DelayHook Error Qt 6.4.3

[Kevin470]

Hello,

I have an "error" that pops up on the Application Output when I run a project which says:
[Error] DelayHook can't open TMUMH_DELAY_HOOKING_MUTEX, error code: 2

It keeps being printed on the Application Output every second or two. As far as I can see, it does not affect the program anyway.
I tried creating two new projects, a fresh console project and a fresh Widgets project and run them without editing anything. They had the same error message printed on the output.
What could be the reason behind this Error Message? I am unable to find any information on it.
Thanks.

Edit: I am running it on Windows 11

[Kevin470]

@JonB
I have narrowed it down a bit. I ran a Windows update (KB5023774) for the PC and I did not consider that this error could have started after this update.
TMUMH might be connected to "Trend Micro Security" Antivirus dll hooks (probably tmumh.sys - I am not sure). It is installed on the system and maybe the Windows Update might have disturbed something related to the Trend Micro - Windows cooperation.

Thank you so much for responding and directing me to the right way. I guess I will have to wait till Trend Micro Security releases an update and maybe that might solve the issue.

[JonB]

@Kevin470
Just so you know, I believe this error message comes from you using MSVC (right?). It's to do with delay-loading of DLLs at runtime. Something to do with https://learn.microsoft.com/en-us/cpp/build/reference/understanding-the-helper-function and https://devblogs.microsoft.com/oldnewthing/20170126-00/?p=95265. That's just FYI, I don't know what its trying to load or what you can do about it.....

[Kevin470]

@JonB
I have narrowed it down a bit. I ran a Windows update (KB5023774) for the PC and I did not consider that this error could have started after this update.
TMUMH might be connected to "Trend Micro Security" Antivirus dll hooks (probably tmumh.sys - I am not sure). It is installed on the system and maybe the Windows Update might have disturbed something related to the Trend Micro - Windows cooperation.

Thank you so much for responding and directing me to the right way. I guess I will have to wait till Trend Micro Security releases an update and maybe that might solve the issue.

[ChristopherM]

@Kevin470 I'm seeing the same issue after Windows 10 update KB5023773 and am running Trend Micro Security Agent 14.0.12032.

[QtRalf]

We have the same problems in our company with Qt 4.7, 4.8, 4.9, 5.12.
I have uninstalled the cumulative update KB5025221 for Windows 10 22H2 from April.

Now the problem with trend micro, windows and Qt is solved.

Best regards Ralf

[windowx1990]

@Kevin470 Hi, I have exactly the same problem with you and i also have Trend Micro Security on my laptop. I have been searching this issue for a few days. Have you tried to close the antivirus software? Could this solve the issue?