Windows 11 program fails to start

[Falcon911]

• I confirm that this is an issue rather than a question.

Bug report

Application immediately closes without error
Was working fine last week
Only thing that was installed was

Cumulative Update for Windows 11 Insider Preview (KB5064093) (26200.5761)

Steps to reproduce

Start the hyperiond.exe
Icon stays on in the system tray for about 2 seconds before disappearing

What is expected?

Application starts

What is actually happening?

Windows Event viewer states
Log Name: Application
Source: Application Error
Date: 9/2/2025 6:46:20 PM
Event ID: 1000
Task Category: Application Crashing Events
Level: Error
Keywords:
Description:
Faulting application name: hyperiond.exe, version: 2.1.2.0, time stamp: 0x68acff1b
Faulting module name: ucrtbase.dll, version: 10.0.26100.5770, time stamp: 0x5fe4dacb
Exception code: 0xc0000409
Fault offset: 0x00000000000a4ace
Faulting process id: 0x456C
Faulting application start time: 0x1DC1C5B6566A3DA
Faulting application path: C:\Program Files\Hyperion\bin\hyperiond.exe
Faulting module path: C:\WINDOWS\System32\ucrtbase.dll
Report Id: 38661b62-db70-4621-afc2-9788cd65f01a
Faulting package full name:
Faulting package-relative application ID:
Event Xml:



1000
0
2
100
0
0x8000000000000000

1339


Application
Dans-PC



hyperiond.exe
2.1.2.0
68acff1b
ucrtbase.dll
10.0.26100.5770
5fe4dacb
c0000409
00000000000a4ace
0x456c
0x1dc1c5b6566a3da
C:\Program Files\Hyperion\bin\hyperiond.exe
C:\WINDOWS\System32\ucrtbase.dll
38661b62-db70-4621-afc2-9788cd65f01a

System

Windows 11 Pro
Version 10.0.26220 Build 26220

Never eve get that far to produce this report.

Tried both 2.1.1 and 2.1.2 nightly build. Same issue.

[UniquePants]

just wanted to confirm: same issue here - but only with the non-nightly build. nightly works perfectly so far :)
i really love to finally use my home assistant lights with hyperion and was therefore really looking forward to this release <3