BricsCAD Freezing Frequently – Need Help

[Aniruddha]

Hi all,
I’m facing a critical issue with BricsCAD where it not only freezes, but also causes the entire system to hang.

When this happens, Windows becomes completely unresponsive, and I’m forced to restart the PC. After restarting, I’m unable to use BricsCAD properly as the issue keeps repeating.

I have already tried reinstalling BricsCAD, but the problem still persists.

 

Observations:

System-wide freeze (not just BricsCAD)

Requires full PC restart

Happens on start of BricsCAD

Reinstall did not fix the issue

Looking for help with possible causes:

Graphics driver / GPU acceleration issues

Hardware compatibility problems

Corrupt settings or user profile

Conflict with plugins or LISP routines

Has anyone experienced this kind of behavior? Any guidance or troubleshooting steps would be greatly appreciated.

 

[SLW210]

Can you provide your computer, OS and graphics card/driver specifications?

 

Are there any error messages?

 

OS crash logs?

[Aniruddha]

12 minutes ago, SLW210 said:

Can you provide your computer, OS and graphics card/driver specifications?

 

Are there any error messages?

 

OS crash logs?

 

Thanks for looking into this.

Here are my system details:

- OS: Windows 11 Pro (25H2)
- CPU: [i7 13700 hx]
- RAM: [16 gb 4800 mhz]
- GPU: [Nvidia Rtx 5050 8 GB]
- Graphics Driver Version: [596.21]

There are no specific error messages — BricsCAD freezes and then the whole system becomes unresponsive.

Found nothing in OS crash logs 

It seems to happen right on startup of BricsCAD, before working on any drawing.

Let me know if I should test anything specific.

[mhupp]

Posting on their official forums would get this more att. System wide freeze/crash is pretty serious. hopefully just stuck in a loop or something and not a virus.

 

• Try booting in safe mode or disconnected from the internet.
• remove any software or add-ins that were installed recently.
• Check if windows needs to update.

 

before the whole os freezes you need to look at the wait chain for the process.

Go into task manger > Details right click analyze wait chain for BricsCAD process might have some answers on why its freezing.

 

One of our software didn't like onedrive running before itself and would freeze until it was closed. had to remove onedrive from the startup process and start it later.

 

Edited April 17 by mhupp

[SLW210]

Besides what @mhupp stated, try turning off antivirus, anti-malware, etc. Could be simply having portions of the install blocked.

 

You might look and make sure you are installing as admin, make sure you do a "COMPLETE UNINSTALL" (AutoCAD has a procedure for this, not sure about BricsCAD), then reinstall as admin with antivirus, etc turned off.

[BIGAL]

I have found if you do a support request Bricscad are very good and do respond. 

 

I am running Bricacad V25 with Win 11, I7, 16gb, NVIDIA GEOFORCE GTX and works fine, yes have locked up on occasions but task manager always allows me to close BRICSCAD, normally a programming problem, infinite loop etc. Did have a fatal error opening a DWG sent via Email, which I think corrupted the large dwg.

 

Have downloaded and installed multi versions over time and had no problems.

[Aniruddha]

On 17/04/2026 at 16:05, Aniruddha said:

 

Thanks for looking into this.

Here are my system details:

- OS: Windows 11 Pro (25H2)
- CPU: [i7 13700 hx]
- RAM: [16 gb 4800 mhz]
- GPU: [Nvidia Rtx 5050 8 GB]
- Graphics Driver Version: [596.21]

There are no specific error messages — BricsCAD freezes and then the whole system becomes unresponsive.

Found nothing in OS crash logs 

It seems to happen right on startup of BricsCAD, before working on any drawing.

Let me know if I should test anything specific.

 

Thanks for the detailed suggestions — really helpful.

I haven’t checked the wait chain yet, I’ll try that and see if anything specific is causing the hang.

Also interesting point about startup apps — I do have a few things running in the background, so I’ll try disabling them and test again.

[Aniruddha]

On 18/04/2026 at 16:19, SLW210 said:

Besides what @mhupp stated, try turning off antivirus, anti-malware, etc. Could be simply having portions of the install blocked.

 

You might look and make sure you are installing as admin, make sure you do a "COMPLETE UNINSTALL" (AutoCAD has a procedure for this, not sure about BricsCAD), then reinstall as admin with antivirus, etc turned off.

Thanks for the suggestions.

I’ll try doing a clean uninstall and reinstall as admin, and also test with antivirus temporarily disabled to see if that makes any difference.

Will update here once I’ve tested these steps.

[Aniruddha]

On 19/04/2026 at 07:24, BIGAL said:

I have found if you do a support request Bricscad are very good and do respond. 

 

I am running Bricacad V25 with Win 11, I7, 16gb, NVIDIA GEOFORCE GTX and works fine, yes have locked up on occasions but task manager always allows me to close BRICSCAD, normally a programming problem, infinite loop etc. Did have a fatal error opening a DWG sent via Email, which I think corrupted the large dwg.

 

Have downloaded and installed multi versions over time and had no problems.

Thanks for sharing that.

In my case the system becomes completely unresponsive, so I’m not able to even access Task Manager when it happens, which makes it a bit tricky to diagnose.

I’ll also consider raising a support request if the issue continues after trying the suggested steps.

[Aniruddha]

Quick update on this issue:

It turned out to be related to a recent Windows security update affecting graphics applications.

I reached out to BricsCAD support and got confirmation that update KB5074109 was causing issues, and a newer cumulative update (KB5078127) includes fixes for it.

 

Reply from BricsCAD:-

 

Hi Aniruddha,

We found that there has been a Windows Security Update - KB5074109 - which affects graphic applications.

The new update KB5078127 is cumulative and includes security fixes and improvements from the January 13, 2026, security update (KB5074109) and the out-of-band update (KB5077744) from January 17, 2026.

See more info here: https://support.microsoft.com/en-us/topic/january-24-2026-kb5078127-os-builds-26200-7628-and-26100-7628-out-of-band-cf5777f6-bb4e-4adb-b9cd-2b64df577491

Please check if you have that update on your computer.

Kind regards,
Cosmina.
 

After checking and updating the system accordingly, the issue seems to be resolved and BricsCAD is no longer freezing on startup.

Sharing this here in case anyone else runs into a similar problem.

Thanks everyone for the suggestions and help.

[Aniruddha]

14 minutes ago, Aniruddha said:

Quick update on this issue:

It turned out to be related to a recent Windows security update affecting graphics applications.

I reached out to BricsCAD support and got confirmation that update KB5074109 was causing issues, and a newer cumulative update (KB5078127) includes fixes for it.

 

Reply from BricsCAD:-

 

Hi Aniruddha,

We found that there has been a Windows Security Update - KB5074109 - which affects graphic applications.

The new update KB5078127 is cumulative and includes security fixes and improvements from the January 13, 2026, security update (KB5074109) and the out-of-band update (KB5077744) from January 17, 2026.

See more info here: https://support.microsoft.com/en-us/topic/january-24-2026-kb5078127-os-builds-26200-7628-and-26100-7628-out-of-band-cf5777f6-bb4e-4adb-b9cd-2b64df577491

Please check if you have that update on your computer.

Kind regards,
Cosmina.
 

After checking and updating the system accordingly, the issue seems to be resolved and BricsCAD is no longer freezing on startup.

Sharing this here in case anyone else runs into a similar problem.

Thanks everyone for the suggestions and help.

Turns out the issue wasn’t BricsCAD after all — just a Windows update doing its thing  
Always curious how these updates manage to surprise you at the worst time.

just Windows doing its usual surprise “feature testing” on production machines