What link click is and why it's on your machine

Link Click is not bloatware — it's a legitimate Windows utility that Microsoft includes to handle how your computer opens web links from different programs. When you click a hyperlink in an email, a document, or a chat process, Link Click is often the invisible middleman that decides which browser opens and how.

The confusion happens because Link Click runs in the background and you never see it working. It has a technical name — rundll32.exe executing a Windows component — which makes it look suspicious if you spot it in your task manager. It's not. It's a core part of how Windows manages links across different applications.

Understanding what Link Click does helps you decide whether to leave it alone or adjust how it works. Most people benefit from leaving it as-is, but some users want to control which browser opens their links or disable it entirely if they prefer manual control.

Key Takeaways

  • Link Click is a Windows system component that opens web links in your default browser when you click them in emails, documents, or other programs.
  • It appears as rundll32.exe in task manager and runs automatically, but it is not malware or bloatware — it is a legitimate Microsoft utility.
  • You can change which browser Link Click uses by changing your default browser in Windows Settings.
  • Disabling Link Click is possible but not recommended, because it will break link-opening in many programs until you re-enable it.

How Link Click actually works

When you click a link in Outlook, Word, Slack, or any other program, that program doesn't open your browser directly. Instead, it hands the link to Windows and asks "please open this." Link Click receives that request and checks your Windows settings to see which browser you've chosen as your default.

Once it knows which browser to use, Link Click launches it and passes the web address along. The whole process takes a fraction of a second, which is why you don't notice it happening. If you change your default browser in Windows Settings, Link Click automatically uses the new one the next time you click a link.

This system exists because Windows needs a single, consistent way to handle links across hundreds of different programs. Without it, each program would need its own browser-launching code, and changing your default browser would require updating settings in dozens of places.

Why it looks suspicious in task manager

Link Click shows up as rundll32.exe when you open task manager, which is a generic Windows process for running certain system functions. The name alone tells you nothing about what it's actually doing, so it's straightforward to assume it's something unwanted.

Real malware sometimes disguises itself as rundll32.exe, which adds to the confusion. The difference is that legitimate Link Click processes come from the Windows System folder (usually C:\Windows\System32) and are signed by Microsoft. Malware versions often hide in temporary folders or user directories.

If you want to verify that a rundll32.exe process is actually Link Click and not something malicious, right-click it in task manager, select "Open file location," and check the folder path. If it points to C:\Windows\System32 and the file properties show it's signed by Microsoft Corporation, it's legitimate.

When Link Click causes real problems

Link Click itself rarely causes problems, but it can be affected by browser conflicts or corrupted Windows settings. If links stop opening at all, or they open in the wrong browser, the issue is usually not Link Click but rather a broken default browser setting or a browser that didn't install correctly.

Some users report that Link Click opens links slowly or hangs briefly before launching a browser. This usually happens when your default browser is set to one that's not fully installed, or when you have too many startup programs competing for resources. Restarting your computer or reinstalling your browser typically fixes it.

If you use multiple browsers and want different ones to open links from different programs, Link Click won't do that — it only respects the single default browser setting. You would need third-party tools or manual browser selection to achieve that level of control.

How to change which browser Link Click uses

Open Windows Settings and go to Apps > Default Apps. Scroll down to "Web browser" and click the current default. A menu will show all browsers installed on your computer. Select the one you want, and Link Click will use that browser from then on.

If your preferred browser doesn't appear in the list, it may not be installed correctly. Uninstall it completely, restart your computer, and reinstall it. During installation, make sure you don't skip any steps that ask about setting it as default.

On Windows 11, Microsoft has made it slightly harder to change defaults — the system will ask you to confirm your choice and may prompt you again the next time you click a link. This is intentional design to keep users from accidentally changing browsers, but it means you may see extra confirmation dialogs.

Should you disable Link Click

Disabling Link Click is technically possible but not recommended. If you disable it, links in emails, documents, and chat programs will stop opening automatically. You'll have to copy the link manually and paste it into your browser address bar every time, which defeats the purpose of having clickable links.

Some users disable it because they want more control over what opens and when, or because they're concerned about security. If that's your situation, a better approach is to change your browser settings to ask you where to save files or to open links in a new tab, rather than disabling Link Click itself.

If you've already disabled it and want to turn it back on, go to Settings > Apps > Default Apps and set a default browser again. Link Click will automatically re-enable itself.

Link Click and your privacy

Link Click itself doesn't collect data about which links you click. It's a straightforward routing tool — it sees the link, checks your settings, and passes it to your browser. Your browser is what tracks your browsing history and sends data to websites.

If you're concerned about privacy when clicking links, the issue is not Link Click but rather your browser choice and its privacy settings. Some browsers collect less data than others, and all of them let you adjust tracking and cookie settings. Switching browsers or adjusting browser privacy settings will have a real impact; disabling Link Click will not.

Frequently Asked Questions

Is rundll32.exe Link Click always safe?

Rundll32.exe from C:\Windows\System32 signed by Microsoft is safe. Rundll32.exe from other folders may not be. Check the file location and signature in task manager properties. If it's not in System32 or not signed by Microsoft, it could be malware.

Can I stop Link Click from running?

You can disable it through Services (services.msc), but this will break link-opening in most programs. It's not recommended. If Link Click is causing actual problems, reinstalling your default browser or restarting Windows usually fixes the issue faster than disabling it.

Why do some links open in the wrong browser?

This usually means your default browser setting is not what you think it is, or the browser you set as default is not fully installed. Go to Settings > Apps > Default Apps and verify which browser is actually set as default. Reinstall that browser if links still open incorrectly.

Does Link Click slow down my computer?

Link Click uses minimal resources and only runs when you click a link. If your computer is slow, Link Click is not the cause. Slow link-opening usually means your browser is slow to launch, not that Link Click is the problem.

Can I use different browsers for different programs?

Link Click doesn't support that — it only uses your single default browser. You would need third-party tools or manual selection to open links in different browsers from different programs. For most users, one default browser is simpler and sufficient.