First, make sure you’re on the October 2018 build by opening the run box, and typing writer in it. The version should be 1809.
Before you can view clipboard history on Windows 10, you need to first enable it. Open the Settings app and go to the System group of settings. Select the Clipboard tab, and turn on clipboard history.
If you look closely at the panel, you will see that each item has a little pin icon on it. Clicking it will exempt the item from being cleared when you clear your clipboard history. Speaking of which, you can clear your history by clicking the Clear all button on the clipboard history panel. You can also delete it from the Clipboard tab in the Settings app.
A Word Of Caution
Users tend to copy and paste sensitive information like logins, passwords, and even banking information to their clipboard. This isn’t a good idea, ever, but before the October 2018 update, it wasn’t as dangerous because Windows only remembered the last entry on your clipboard. If you enable clipboard history on Windows 10, you need to take special care that you do not copy sensitive information to your clipboard. If you do copy sensitive information to the clipboard, make sure that you clear it out immediately. You can remove individual items from your history.
The history will persist past a system restart so you have to be proactive about keeping it clean. Sensitive information shouldn’t be stored there but to make sure that it’s still usable, you should trim the items on the clipboard regularly so that only important items are kept long term. There doesn’t seem to be any limit on how many items it can store but since this is a native Windows 10 feature, you can expect it to store a reasonably large number of items.