ARRHelper on Windows 11 crashes on 32-bit Application Pool

[RvdHout]

I have a few old (classic) asp websites on a system located behind a WebFarm on IIS (Application Request Routing)
The application pool for these asp websites runs in 32-bit mode, Classic mode with .NET Runtime version 2.0, as soon as i request such asp website i am presented with: "HTTP Error 503. The service is unavailable." errors.

I have pinned it down to being the ARRHelper extension to be the cause.

I double checked, on Windows 10 and/or Windows Server 2019 using the same application pool settings described above this is not a issue and ARRHelper works in 32-bit and 64-bit mode, as well as for (classic) asp.

In the meantime i have found a workaround to get rid of the "HTTP Error 503. The service is unavailable." errors by editing the ARRHelper settings in applicationHost.config by setting preCondition to "integratedMode", bypassing Classic Mode application pool used for (classic) asp websites.

Toepassingsnaam met fout: w3wp.exe, versie: 10.0.26100.1882, tijdstempel: 0x068bbb3d
Naam van foutmodule: iiscore.dll, versie: 10.0.26100.1742, tijdstempel: 0xacf1ec12
Uitzonderingscode: 0xc0000005
Foutoffset: 0x0000a6ec
Foutproces-id: 0xA50
Begintijd van foutieve toepassing: 0x1DBA6012C91CE5D
Faulting-toepassingspad: C:\WINDOWS\SysWOW64\inetsrv\w3wp.exe
Faulting-modulepad: C:\WINDOWS\system32\inetsrv\iiscore.dll
Rapport-id: 3bb217b6-4ed9-4f7b-852a-8cc50718826d
Faulting-pakket volledige naam: 
Faulting-pakket-relatieve toepassings-id:  

Foutbucket , type 0
Naam van gebeurtenis: APPCRASH
Antwoord: Niet beschikbaar
Id van CAB-bestand: 0

Handtekening van probleem:
P1: w3wp.exe
P2: 10.0.26100.1882
P3: 068bbb3d
P4: iiscore.dll
P5: 10.0.26100.1742
P6: acf1ec12
P7: c0000005
P8: 0000a6ec
P9: 
P10: 

Toegevoegde bestanden:
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.fc3d8fc9-2b53-4ca2-9448-d4e5eef70d37.tmp.mdmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.a80938fa-ce1e-4047-a418-41af03fe281f.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.15c5b4c8-94d2-4263-be33-b5ebae45b812.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.aa361d10-339e-43c7-8f18-c2ec3fe98c73.tmp.txt

Deze bestanden zijn mogelijk hier beschikbaar:
NULL

Analysesymbool: 
Opnieuw zoeken naar oplossing: 0
Rapport-id: 3bb217b6-4ed9-4f7b-852a-8cc50718826d
Rapportstatus: 134217728
Opgedeelde bucket: 
GUID van CAB-bestand: 0