Batkrook92 Do you get a lastexception with every crash, or just some of them? I will ask around about this LE itself (I recognize it but don't know exactly what causes it), but it would be good to know from your end whether it's always associated with these crashes or only sometimes.
Your dxdiag doesn't list any Sims 4-related errors, but given your high-end processor, you might be getting the type of crash that happens frequently on this CPU. Since the first troubleshooting step for this is to update the BIOS for your motherboard, and it's good to do this anyway, please try that first. I believe this is your board:
https://www.msi.com/Motherboard/PRO-Z790-P-WIFI/support
But double-check the model number of the board itself before downloading anything. I also can't see whether you already have the newest BIOS because the support site lists them differently than the dxdiag, but hopefully the system will report a version that matches something on the site.
If this doesn't help, and the game crashes again, please look for new errors in the Reliability Monitor. Click Windows key-R and enter "perfmon /rel" without quotes, and you'll see a chart of errors and updates with a column for each day. Today is on the right.
Look for an error that happened at exactly the time of your most recent Sims 4 crash. If you find one, double-click it to see more details, then copy that info and paste it into a reply here. If you don't see a new error, check back in an hour or so—the Reliability Monitor doesn't always update right away.
I've now updated the BIOS and had another crash.
Here is the information from the Reliability Monitor:
Description
Faulting Application Path: C:\Program Files\EA Games\The Sims 4\Game\Bin\TS4_x64.exe
Problem signature
Problem Event Name: APPCRASH
Application Name: TS4_x64.exe
Application Version: 1.120.117.1030
Application Timestamp: 691dd246
Fault Module Name: python37_x64.dll
Fault Module Version: 3.7.150.1013
Fault Module Timestamp: 67f85748
Exception Code: c0000005
Exception Offset: 000000000004423b
OS Version: 10.0.26200.2.0.0.768.101
Locale ID: 2057
Additional Information 1: 1228
Additional Information 2: 1228d4fe9c043357740d22634c2788ca
Additional Information 3: f1f5
Additional Information 4: f1f54ef6bff428f815975b664dfbfac9
Extra information about the problem
Bucket ID: d20f2b0ee2f6e62ad83a0fef7225caa6 (1745725326646168230)
RE lastexception - a new one appears to be generated for every crash. This is the latest:
<?xml version="1.0" ?><root>
<report><version>2</version><sessionid>eb092a0790a7b0486943ed14</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-12-18 12:02:02</createtime><buildsignature>Local.Unknown.Unknown.1.120.117.1030-1.200.000.685.Release</buildsignature><categoryid>tunable.py:1249</categoryid><desyncid>eb092a0790a7b0486943ed14</desyncid><systemconfig/><screenshot/><desyncdata>[manus] Exception in a tunable callback for variable _components in instance class <class 'sims4.tuning.instances.object_Food_IceCream_StracciatellaGelato'>. (SystemError: unknown opcode) Traceback (most recent call last): File "T:\InGame\Gameplay\Scripts\Core\sims4\utils.py", line 179, in wrapper File "T:\InGame\Gameplay\Scripts\Server\areaserver.py", line 167, in c_api_server_init_tick File "T:\InGame\Gameplay\Scripts\Core\sims4\core_services.py", line 164, in start_service_tick File "T:\InGame\Gameplay\Scripts\Core\sims4\service_manager.py", line 346, in start_single_service File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 192, in update_incremental_start File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 263, in _execute_gen File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 724, in invoke_registered_callbacks_gen File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 768, in _invoke_tunable_callbacks File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 446, in invoke_callback File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 1261, in invoke_callback File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 636, in invoke_callback File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 1518, in invoke_callback File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 446, in invoke_callback File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 1728, in invoke_callback File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 446, in invoke_callback File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 890, in invoke_callback File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\tunable.py", line 1249, in invoke_callback SystemError: unknown opcodertim=0 Client Session Time: 21.96 Num Save Errors: 0 Num Load Errors: 0 Current Game State: 0x96d01090 LoadingScreenActiveFlag: 1 Origin Version: 13,616,1,6133 Modded: False SystemInfo: Windows 11 10.0.26200 GPU: NVIDIA GeForce RTX 4080 32.0.15.9144, GUID: CBFC90EC-C808-11F0-BBE2-047C165791D5 </desyncdata></report>
<report><version>2</version><sessionid>eb092a0790a7b0486943ed14</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-12-18 12:02:03</createtime><buildsignature>Local.Unknown.Unknown.1.120.117.1030-1.200.000.685.Release</buildsignature><categoryid>posture_state_spec.py:44</categoryid><desyncid>eb092a0790a7b0486943ed14</desyncid><systemconfig/><screenshot/><desyncdata>[manus] Error during initialization of service tuning_instance_manager. This will likely cause additional errors in the future. (SystemError: error return without exception set) Traceback (most recent call last): File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 283, in _execute_gen File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 304, in _execute_func_and_calculate_time File "T:\InGame\Gameplay\Scripts\Server\interactions\interaction_instance_manager.py", line 50, in on_start File "T:\InGame\Gameplay\Scripts\Server\interactions\interaction_instance_manager.py", line 105, in _use_animation_constraint_cache File "T:\InGame\Gameplay\Scripts\Server\animation\animation_ac_cache.py", line 160, in read_ac_cache_from_resource File "T:\InGame\Gameplay\Scripts\Server\animation\animation_ac_cache.py", line 176, in _merge_cached_constraints File "T:\InGame\Gameplay\Scripts\Server\postures\posture_state_spec.py", line 44, in __new__ SystemError: error return without exception setrtim=0 Client Session Time: 21.96 Num Save Errors: 0 Num Load Errors: 0 Current Game State: 0x96d01090 LoadingScreenActiveFlag: 1 Origin Version: 13,616,1,6133 Modded: False SystemInfo: Windows 11 10.0.26200 GPU: NVIDIA GeForce RTX 4080 32.0.15.9144, GUID: CBFC90EC-C808-11F0-BBE2-047C165791D5 </desyncdata></report>
<report><version>2</version><sessionid>eb092a0790a7b0486943ed14</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-12-18 12:04:48</createtime><buildsignature>Local.Unknown.Unknown.1.120.117.1030-1.200.000.685.Release</buildsignature><categoryid>elements.py:1077</categoryid><desyncid>eb092a0790a7b0486943ed14</desyncid><systemconfig/><screenshot/><desyncdata>Exception in Sim Timeline: Exception running Element (AttributeError: 'cell' object has no attribute '_element_handle') Traceback (most recent call last): File "T:\InGame\Gameplay\Scripts\Server\scheduling.py", line 231, in simulate File "T:\InGame\Gameplay\Scripts\Server\elements.py", line 1077, in _run File "T:\InGame\Gameplay\Scripts\Server\scheduling.py", line 461, in run_childAttributeError: 'cell' object has no attribute '_element_handle'rtim=0 Client Session Time: 21.96 Num Save Errors: 0 Num Load Errors: 0 Current Game State: 0x96d01090 LoadingScreenActiveFlag: 1 Origin Version: 13,616,1,6133 Modded: False SystemInfo: Windows 11 10.0.26200 GPU: NVIDIA GeForce RTX 4080 32.0.15.9144, GUID: CBFC90EC-C808-11F0-BBE2-047C165791D5 </desyncdata></report>
<report><version>2</version><sessionid>eb092a0790a7b0486943ed14</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-12-18 12:05:03</createtime><buildsignature>Local.Unknown.Unknown.1.120.117.1030-1.200.000.685.Release</buildsignature><categoryid>interaction.py:3891</categoryid><desyncid>eb092a0790a7b0486943ed14</desyncid><systemconfig/><screenshot/><desyncdata>[rez] Posture graph threw an exception while being queried by autonomy: (TypeError: unsupported operand type(s) for &: 'int' and 'Metaclass') Traceback (most recent call last): Caught and logged: File "T:\InGame\Gameplay\Scripts\Server\objects\base_interactions.py", line 445, in _constraint_gen File "T:\InGame\Gameplay\Scripts\Server\objects\base_interactions.py", line 389, in _get_tested_aops File "T:\InGame\Gameplay\Scripts\Server\interactions\aop.py", line 166, in test File "T:\InGame\Gameplay\Scripts\Server\interactions\base\interaction.py", line 2802, in test File "T:\InGame\Gameplay\Scripts\Server\interactions\base\interaction.py", line 3891, in get_participants TypeError: unsupported operand type(s) for &: 'int' and 'Metaclass'rtim=0 Client Session Time: 21.96 Num Save Errors: 0 Num Load Errors: 0 Current Game State: 0x96d01090 LoadingScreenActiveFlag: 1 Origin Version: 13,616,1,6133 Modded: False SystemInfo: Windows 11 10.0.26200 GPU: NVIDIA GeForce RTX 4080 32.0.15.9144, GUID: CBFC90EC-C808-11F0-BBE2-047C165791D5 </desyncdata></report>
</root>
