Hi David,
We appreciate you for being a part of Windows 10.
Please be informed that, the link you have provided in the post is applied to Windows vista. The troubleshooting steps of Windows vista may not be applicable to solve the problems in Windows 10.
I will assist you to delete the run history in Windows 10.
Kindly follow the below steps:
Please backup the registry before performing below steps.
Registry disclaimer
To do so: Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow
these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the
article in the Microsoft Knowledge Base:
322756 (http://support.microsoft.com/kb/322756/)
How to back up and restore the registry in Windows.
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Press Windows + R keys on the keyboard to open the run command prompt.
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Type regedit in the run text box and hit
Enter key on the keyboard. (Press Yes button if dialog box prompted)
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Navigate to the below path on the left pane of the registry editor.
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU
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On the right of the screen, there are keys that contain the recently entered commands on the Run Box. Delete the ones that you want to delete. Right click on any of the keys and click on
Delete.
I hope the above information helps. Kindly let us know if you need any further assistance with Windows. We are glad to assist you.
Thank you.