Qt designer consistently crashes on Windows 11

[LeeGillieCCP]

Been fighting this for days, and felt it had to be something I was doing because I new to the tool.

Tonight I simply started the designer and left for dinner, and by the time I got back it had crashed again, with no interaction other than starting it.

My system is a Dell Alienware Aurora Ryzen Edition, with AMD Ryzen 9 5950X 16-Core Processor, 3401 Mhz, 16 Core(s), 32 Logical Processor(s) and 64 GB ram installed. Display is through NVIDIA GeForce RTX 3090. Nothing is overclocked. I am a retired software developer, and use my machine typically 12 hours per day, and in everything else I do it is exceptionally stable.

I am running Qt Widgets Designer 6.8.0 and find it to be extremely unstable, as it consistently crashes a few minutes after starting it. I checked with support to see if they were interested in the information I have about this, but because I am using the community license they told me the only option I have is to post to these forums. I really have no clue what may be wrong here, environmentally or what ever, but being new to Qt I seriously need some help from someone with experience to point me to a diagnosis path.

TIA - for any insights or suggestions.

This is a typical application event log sequence I see:

Log Name:      Application
Source:        Application Error
Date:          3/6/2025 9:25:44 PM
Event ID:      1000
Task Category: Application Crashing Events
Level:         Error
Keywords:      
User:          SWIFT\Lee
Computer:      Swift
Description:
Faulting application name: designer.exe, version: 6.8.2.0, time stamp: 0x67935ee8
Faulting module name: ntdll.dll, version: 10.0.26100.3037, time stamp: 0x95e6c489
Exception code: 0xc0000409
Fault offset: 0x0000000000123686
Faulting process id: 0xC9A8
Faulting application start time: 0x1DB8F0327C88843
Faulting application path: C:\Users\vulca\AppData\Local\Programs\Python\Python39\Lib\site-packages\PySide6\designer.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: 5b304703-6de7-4b70-8e55-fb457db61da3
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="2025-03-07T05:25:44.7518076Z" />
    <EventRecordID>14460</EventRecordID>
    <Correlation />
    <Execution ProcessID="29956" ThreadID="52720" />
    <Channel>Application</Channel>
    <Computer>Swift</Computer>
    <Security UserID="S-1-5-21-436388351-2998492563-1922584270-1001" />
  </System>
  <EventData>
    <Data Name="AppName">designer.exe</Data>
    <Data Name="AppVersion">6.8.2.0</Data>
    <Data Name="AppTimeStamp">67935ee8</Data>
    <Data Name="ModuleName">ntdll.dll</Data>
    <Data Name="ModuleVersion">10.0.26100.3037</Data>
    <Data Name="ModuleTimeStamp">95e6c489</Data>
    <Data Name="ExceptionCode">c0000409</Data>
    <Data Name="FaultingOffset">0000000000123686</Data>
    <Data Name="ProcessId">0xc9a8</Data>
    <Data Name="ProcessCreationTime">0x1db8f0327c88843</Data>
    <Data Name="AppPath">C:\Users\vulca\AppData\Local\Programs\Python\Python39\Lib\site-packages\PySide6\designer.exe</Data>
    <Data Name="ModulePath">C:\WINDOWS\SYSTEM32\ntdll.dll</Data>
    <Data Name="IntegratorReportId">5b304703-6de7-4b70-8e55-fb457db61da3</Data>
    <Data Name="PackageFullName">
    </Data>
    <Data Name="PackageRelativeAppId">
    </Data>
  </EventData>
</Event>

Log Name:      Application
Source:        Windows Error Reporting
Date:          3/6/2025 9:25:47 PM
Event ID:      1001
Task Category: None
Level:         Information
Keywords:      
User:          SWIFT\Lee
Computer:      Swift
Description:
Fault bucket 1290316064666640506, type 5
Event Name: BEX64
Response: Not available
Cab Id: 0

Problem signature:
P1: designer.exe
P2: 6.8.2.0
P3: 67935ee8
P4: ntdll.dll
P5: 10.0.26100.3037
P6: 95e6c489
P7: 0000000000123686
P8: c0000409
P9: 0000000000000030
P10: 

Attached files:
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.4ffddda6-66ad-4649-8689-1418fb5dff76.tmp.dmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.c7a9fb1e-106c-4e5b-ae7f-7d47336b6f03.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.a163becc-ff05-4e9d-a933-7f32464bb57a.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.438f6a31-c433-4150-9e6b-5fbef1f781ea.tmp.txt
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.f0f6a457-2fca-4c0b-9ec7-b7a2cc88626b.tmp.xml

These files may be available here:
\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_designer.exe_1bac38d689bf98293acff84b7edd73f4be9d_19bc16ef_fd1a1f00-67f2-4f68-aab1-91a0499a8671

Analysis symbol: 
Rechecking for solution: 0
Report Id: 5b304703-6de7-4b70-8e55-fb457db61da3
Report Status: 268435456
Hashed bucket: 57ac10ba130d455401e81f9fda6f607a
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="2025-03-07T05:25:47.9864146Z" />
    <EventRecordID>14461</EventRecordID>
    <Correlation />
    <Execution ProcessID="29956" ThreadID="52720" />
    <Channel>Application</Channel>
    <Computer>Swift</Computer>
    <Security UserID="S-1-5-21-436388351-2998492563-1922584270-1001" />
  </System>
  <EventData>
    <Data Name="Bucket">1290316064666640506</Data>
    <Data Name="BucketType">5</Data>
    <Data Name="EventName">BEX64</Data>
    <Data Name="Response">Not available</Data>
    <Data Name="CabId">0</Data>
    <Data Name="P1">designer.exe</Data>
    <Data Name="P2">6.8.2.0</Data>
    <Data Name="P3">67935ee8</Data>
    <Data Name="P4">ntdll.dll</Data>
    <Data Name="P5">10.0.26100.3037</Data>
    <Data Name="P6">95e6c489</Data>
    <Data Name="P7">0000000000123686</Data>
    <Data Name="P8">c0000409</Data>
    <Data Name="P9">0000000000000030</Data>
    <Data Name="P10">
    </Data>
    <Data Name="AttachedFiles">
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.4ffddda6-66ad-4649-8689-1418fb5dff76.tmp.dmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.c7a9fb1e-106c-4e5b-ae7f-7d47336b6f03.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.a163becc-ff05-4e9d-a933-7f32464bb57a.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.438f6a31-c433-4150-9e6b-5fbef1f781ea.tmp.txt
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.f0f6a457-2fca-4c0b-9ec7-b7a2cc88626b.tmp.xml</Data>
    <Data Name="StorePath">\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_designer.exe_1bac38d689bf98293acff84b7edd73f4be9d_19bc16ef_fd1a1f00-67f2-4f68-aab1-91a0499a8671</Data>
    <Data Name="AnalysisSymbol">
    </Data>
    <Data Name="Rechecking">0</Data>
    <Data Name="ReportId">5b304703-6de7-4b70-8e55-fb457db61da3</Data>
    <Data Name="ReportStatus">268435456</Data>
    <Data Name="HashedBucket">57ac10ba130d455401e81f9fda6f607a</Data>
    <Data Name="CabGuid">0</Data>
  </EventData>
</Event>

Log Name:      Application
Source:        Application Error
Date:          3/6/2025 9:29:23 PM
Event ID:      1000
Task Category: Application Crashing Events
Level:         Error
Keywords:      
User:          SWIFT\Lee
Computer:      Swift
Description:
Faulting application name: designer.exe, version: 6.8.2.0, time stamp: 0x67935ee8
Faulting module name: ntdll.dll, version: 10.0.26100.3037, time stamp: 0x95e6c489
Exception code: 0xc0000409
Fault offset: 0x0000000000123686
Faulting process id: 0x33E0
Faulting application start time: 0x1DB8F216F78497B
Faulting application path: C:\Users\vulca\AppData\Local\Programs\Python\Python39\Lib\site-packages\PySide6\designer.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: a03c220d-dc3b-40f0-827f-c1af7762ea1a
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="2025-03-07T05:29:23.1683929Z" />
    <EventRecordID>14462</EventRecordID>
    <Correlation />
    <Execution ProcessID="51556" ThreadID="54252" />
    <Channel>Application</Channel>
    <Computer>Swift</Computer>
    <Security UserID="S-1-5-21-436388351-2998492563-1922584270-1001" />
  </System>
  <EventData>
    <Data Name="AppName">designer.exe</Data>
    <Data Name="AppVersion">6.8.2.0</Data>
    <Data Name="AppTimeStamp">67935ee8</Data>
    <Data Name="ModuleName">ntdll.dll</Data>
    <Data Name="ModuleVersion">10.0.26100.3037</Data>
    <Data Name="ModuleTimeStamp">95e6c489</Data>
    <Data Name="ExceptionCode">c0000409</Data>
    <Data Name="FaultingOffset">0000000000123686</Data>
    <Data Name="ProcessId">0x33e0</Data>
    <Data Name="ProcessCreationTime">0x1db8f216f78497b</Data>
    <Data Name="AppPath">C:\Users\vulca\AppData\Local\Programs\Python\Python39\Lib\site-packages\PySide6\designer.exe</Data>
    <Data Name="ModulePath">C:\WINDOWS\SYSTEM32\ntdll.dll</Data>
    <Data Name="IntegratorReportId">a03c220d-dc3b-40f0-827f-c1af7762ea1a</Data>
    <Data Name="PackageFullName">
    </Data>
    <Data Name="PackageRelativeAppId">
    </Data>
  </EventData>
</Event>

Log Name:      Application
Source:        Windows Error Reporting
Date:          3/6/2025 9:29:25 PM
Event ID:      1001
Task Category: None
Level:         Information
Keywords:      
User:          SWIFT\Lee
Computer:      Swift
Description:
Fault bucket 1290316064666640506, type 5
Event Name: BEX64
Response: Not available
Cab Id: 0

Problem signature:
P1: designer.exe
P2: 6.8.2.0
P3: 67935ee8
P4: ntdll.dll
P5: 10.0.26100.3037
P6: 95e6c489
P7: 0000000000123686
P8: c0000409
P9: 0000000000000030
P10: 

Attached files:
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.1466e6c5-1149-46bc-a079-584b65dcace8.tmp.dmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.13df3d65-bc87-45c3-91a2-ab67c67ac3bd.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.c7fb9f0a-0d67-44f2-a451-f1069e757a5f.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.bc6fdd93-c5b3-499f-96d6-c664e01ae229.tmp.txt
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.518e13ac-bd97-4e57-ba2d-cc7e4aa420e2.tmp.xml

These files may be available here:
\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_designer.exe_1bac38d689bf98293acff84b7edd73f4be9d_19bc16ef_78b1f791-5c1b-41d4-911d-afb2fec7db68

Analysis symbol: 
Rechecking for solution: 0
Report Id: a03c220d-dc3b-40f0-827f-c1af7762ea1a
Report Status: 268435456
Hashed bucket: 57ac10ba130d455401e81f9fda6f607a
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="2025-03-07T05:29:25.6854431Z" />
    <EventRecordID>14463</EventRecordID>
    <Correlation />
    <Execution ProcessID="51556" ThreadID="54252" />
    <Channel>Application</Channel>
    <Computer>Swift</Computer>
    <Security UserID="S-1-5-21-436388351-2998492563-1922584270-1001" />
  </System>
  <EventData>
    <Data Name="Bucket">1290316064666640506</Data>
    <Data Name="BucketType">5</Data>
    <Data Name="EventName">BEX64</Data>
    <Data Name="Response">Not available</Data>
    <Data Name="CabId">0</Data>
    <Data Name="P1">designer.exe</Data>
    <Data Name="P2">6.8.2.0</Data>
    <Data Name="P3">67935ee8</Data>
    <Data Name="P4">ntdll.dll</Data>
    <Data Name="P5">10.0.26100.3037</Data>
    <Data Name="P6">95e6c489</Data>
    <Data Name="P7">0000000000123686</Data>
    <Data Name="P8">c0000409</Data>
    <Data Name="P9">0000000000000030</Data>
    <Data Name="P10">
    </Data>
    <Data Name="AttachedFiles">
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.1466e6c5-1149-46bc-a079-584b65dcace8.tmp.dmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.13df3d65-bc87-45c3-91a2-ab67c67ac3bd.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.c7fb9f0a-0d67-44f2-a451-f1069e757a5f.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.bc6fdd93-c5b3-499f-96d6-c664e01ae229.tmp.txt
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.518e13ac-bd97-4e57-ba2d-cc7e4aa420e2.tmp.xml</Data>
    <Data Name="StorePath">\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_designer.exe_1bac38d689bf98293acff84b7edd73f4be9d_19bc16ef_78b1f791-5c1b-41d4-911d-afb2fec7db68</Data>
    <Data Name="AnalysisSymbol">
    </Data>
    <Data Name="Rechecking">0</Data>
    <Data Name="ReportId">a03c220d-dc3b-40f0-827f-c1af7762ea1a</Data>
    <Data Name="ReportStatus">268435456</Data>
    <Data Name="HashedBucket">57ac10ba130d455401e81f9fda6f607a</Data>
    <Data Name="CabGuid">0</Data>
  </EventData>
</Event>

Log Name:      Application
Source:        Windows Error Reporting
Date:          3/6/2025 9:30:46 PM
Event ID:      1001
Task Category: None
Level:         Information
Keywords:      
User:          SWIFT\Lee
Computer:      Swift
Description:
Fault bucket 2111525315961788241, type 5
Event Name: PerfWatsonVS12Data
Response: Not available
Cab Id: 0

Problem signature:
P1: PerfWatsonTcdb
P2: 0
P3: 0
P4: 0
P5: 0
P6: 
P7: 
P8: 
P9: 
P10: 

Attached files:
\\?\C:\Users\vulca\AppData\Local\Temp\VSTelem.Out\202503070530_d17.13_17.13.35825.156_15416_08b33be2-ff29-4820-9a24-d8bdd0e64299.tcdb
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.489f6f31-4d96-4754-a882-933583cecf91.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.a20c3efa-4f85-4c0d-b005-c60316974ffb.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.3c267aad-adaa-45a0-ad28-b710c9e3b6ec.tmp.txt
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.abfbb55e-4914-4ef5-8f95-cdae2cbf3d01.tmp.xml

These files may be available here:
\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\NonCritical_PerfWatsonTcdb_688f135dd185f2a8133a474a2518efc6ce6cc4a_00000000_b172d1e9-766b-4634-b45c-3943e84b8f32

Analysis symbol: 
Rechecking for solution: 0
Report Id: b172d1e9-766b-4634-b45c-3943e84b8f32
Report Status: 268435456
Hashed bucket: fb30d2b9a7acf0305d4da51668259751
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="2025-03-07T05:30:46.3506074Z" />
    <EventRecordID>14464</EventRecordID>
    <Correlation />
    <Execution ProcessID="15416" ThreadID="25536" />
    <Channel>Application</Channel>
    <Computer>Swift</Computer>
    <Security UserID="S-1-5-21-436388351-2998492563-1922584270-1001" />
  </System>
  <EventData>
    <Data Name="Bucket">2111525315961788241</Data>
    <Data Name="BucketType">5</Data>
    <Data Name="EventName">PerfWatsonVS12Data</Data>
    <Data Name="Response">Not available</Data>
    <Data Name="CabId">0</Data>
    <Data Name="P1">PerfWatsonTcdb</Data>
    <Data Name="P2">0</Data>
    <Data Name="P3">0</Data>
    <Data Name="P4">0</Data>
    <Data Name="P5">0</Data>
    <Data Name="P6">
    </Data>
    <Data Name="P7">
    </Data>
    <Data Name="P8">
    </Data>
    <Data Name="P9">
    </Data>
    <Data Name="P10">
    </Data>
    <Data Name="AttachedFiles">
\\?\C:\Users\vulca\AppData\Local\Temp\VSTelem.Out\202503070530_d17.13_17.13.35825.156_15416_08b33be2-ff29-4820-9a24-d8bdd0e64299.tcdb
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.489f6f31-4d96-4754-a882-933583cecf91.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.a20c3efa-4f85-4c0d-b005-c60316974ffb.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.3c267aad-adaa-45a0-ad28-b710c9e3b6ec.tmp.txt
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.abfbb55e-4914-4ef5-8f95-cdae2cbf3d01.tmp.xml</Data>
    <Data Name="StorePath">\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\NonCritical_PerfWatsonTcdb_688f135dd185f2a8133a474a2518efc6ce6cc4a_00000000_b172d1e9-766b-4634-b45c-3943e84b8f32</Data>
    <Data Name="AnalysisSymbol">
    </Data>
    <Data Name="Rechecking">0</Data>
    <Data Name="ReportId">b172d1e9-766b-4634-b45c-3943e84b8f32</Data>
    <Data Name="ReportStatus">268435456</Data>
    <Data Name="HashedBucket">fb30d2b9a7acf0305d4da51668259751</Data>
    <Data Name="CabGuid">0</Data>
  </EventData>
</Event>

Lee Gillie, CCP
Spokane, WA

[sierdzio]

Best use Qt Creator instead, it offers the same functionality while being a full-blown IDE at the same time.

Alternatively, you can try downgrading to some older Qt version, or use older Qt Designer with new Qt, it should still work.