verify you typed the name correctly, and then retry when they venture to open an tool.
If you are one of them, read this post fromMiniToolto find some methods to fix it.
It can also exist when you open an app.

Now, you might find some fixes to get rid of it.
Keep on your reading.
you might follow the steps below:
Step 1:TypeFile Explorerin theSearchmenu to open it.
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Then, click theViewtab.
Step 2:Click theOptionsbutton, and selectChange folder and search options.
Step 3:SelectThis PCfrom theOpen File Explorer tothe drop-down menu and clickOK.
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If not, you might try the following methods.
You may encounter the issue that File Explorer keeps opening.
This post shows 4 solutions to fix the File Explorer keeps popping up.

Step 2:TypePowershellin the box and check theCreate this task with administrative privilegesbox.
Or you’re able to copy and paste it directly to avoid errors.
After that, check to see if the Windows cannot find issue has gone.
Is Task Manager not responding in Windows 10/8/7?
Now get the full solutions to fix Task Manager if you cant open it.
Step 2:Click theTroubleshoottab and click theWindows Store Appspart.
Then, clickRun the troubleshooter.
Then, it will start to troubleshoot and fix the issue.
If it still exists, here is the last solution for you.
Here is how to that.
Step 2:go for the programs exe file inFile Explorer, and press theF2key.
Then pop in another title for the file, and press theReturnkey.
Then, the issue should be fixed.
Final Words
How to fix the Windows cannot find error in Windows 10?
Now after reading this post, you know 4 methods to get rid of it.
Just choose one based on your actual situations to fix the annoying issue.