Using a non-admin account
I accessed the network, entered the password and was able to see the shared folders from both admin and non admin accounts, as well as the account names under Users. 

If you have any other steps I can follow, please detail them and I'll give it another try. 

Regards,