[php-src] Issue #21303: PHP 8.5+ crashes Apache24 on Windows.

[email protected] (tmabell)
Newsgroups php.bugs
Message-ID <aEx2G0abDEvilWVqV3kthh7rAce18gUZodg1L7fJ1pE@main.internal.php.net> 
Issue: https://github.com/php/php-src/issues/21303
Author: tmabell

### Description

Apache frequently crashes with these errors both from the Apache error log and WER:

I can confirm that reverting the php version from 8.5+ back to 8.4.6 clears the issue completely. 

This is the error log, both from Apache and Windows WER:

[Wed Feb 25 19:21:01.729542 2026] [mpm_winnt:notice] [pid 13388:tid 436] AH00428: Parent: child process 10804 exited with status 3221225477 -- Restarting.]

This is recorded in WER:

[Log Name: Application
Source: Application Error
Date: 2/26/2026 8:06:30 AM
Event ID: 1000
Task Category: Application Crashing Events
Level: Error
Keywords:
User: SYSTEM
Computer: W
Description:
Faulting application name: httpd.exe, version: 2.4.66.0, time stamp: 0x699c17d8
Faulting module name: php8ts.dll, version: 8.5.1.0, time stamp: 0x69428cfc
Exception code: 0xc0000005
Fault offset: 0x000000000063ef53
Faulting process id: 0x5BAC
Faulting application start time: 0x1DCA720B2A158BE
Faulting application path: C:\Apache24\bin\httpd.exe
Faulting module path: C:\php8\php8ts.dll
Report Id: 9aca63ef-8422-4bf3-8792-8051bb6a5838
Faulting package full name:
Faulting package-relative application ID:
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Application Error" Guid="{a0e9b465-b939-57d7-b27d-95d8e925ff57}" />
<EventID>1000</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>100</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2026-02-26T13:06:30.7707534Z" />
<EventRecordID>47873</EventRecordID>
<Correlation />
<Execution ProcessID="20380" ThreadID="18156" />
<Channel>Application</Channel>
<Computer>W</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="AppName">httpd.exe</Data>
<Data Name="AppVersion">2.4.66.0</Data>
<Data Name="AppTimeStamp">699c17d8</Data>
<Data Name="ModuleName">php8ts.dll</Data>
<Data Name="ModuleVersion">8.5.1.0</Data>
<Data Name="ModuleTimeStamp">69428cfc</Data>
<Data Name="ExceptionCode">c0000005</Data>
<Data Name="FaultingOffset">000000000063ef53</Data>
<Data Name="ProcessId">0x5bac</Data>
<Data Name="ProcessCreationTime">0x1dca720b2a158be</Data>
<Data Name="AppPath">C:\Apache24\bin\httpd.exe</Data>
<Data Name="ModulePath">C:\php8\php8ts.dll</Data>
<Data Name="IntegratorReportId">9aca63ef-8422-4bf3-8792-8051bb6a5838</Data>
<Data Name="PackageFullName">
</Data>
<Data Name="PackageRelativeAppId">
</Data>
</EventData>
</Event>

Log Name: Application
Source: Windows Error Reporting
Date: 2/26/2026 8:06:32 AM
Event ID: 1001
Task Category: None
Level: Information
Keywords:
User: SYSTEM
Computer: W
Description:
Fault bucket 1889557889876781879, type 4
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: httpd.exe
P2: 2.4.66.0
P3: 699c17d8
P4: php8ts.dll
P5: 8.5.1.0
P6: 69428cfc
P7: c0000005
P8: 000000000063ef53
P9:
P10:

Attached files:
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.ed7320af-34de-475c-918d-946f50c2c560.tmp.dmp](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.ed7320af-34de-475c-918d-946f50c2c560.tmp.dmp)
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.c39c1aa3-ec88-473e-80c2-f35f15076dde.tmp.WERInternalMetadata.xml](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.c39c1aa3-ec88-473e-80c2-f35f15076dde.tmp.WERInternalMetadata.xml)
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.0823bf4e-c11e-43fb-8697-adead3ee30a0.tmp.csv](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.0823bf4e-c11e-43fb-8697-adead3ee30a0.tmp.csv)
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.e7eff814-f284-4032-be99-485c9dd6b0c6.tmp.txt](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.e7eff814-f284-4032-be99-485c9dd6b0c6.tmp.txt)
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.07d5f082-c5a4-4292-a3d7-ad84c74d4431.tmp.xml](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.07d5f082-c5a4-4292-a3d7-ad84c74d4431.tmp.xml)

These files may be available here:
[\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_httpd.exe_877c2abc41e41c5ce386679def9b92a1aa7be92_f2d4f317_a0e73607-c394-4302-94a5-35fb32d0513b](file://%3f/C:/ProgramData/Microsoft/Windows/WER/ReportArchive/AppCrash_httpd.exe_877c2abc41e41c5ce386679def9b92a1aa7be92_f2d4f317_a0e73607-c394-4302-94a5-35fb32d0513b)

Analysis symbol:
Rechecking for solution: 0
Report Id: 9aca63ef-8422-4bf3-8792-8051bb6a5838
Report Status: 268435456
Hashed bucket: b8958840455afea5da390ee3b8a46b37
Cab Guid: 0
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Windows Error Reporting" Guid="{0ead09bd-2157-539a-8d6d-c87f95b64d70}" />
<EventID>1001</EventID>
<Version>0</Version>
<Level>4</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2026-02-26T13:06:32.0834946Z" />
<EventRecordID>47874</EventRecordID>
<Correlation />
<Execution ProcessID="20380" ThreadID="18156" />
<Channel>Application</Channel>
<Computer>W</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="Bucket">1889557889876781879</Data>
<Data Name="BucketType">4</Data>
<Data Name="EventName">APPCRASH</Data>
<Data Name="Response">Not available</Data>
<Data Name="CabId">0</Data>
<Data Name="P1">httpd.exe</Data>
<Data Name="P2">2.4.66.0</Data>
<Data Name="P3">699c17d8</Data>
<Data Name="P4">php8ts.dll</Data>
<Data Name="P5">8.5.1.0</Data>
<Data Name="P6">69428cfc</Data>
<Data Name="P7">c0000005</Data>
<Data Name="P8">000000000063ef53</Data>
<Data Name="P9">
</Data>
<Data Name="P10">
</Data>
<Data Name="AttachedFiles">
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.ed7320af-34de-475c-918d-946f50c2c560.tmp.dmp](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.ed7320af-34de-475c-918d-946f50c2c560.tmp.dmp)
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.c39c1aa3-ec88-473e-80c2-f35f15076dde.tmp.WERInternalMetadata.xml](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.c39c1aa3-ec88-473e-80c2-f35f15076dde.tmp.WERInternalMetadata.xml)
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.0823bf4e-c11e-43fb-8697-adead3ee30a0.tmp.csv](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.0823bf4e-c11e-43fb-8697-adead3ee30a0.tmp.csv)
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.e7eff814-f284-4032-be99-485c9dd6b0c6.tmp.txt](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.e7eff814-f284-4032-be99-485c9dd6b0c6.tmp.txt)
[\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.07d5f082-c5a4-4292-a3d7-ad84c74d4431.tmp.xml</Data](file://%3f/C:/ProgramData/Microsoft/Windows/WER/Temp/WER.07d5f082-c5a4-4292-a3d7-ad84c74d4431.tmp.xml%3c/Data)>
<Data Name="StorePath">[\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_httpd.exe_877c2abc41e41c5ce386679def9b92a1aa7be92_f2d4f317_a0e73607-c394-4302-94a5-35fb32d0513b</Data](file://%3f/C:/ProgramData/Microsoft/Windows/WER/ReportArchive/AppCrash_httpd.exe_877c2abc41e41c5ce386679def9b92a1aa7be92_f2d4f317_a0e73607-c394-4302-94a5-35fb32d0513b%3c/Data)>
<Data Name="AnalysisSymbol">
</Data>
<Data Name="Rechecking">0</Data>
<Data Name="ReportId">9aca63ef-8422-4bf3-8792-8051bb6a5838</Data>
<Data Name="ReportStatus">268435456</Data>
<Data Name="HashedBucket">b8958840455afea5da390ee3b8a46b37</Data>
<Data Name="CabGuid">0</Data>
</EventData>
</Event>]

### PHP Version

```plain
Php versions seem to be 8.5 and up.
```

### Operating System

Windows 11
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