PHP 8.5+ crashes Apache24 on Windows.

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:



1000
0
2
100
0
0x8000000000000000

47873


Application
W



httpd.exe
2.4.66.0
699c17d8
php8ts.dll
8.5.1.0
69428cfc
c0000005
000000000063ef53
0x5bac
0x1dca720b2a158be
C:\Apache24\bin\httpd.exe
C:\php8\php8ts.dll
9aca63ef-8422-4bf3-8792-8051bb6a5838

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
\?\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
\?\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

These files may be available here:
\?\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:



1001
0
4
0
0
0x8000000000000000

47874


Application
W



1889557889876781879
4
APPCRASH
Not available
0
httpd.exe
2.4.66.0
699c17d8
php8ts.dll
8.5.1.0
69428cfc
c0000005
000000000063ef53





\?\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
\?\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
\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.07d5f082-c5a4-4292-a3d7-ad84c74d4431.tmp.xml</Data>
\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_httpd.exe_877c2abc41e41c5ce386679def9b92a1aa7be92_f2d4f317_a0e73607-c394-4302-94a5-35fb32d0513b</Data>


0
9aca63ef-8422-4bf3-8792-8051bb6a5838
268435456
b8958840455afea5da390ee3b8a46b37
0

]

PHP Version

Php versions seem to be 8.5 and up.

Operating System

Windows 11

まず Apache 2.4.66、PHP 8.5.1、Windows 11 でクラッシュを再現し、次に同じセットアップを PHP 8.4.6 と比較します。報告された php8ts.dll のアクセス違反と添付された WER ダンプを、初期のデバッグ証拠として使用します。回帰が切り分けられ、Apache/ PHP の組み合わせでクラッシュしなくなれば完了です。