Steam will not run in sandboxie

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Moderator: Barb@Invincea

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Steam will not run in sandboxie

Post by 2newfiedad » Sun Oct 15, 2017 8:10 am

have windows 10 installed
latest version of Sandboxie (5.20)
latest version of Steam (1507158695)
latest version of Norton (

Since last windows update (last week) steam will not run in sandboxie (have 2 steam accounts), as soon as i try to run steam in sandboxie i get
Windows - application error
The exception breakpoint
A breakpoint has been reached
(0x80000003) occurred in the application at location

then i am forced to close steam

can you help

Sandboxie Support
Sandboxie Support
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Joined: Mon Nov 07, 2016 3:10 pm

Re: Steam will not run in sandboxie

Post by Barb@Invincea » Mon Oct 16, 2017 11:45 am

Hello 2newfiedad,

Does Steam work fine outside Sandboxie? Make sure it is fully updated on the hos, then delete the contents of your Sandbox and re-try launching it.
Does the issue occur in a new Sandbox with default settings?
Are you using any security programs? (Antivirus, firewall, etc...)

Please try the latest beta:


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