# ProPoMax hangs on start after the latest Windows 11 update V23H2 (sigh)

**URL:** <https://prepomax.discourse.group/t/propomax-hangs-on-start-after-the-latest-windows-11-update-v23h2-sigh/1690>\
**Category:** Bug Reports\
**Created:** [April 18, 2024, 12:26pm UTC](https://prepomax.discourse.group/t/propomax-hangs-on-start-after-the-latest-windows-11-update-v23h2-sigh/1690 "2024-04-18T12:26:02Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![chep](https://avatars.discourse-cdn.com/v4/letter/c/c2a13f/32.png) [@chep](https://prepomax.discourse.group/u/chep)\
**Post date:** [April 18, 2024, 12:26pm UTC](https://prepomax.discourse.group/t/propomax-hangs-on-start-after-the-latest-windows-11-update-v23h2-sigh/1690/1 "2024-04-18T12:26:02Z")

</div>

I am a new user of PrePoMax and everything was working quite well.  
This week however, the application hangs after displaying the user interface and the splash screen stays up with the wait cursor spinning forever. (Version 2.0.0 and 2.0.8)

I downloaded the Repo and rebuilt on VS2019, (and made sure VTK was referencing correctly)  
Long story short, vtkControl.Designer.cs:: OnPaint is spinning forever inside of the \_renderWindow.Render()

I commented out the block (and yes I know nothing will paint then) and the program starts and loads models.  
I added a flag in the paint window to defer painting that I could set in debug mode, and I re-enabled the paint block after the model was loaded, and everything works as designed.

I don’t know if you can reproduce this on your side… but I have a workaround for now.  
I’m pretty confident that M$ did something to mess up timings…

Chris

---

<div class="post-metadata">

**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\
**Post date:** [May 12, 2024, 6:11pm UTC](https://prepomax.discourse.group/t/propomax-hangs-on-start-after-the-latest-windows-11-update-v23h2-sigh/1690/2 "2024-05-12T18:11:08Z")

</div>

I cannot reproduce this problem.

---

<div class="post-metadata">

**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\
**Post date:** [May 13, 2024, 9:14am UTC](https://prepomax.discourse.group/t/propomax-hangs-on-start-after-the-latest-windows-11-update-v23h2-sigh/1690/3 "2024-05-13T09:14:57Z")

</div>

Thank you for reporting the problem and the solution. I will keep my eye on it but I will close the topic.

---

<div class="post-metadata">

**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\
**Post date:** [May 13, 2024, 9:15am UTC](https://prepomax.discourse.group/t/propomax-hangs-on-start-after-the-latest-windows-11-update-v23h2-sigh/1690/4 "2024-05-13T09:15:00Z")

</div>