Hi,
To address the issue you're experiencing, please verify your computer's hardware and ensure that all Windows updates have been installed. Pending updates could be affecting the performance of Trend Micro programs. Additionally, check your computer's hardware to ensure that memory usage is not at 100%. You can do this by opening the Task Manager and looking under the Performance tab. It's also possible that your computer is not fully compatible with Windows 11, which could be causing difficulties in running applications like Trend Micro. You might also want to try reinstalling Trend Micro Maximum Security using the link provided on our help center, which you can visit at http://helpcenter.trendmicro.com/install, as it may not have been properly installed initially.