What Is Cisco Secure Client (AnyConnect)? Is It Safe to Disable at Startup?
Cisco Secure Client (AnyConnect) is Cisco's VPN app for secure remote access. Safe if genuine; disable at startup only if you do not need always-on VPN.
- Verdict
- Optional at startupIt is a legitimate VPN client, but startup loading is only necessary if you need automatic or always-on corporate VPN access.
- File name
- vpnui.exe
- Publisher
- Cisco Systems
- Platforms
- Windows, macOS
- Reviewed
What Is Cisco Secure Client (AnyConnect)?
Cisco Secure Client, formerly called AnyConnect, is Cisco's remote access and security client. On Windows, vpnui.exe is the user interface process for connecting to a company or school VPN. On macOS, the app serves the same purpose: it lets you sign in, connect to a configured VPN, and manage connection settings.
Many organizations use it so employees can securely reach internal websites, file shares, and other company systems from home or while traveling. Depending on how your IT team configured it, the client may also include security modules beyond basic VPN access.
Is It Safe?
Yes, if it is the real Cisco app. Cisco Systems is a well-known vendor, and vpnui.exe is normally part of Cisco Secure Client / AnyConnect.
If you want to verify it, check that the file is installed in Cisco's program folder and that the digital signature shows Cisco Systems. Be more cautious if vpnui.exe is running from an unusual location such as Downloads, Temp, or a random user folder. VPN software is not a Windows system component, so it should not pretend to be one.
If your employer or school requires this client, do not remove it without checking first. Disabling or uninstalling it can break remote access and may stop security checks your organization expects.
Should I Disable It at Startup?
Usually, yes if you do not need it to connect automatically. Disabling its startup entry normally just stops the interface from loading when you sign in; you can still open the app manually when you need the VPN.
Keep it enabled at startup if:
- your company requires always-on or pre-logon VPN
- you connect to work resources every day and want it ready immediately
- your IT department specifically told you not to disable it
Disable it at startup if:
- you only use the VPN occasionally
- you are no longer using that work or school account
- it is sitting in the background and you never connect
On managed work devices, startup behavior may be enforced by policy. If Kudu shows the item but it turns itself back on, that is usually an IT policy rather than malware.
Why Is It Using High CPU or Memory?
vpnui.exe itself is usually lightweight. Higher usage often happens when:
- it is trying to reconnect repeatedly
- the VPN tunnel is unstable
- the client is checking posture or security requirements
- another Cisco Secure Client component is doing the heavy work, not the UI process
If usage stays high, disconnect and reconnect once, then restart the app. Also check whether the issue only happens on a specific network. If the VPN is required for work, persistent high usage is best reported to your IT team because the profile or security modules may be managed centrally.
How to Disable or Remove It
If you only want to stop it loading at sign-in, disable its startup item rather than uninstalling it.
On Windows, startup entries may appear in the Run keys, Startup folder, or Task Scheduler. On macOS, they may appear as Launch Agents or login-related items. If you uninstall it instead, use the normal app removal method for your platform or your organization's approved software portal.
Do not remove Cisco services or background components on a managed device unless you know your organization does not need them.
Where Kudu Helps
Kudu can show whether Cisco Secure Client has a startup entry and let you disable it without uninstalling the app. You can also use Performance Monitor to see whether vpnui.exe is actually the process using CPU or memory, and link it back to its startup item when available.
If you are unsure whether the file is genuine, Kudu's Malware Scanner can help flag suspicious persistence or lookalike files, but it complements your antivirus rather than replacing it.
Frequently asked questions
- Can I uninstall Cisco Secure Client if I no longer work for that company?
- Usually yes, if you no longer need that organization's VPN or security access. On a managed device, check with IT first because other company tools may depend on it.
- Will disabling Cisco Secure Client at startup stop the VPN from working?
- Usually no. It normally just stops the app from opening automatically, and you can launch it manually when you need to connect.
- Is vpnui.exe a Windows system process?
- No. It is part of Cisco's VPN client, not Windows itself, so it should be signed by Cisco Systems and installed with the Cisco app.
See every app that starts with your computer
Kudu’s Startup Manager lists Run keys, Startup folder entries, scheduled tasks, Launch Agents, and XDG autostart items in one place. On Windows it also shows each item’s boot time impact.
Download Kudu Free →