My MS apps crash all the time on my Mac Sequoia v15.7.1

Question

I've had MS apps on my Mac for years, now they crach all the time. Only once have I had a crash report, the rest of the time the apps just close.

Here's the first part or the crash report:

Microsoft Error Reporting log version: 2.0

Error Signature:

Exception: EXC_CRASH (SIGHUP)

ExceptionEnumString: 34603008

Exception Code: 0x00000001 (0x0000000000000000)

Date/Time: 2025-11-02 16:22:26 +0000

Application Name: Microsoft Excel

Application Bundle ID: com.microsoft.Excel

Application Signature: XCEL

Application Bitness: x64

Application Version: 16.100.1.25081721

Crashed Module Name: merp

Crashed Module Version: 16.100.25081721

Crashed Module Offset: 0x000000000000dc18

Blame Module Name: Microsoft Excel

Blame Module Version: 16.100.25081721

UnsymbolicatedChecksum: 7468AD61A279BBB93F65E9EA46AA1830

Blame Module Offset: 0x00000000012218c8

StackHash: 56f9761825a13ede_34603008_main_ufq

Application LCID: 2057

Extra app info: Reg=en Loc=0x0809

Build Type: Release

Crashed thread Stack Pointer: 0x_000000016fd83bc0

Crashed thread: 0

Thread 0 crashed (0xd12693):

1 0x000000010423dc18 in Unknown + 0x00000000 (merp + 0x000000000000dc18) 0x0000000000000000

2 0x000000019577f910 in ___CFRunLoopDoTimer + 0x000003D4 (CoreFoundation + 0x0000000000095910) 0x0000000000000000

3 0x000000019577f448 in ___CFRunLoopDoTimers + 0x00000148 (CoreFoundation + 0x0000000000095448) 0x000000016fd83c70

4 0x0000000195765854 in ___CFRunLoopRun + 0x00000734 (CoreFoundation + 0x000000000007b854) 0x000000016fd83cd0

5 0x0000000195764a94 in _CFRunLoopRunSpecific + 0x00000238 (CoreFoundation + 0x000000000007aa94) 0x000000016fd84a40

6 0x00000001a1207278 in _RunCurrentEventLoopInMode + 0x00000140 (HIToolbox + 0x00000000000c3278) 0x000000016fd84ac0

7 0x00000001a120a4e4 in _ReceiveNextEventCommon + 0x000002A0 (HIToolbox + 0x00000000000c64e4) 0x000000016fd84b10

8 0x00000001a1395480 in __BlockUntilNextEventMatchingListInModeWithFilter + 0x00000048 (HIToolbox + 0x0000000000251480) 0x000000016fd84b90

9 0x0000000199689a30 in __DPSNextEvent + 0x000002A8 (AppKit + 0x000000000003aa30) 0x000000016fd84ba0

10 0x000000019a02893c in -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 0x000002AC (AppKit + 0x00000000009d993c) 0x000000016fd84fa0

11 0x00000001012998c8 in Unknown + 0x00000000 (Microsoft Excel + 0x00000000012218c8) 0x000000016fd85070

12 0x000000010048673c in Unknown + 0x00000000 (Microsoft Excel + 0x000000000040e73c) 0x000000016fd850b0

13 0x0000000100480298 in Unknown + 0x00000000 (Microsoft Excel + 0x0000000000408298) 0x000000016fd85ca0

14 0x000000010047f780 in Unknown + 0x00000000 (Microsoft Excel + 0x0000000000407780) 0x000000016fd85e60

15 0x000000010423dafc in Unknown + 0x00000000 (merp + 0x000000000000dafc) 0x000000016fd85ec0

16 0x00000001954c3b28 in __dispatch_call_block_and_release + 0x0000001C (libdispatch.dylib + 0x0000000000001b28) 0x000000016fd85f00

17 0x00000001954dd858 in __dispatch_client_callout + 0x0000000C (libdispatch.dylib + 0x000000000001b858) 0x000000016fd85f20

18 0x00000001954fab7c in __dispatch_main_queue_drain.cold.5 + 0x00000328 (libdispatch.dylib + 0x0000000000038b7c) 0x000000016fd85f30

19 0x00000001954d2dac in __dispatch_main_queue_drain + 0x000000B0 (libdispatch.dylib + 0x0000000000010dac) 0x000000016fd85fe0

20 0x00000001954d2ce8 in __dispatch_main_queue_callback_4CF + 0x00000028 (libdispatch.dylib + 0x0000000000010ce8) 0x000000016fd86010

21 0x00000001957a4bdc in _CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 0x0000000C (CoreFoundation + 0x00000000000babdc) 0x000000016fd86030

22 0x00000001957658d8 in ___CFRunLoopRun + 0x000007B8 (CoreFoundation + 0x000000000007b8d8) 0x000000016fd86040

23 0x0000000195764a94 in _CFRunLoopRunSpecific + 0x00000238 (CoreFoundation + 0x000000000007aa94) 0x000000016fd86db0

24 0x00000001a1207278 in _RunCurrentEventLoopInMode + 0x00000140 (HIToolbox + 0x00000000000c3278) 0x000000016fd86e30

25 0x00000001a120a4e4 in _ReceiveNextEventCommon + 0x000002A0 (HIToolbox + 0x00000000000c64e4) 0x000000016fd86e80

26 0x00000001a1395480 in __BlockUntilNextEventMatchingListInModeWithFilter + 0x00000048 (HIToolbox + 0x0000000000251480) 0x000000016fd86f00

27 0x0000000199689a30 in __DPSNextEvent + 0x000002A8 (AppKit + 0x000000000003aa30) 0x000000016fd86f10

28 0x000000019a02893c in -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 0x000002AC (AppKit + 0x00000000009d993c) 0x000000016fd87310

29 0x000000019967cbe0 in -[NSApplication run] + 0x000001DC (AppKit + 0x000000000002dbe0) 0x000000016fd873e0

30 0x00000001996532d8 in _NSApplicationMain + 0x0000036C (AppKit + 0x00000000000042d8) 0x000000016fd87450

31 0x00000001952dab94 in Unknown + 0x00000000 (UnknownModule + 0x0000000000000000) 0x000000016fd874b0

ARM Thread State(64bit):

x0: 0x0000600002950480 x1: 0x0000000000000000 x2: 0x0000000000000000 x3:0x0000000000000000

x4: 0x0000000000000000 x5: 0x00000000f5e16b42 x6: 0x0000600001077410 x7:0x00000000ffffffff

x8: 0x000000010423dc18 x9: 0x00000000a1a1a1a1 x10: 0x000b3100000b3102 x11:0x0000010000000000

x12: 0x00000000fffffffd x13: 0x000b310000000000 x14: 0x00000000000b3100 x15:0x0000000000000000

x16: 0x00000001956398a4 x17: 0x000000020462daf8 x18: 0x0000000000000000 x19:0x0000600002950480

x20: 0x000000012a604080 x21: 0x0000600002852560 x22: 0x0000000000000000 x23:0x000000010423dc18

x24: 0x000000015aae5fa0 x25: 0x00000000141300c9 x26: 0x00000000211200e5 x27:0x000006777e3bd6a3

x28: 0x0000000000000000 fp: 0x000000016fd83bc0 lr: 0x000000019577fc50 sp:0x000000016fd83bc0

pc: 0x000000010423dc18 cpsr: 0x0000000080000800 far: 0x0000000000000000 esr:0x02000000

Last C++ Exception @ 2025-11-02 16:22:22 +0000 (3.445852 sec before crash) which is unlikely related to the root cause of the crashing thread:

... too much for post ...

OS Information

Operating System: Mac OS X 15.7.1 (Build 24G231)

CPU: ARM64e, Logical CPU Count: 12

Physical Memory: 49152 MB

Device_model: Mac16,8

Screen: 1512.000000 x 982.000000, bitsPerPixel = 24, frame = 0.000000, 0.000000, 1512.000000, 982.000000

CrashedApp_Virtual_Memory_Size_MB: 410037.000000

CrashedApp_Resident_Memory_Size_MB: 1579.093750

CrashedApp_Memory_Footprint_MB: 1245.522339

ErrorReportingDeviceUUID: <Remove PII>

ErrorReportingUUID: <Remove PII>

CrashedLogSessionId: <Remove PII>

TimeFromLaunch: 6 hours, 32 minutes, 11 seconds

CrashedSessionDuration: 23531

Total errors on this client: 2

Microsoft Application Information:

Audience: Production

Tenant_Id: <Remove PII>

AudienceChannel: CC

AudienceGroup: Production

Answer 1

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Hi @Gray

Thank you so much for contacting Microsoft Q&A Forum. 

Based on your description, I understand your Microsoft 365 apps (like Excel) are crashing frequently on your Mac, often just closing without a report.

The EXC_CRASH (SIGHUP) error, and the fact that the merp (Microsoft Error Reporting) module itself is mentioned as the crashed module, is definitely frustrating. Let's try a few standard troubleshooting steps to see if we can narrow down the cause.

Based on my research, here are a few things to try in order:

1. Unlink OneDrive: Sometimes, issues with OneDrive sync can affect the Office apps. Let's try unlinking and relinking it.
2. Start in Safe Mode: This will start your Mac with a minimal set of drivers and services. It helps rule out if other background software is causing the conflict. -Reference: Start up your Mac in safe mode Note: Microsoft is providing this information as a convenience to you. These sites are not controlled by Microsoft, and Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please ensure that you fully understand the risks before using any suggestions from the above link.
3. Uninstall and Reinstall: If the steps above don't work, a clean reinstallation might be necessary. First, completely uninstall the Office suite. Then, go to www.office.com, sign in, and download a fresh installer from your account portal.

I'm running the exact same application version on my Mac and haven't experienced these crashes. This makes me think it might be a conflict with another program or a corrupted file on your system. To help narrow this down, could you tell me:

• When did these crashes first start?
• Did you install any new software (especially fonts, system utilities, or other add-ins) right around the time the crashes began?

Let me know if any of those steps help.

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