Confirm that Smart App Control issued the block
To confirm that Smart App Control issued the block, select Learn more on the block popup and record the named driver, app, or file. If the popup disappears, open Windows Security > Virus & threat protection > Protection history and look for a matching Smart App Controls or Blocked app entry. Compare the time and file name before distinguishing that match from a Defender quarantine or detection, a SmartScreen warning, a missing file, or an ordinary Steam failure.
The Smart App Control status in Windows Security can show whether the feature is active, but that general control is separate and does not replace Learn more or a matching entry. Write down the affected Lootbound file name, time, and exact wording. Stop until the popup or matching entry and the failed launch refer to the same file and time; an unrelated Defender or SmartScreen record belongs to its own workflow.
- Select Learn more on the Smart App Control block popup and record the named component.
- If the popup is gone, open Windows Security, choose Virus & threat protection, and open Protection history.
- Look specifically for a matching Smart App Controls or Blocked app entry.
- Match the time and file identity, then separate that entry from Defender quarantine, detection, and SmartScreen events.
- Check the general Smart App Control status separately only to see whether the feature is active.
- Continue only with the workflow for the control actually named.
Update Windows, Defender, Steam, and Lootbound first
Install trusted updates for Windows, Defender security intelligence, Steam, and Lootbound through their normal update controls. The current Lootbound baseline is version 1.1.7 with the August 21 update. Let each update finish before opening the next application so an incomplete update is not mistaken for a security decision.
Restart Windows once after the updates complete, then reproduce the launch a single time. Use Learn more on the popup, or the matching Protection history entry if the popup disappears, to compare the file and time with the details already recorded. A changed or absent block is useful evidence, while an identical match confirms that the trusted update pass did not alter the result. Keep every later test to one variable.
- Finish Windows Update and current Defender intelligence updates.
- Allow Steam and Lootbound to reach their current versions.
- Restart once, launch once, and inspect the resulting event.
Verify the owned Steam installation
Use Steam to verify the installed files in the owned Lootbound installation and wait for the result. This compares the local game files with the copy delivered through Steam and can restore a file that is incomplete or damaged. Verification does not promise that Smart App Control will accept the executable, but it establishes a clean installed baseline before any broad system decision.
Never download an executable from elsewhere. If Steam replaces a file, restart Steam and try one launch, then use Learn more or the matching Protection history entry to inspect the blocked component. If no file changes, record that result. Reinstalling repeatedly is not a better comparison than a completed verification because several attempts at once make it harder to identify what actually changed.
- Open Lootbound's installed-file controls in Steam.
- Run verification and wait for the final result.
- Launch once from the owned Steam library.
- Compare the new block details with the original event.
Smart App Control has no per-app bypass
Smart App Control has no per-app bypass for an individual app while leaving that control applied to everything else. An antivirus exclusion is not the same control and does not create an exception inside Smart App Control. Treat the exact Windows message as the authority for which control made the decision instead of mixing unrelated security settings.
When the current Steam copy remains blocked after trusted updates and file verification, report the installed file identity and block details to the developer or platform support. A corrected signature or trusted delivery update preserves the security boundary for everyone and is a better route than trusting a third-party binary. Keep the owned installation unchanged while the file identity is being reviewed.
Keep disabling protection as the last informed choice
Disabling Smart App Control is a last resort, not an opening repair step. It changes a broad system-level security control for more than Lootbound, so make that decision only after confirming the named control, applying trusted updates, restarting, verifying the owned Steam files, and recording the repeated block. The choice removes a protection boundary; it does not establish that the game file was harmless or repaired.
Do not treat the control as a temporary exception for Lootbound. Because there is no per-app bypass, turning it off changes how Windows evaluates other applications too. Read the consequence shown in Windows Security on that device before deciding, and leave protection enabled while the installed file is under review if the broader tradeoff is unacceptable. No troubleshooting result on this page requires a security setting to be changed.
Recent Windows updates can allow Smart App Control to be enabled again in Windows Security without a clean install where the feature is available. That option does not narrow the system-wide impact, so changing the control remains a final resort after the trusted checks.
Report the exact file and block details when the issue remains
If the verified current installation remains blocked, capture the Windows version, exact control name, complete block message, event time, Lootbound version, and Steam verification result. Record the installed file name and identity shown by Windows, but remove the personal account name and private folder portions from any path before sharing the report.
Send the concise record to the developer or platform support and state whether the event repeats after a restart. Keep the original Windows Security entry available for follow-up and avoid altering the installed file while it is being checked. This gives support a reproducible case tied to the owned Steam copy and keeps the next action focused on delivery or signing instead of weakening unrelated protections.
- Windows version and exact control name
- Complete block wording and event time
- Lootbound version and Steam verification result
- Installed file identity with personal path details removed
- Result of one launch after the update and restart