

If the sihost.exe CPU usage is excessive, you can also end the process via the Task Manager to deal with it swiftly. png or any other image formats you wish to change the default photo viewer for. If you cant find it from the list, select More apps > Look for another app on this PC and browse the app launcher. Select the new photo viewer app from the list.jpeg or any other image format, and click on the Photos app. Scroll down and select Choose defaults by file type. Press Win + I and select Apps > Default apps.Here are the steps to change the default photo viewer app on Windows 11: png and any other photo formats you use as appropriate.ĭefault apps work slightly differently on Windows 11. Enable the Always use this app to open.

If you dont see it on the list, select More apps > Look for another app on this PC and browse the app executable. Select the photo viewer app of your choice.Right-click the photo and select Open With > Choose another app.Heres how you can change the default photo viewer app on Windows 10: We highly recommend this method, as this is more or less a permanent fix, while the other methods are only temporary workarounds. If you use a different Photo viewer like the classic IrfanView, for instance, you will no longer face the high CPU usage problem.

The memory leak problem is with the default Photos app only. There are a number of ways to resolve the high CPU usage issue, which weve discussed in the sections below. However, thats not to say that you cant work around it. As such, as of July 2022, there is no way to permanently fix the Shell Infrastructure Host High CPU Usage issue at its root. How to Fix Shell Infrastructure Host High CPU Usage?Įven though this bug has been around for quite some time, Microsoft still hasnt addressed it. Additionally, its also possible that the high CPU usage is due to corrupt system files or various UI related settings. This leak has existed since Windows 10 and hasnt yet been patched in Windows 11. This bug causes sihost.exe to query the registry continuously, which leads to the high CPU usage. As stated, there is a memory leak issue with the default photo viewer app in Windows, i.e., Photos.
