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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(243.2, 55.00000000000001%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ED%3C/text%3E%3C/svg%3E)
I am using a widely used C# snippet (for instance here, also same code suggested as an answer to my earlier question) to get a WinUI AppWindow for setting start-up window dimensions.
Lately I'm getting System.Runtime.InteropServices.COMException (screenshot shown below), but strangely happens only about 1 in 4 or 5 times of launching the app.
I understand that this error may not be attributed to Maui (web search shows this error has been around for long) but posting it here just in case relevant because I only came across it while migrating to Maui. Event Viewer on Windows 11 (22H2 25158.1000) indicates:
Faulting module name: CoreMessagingXP.dll, version: 10.0.22621.1002, time stamp: 0xc93a5eeb
Visual Studio is Version 17.3.0 Preview 4.0
Is this a known issue with Maui and if so what is causing this?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(22.400000000000002, 3%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EWZ%3C/text%3E%3C/svg%3E)
Hi anonymous user-4673 , I created a .Net Maui template app, and tried to get the window. But I can't reproduce your issue, would you mind sharing the steps to reproduce? Is there any other method to use the window in your project? And may I ask your MAUI version?
Hi @Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) .
The problem has now disappeared. I tried to reproduce by repeatedly launching and relaunching my Maui app that caused the exception and the app not misbehaving any more.
I didn't make anything significant to the app and the only notable change is rebooting my machine.
I will keep an eye if this problem shows up again, and update you by commenting here.
Thank you.
OK. If you have any other issues, please feel free to let me know.
This issue never resurfaced, so I would assume it is not related to Maui which is good news.
I am just giving a closure to this question with this comment.
Thanks for your sharing.
This issue never resurfaced, so I would assume it is not related to Maui which is good news.
I am just giving a closure to this question with this remark.