You copy something, you go to paste it, and nothing happens. Maybe the old clipboard contents come out instead. Maybe Ctrl+V does absolutely nothing. It is one of the more maddening glitches because copy and paste is so basic that when it stops, half of what you were doing grinds to a halt. The good news is that this is one of the most fixable problems on a computer. In nearly every case it is a single hung process or a tiny configuration issue, not a sign that anything is actually wrong with your machine.
This is the master guide for the whole cluster. Work through the fixes below roughly in order, since the early ones are fast and solve the majority of cases. If you already know your exact setup, jump to the device-specific guide for Windows 11, Mac, or Excel, each of which has its own specific culprits.
First, narrow down what actually broke
Before changing any settings, spend thirty seconds working out which half is failing. The fix is completely different depending on the answer.
- Test in a plain text editor. Copy a word from one place and paste it into Notepad (Windows) or TextEdit (Mac). If it pastes there but not in your other app, the clipboard is fine and the destination app is the problem.
- Try the right-click menu instead of the shortcut. If right-click copy and paste works but Ctrl+C and Ctrl+V do not, your keyboard or your shortcuts are the issue, not the clipboard.
- Try a different app entirely. If nothing pastes anywhere, the clipboard process itself has hung, and that is the most common cause of all.
Fix 1: restart the clipboard process
This is the single most effective fix, and most people never try it because they do not know the clipboard runs as a background process you can restart on its own. When that process hangs, copies stop landing and pastes come back empty. Restarting just that process is faster than rebooting and keeps everything else open.
On Windows
Open Task Manager (Ctrl+Shift+Esc), find Windows Explorer, and choose Restart. That refreshes the desktop and the clipboard handling along with it, which clears most stuck states. If you are on Remote Desktop, the process to deal with is rdpclip.exe (sometimes listed as RDP Clipboard Monitor), which handles clipboard sharing with the remote machine. End it in Task Manager, then relaunch it yourself: press Win+R, type rdpclip, and hit Enter. It does not come back on its own. A plain restart of the machine resets the clipboard too, if that is quicker.
On Mac
The Mac clipboard is handled by a process called pboard (the pasteboard server). When it locks up, open Terminal and run killall pboard. The process restarts automatically and your clipboard comes back to life. You can also force-quit it from Activity Monitor if you prefer not to use Terminal.
Fix 2: rule out the keyboard and the shortcut
If right-click copy and paste works but the keyboard shortcuts do not, the clipboard is innocent. A few things to check:
- A stuck modifier key. A physically sticky Ctrl, Cmd, or Shift key can break shortcuts in ways that look random. Press each one a few times, or test on another keyboard.
- Remapped shortcuts.Some apps and keyboard utilities reassign Ctrl+C and Ctrl+V. If it only fails in one program, check that app’s keyboard settings.
- The right shortcut for the context. In most terminals, Ctrl+C cancels the running command rather than copying. Use Ctrl+Shift+C and Ctrl+Shift+V there instead. We cover this fully in our guide to copy and paste in the terminal.
If the shortcuts are the problem across every app, our dedicated walkthrough for Ctrl+C and Ctrl+V not working goes deeper into keyboard drivers, stuck keys, and sticky-keys settings.
Fix 3: the destination app is blocking paste
Sometimes copy works perfectly and one specific app simply will not accept a paste. This is common in banking sites, password fields, and some secure forms that deliberately disable pasting. It also happens when a browser tab has lost focus or a web app has a script error. Reload the page, click directly into the field first, and try again. If it is a browser-wide problem, restarting the browser usually clears it.
Fix 4: clipboard history and clipboard managers
On Windows, Clipboard History (Win+V) can occasionally get into a bad state, especially if it has filled up. Open clipboard history settings and clear it, then test a fresh copy. Third-party clipboard tools can also conflict with each other; if you have more than one running, quit all but one and try again. If you are not sure what these tools do or whether you want one, our explainer on what a clipboard manager is covers the basics.
Fix 5: Office apps and Remote Desktop
Two settings deserve their own mention because they break copy and paste in predictable ways.
- Excel and Word. Office apps fail in their own special ways: a rogue add-in, a full Office clipboard, or merged cells can all block a paste. The fixes are specific, so see copy and paste not working in Excel for the full list, including when to use Paste Special.
- Remote Desktop sessions. If paste fails between your local machine and a remote one, clipboard redirection has usually dropped. Restarting rdpclip.exe inside the remote session, as in Fix 1, is the standard repair.
When to stop troubleshooting
If you have restarted the clipboard process, ruled out the keyboard, tested a plain text editor, and cleared clipboard history, you have covered well over ninety percent of cases. At that point a full restart of the computer resets every process and almost always clears whatever was left. It is rare to need anything more, and rarer still for copy and paste failure to point at a genuine hardware or system fault.
Frequently asked questions
Why did copy and paste suddenly stop working?
Almost always a stuck background process, not a broken computer. On Windows the clipboard process (often rdpclip.exe during Remote Desktop) hangs; on Mac the pboard process locks up. The first item you copy after the freeze gets dropped instead of stored. Restarting that one process, or just restarting the machine, fixes it the vast majority of the time.
How do I fix copy and paste without restarting my whole computer?
Restart only the clipboard process. On Windows, open Task Manager and restart Windows Explorer, which refreshes clipboard handling. If you are on Remote Desktop, end rdpclip.exe instead, then relaunch it manually with Win+R, typing rdpclip, since it does not restart on its own. On Mac, open Terminal and run killall pboard, which restarts the pasteboard server. Each takes a few seconds and you keep everything else open.
Why does Ctrl+C work but Ctrl+V does nothing?
Usually the destination app, not the clipboard. Some programs block paste in certain fields, a browser tab may have lost focus, or a stuck modifier key is interfering. Try pasting into a plain text editor first. If it pastes there, the original app or field is the problem, not your clipboard.