# McAfee Application: Musarubra Also called mcafee antivirus, mcafee live, mcafee total protection Musarubra, Security An OEM-bundled consumer suite. People search it when a trial nag appears. McUICnt.exe is a common UI process. It is not Windows Security. ## What you need to know McAfee is the OEM nag suite. Trellix is the work split. Consumer McAfee ships on many new PCs as a trial. McUICnt.exe is a common UI process. The trial plus live Defender is a two-engine mess. Trellix is the enterprise product from the same history, not this download. - **What is it?**: OEM-bundled consumer AV **Why the nag?**: Trial expired. Not a virus by itself **Same as Trellix?**: No. Trellix is the enterprise split Feex says If McAfee came with the laptop and you never wanted it, I would uninstall the trial and let Windows Security own the slot. I would not leave McShield.exe and MsMpEng.exe both live. ## What is McAfee? McAfee is the consumer suite that ships as an OEM trial on many PCs. McUICnt.exe is a usual UI process. Trellix is the enterprise split. ## If you have never used it If a new PC nags McAfee, that is usually an OEM trial, not a virus named McUICnt.exe. Download or manage it from mcafee.com. Consumer McAfee is Musarubra. Enterprise Trellix is the split-off work product. The trial plus still-live Defender is the two-engine fight. Uninstall the trial if you will use Windows Security instead. ## What is it used for? **OEM trial protection** The preinstall registers as antivirus until it expires and nags. That nag is licensing, not malware. **Total Protection extras** VPN and identity extras sit in paid bundles. The trial may only be the antivirus seat. **WebAdvisor toolbar** Browser add-ons are McAfee extras. They are not Edge and not Defender SmartScreen. ## Who is it for? - People hunting the McAfee nag on a new laptop - Users who paid and still see Defender live - Anyone who confused consumer McAfee with Trellix at work ## Current status Actively sold as consumer McAfee under Musarubra. This article is not Trellix Endpoint. ## How old is it? John McAfee's company dates to 1987. Intel owned it, then the consumer brand stayed McAfee while enterprise became Trellix. Musarubra is the current consumer owner. A 1990s VirusScan floppy is not this nag. ## Versions Major channels first. Exact build numbers are not all verified here. OEM trial Total Protection Trellix (enterprise, other product) ## System requirements Values follow the publisher's public guidance. Workload still changes the real need. ### Minimum | Operating system | Windows 10 or Windows 11, per current McAfee consumer support | | ---------------- | -------------------------------------------------------------------------------------------- | | RAM | McAfee lists a 2 GB class minimum on many pages. OEM trials still feel heavy on 4 GB laptops | ## Resource profile - **CPU demand**: On-access scanner plus nag UI **RAM demand**: Several McAfee processes at idle ## Installed processes These executables belong to this product when it is installed. | McUICnt.exe | McAfee UI container on many consumer builds | | ------------ | ------------------------------------------- | | McShield.exe | On-access scanner on many installs | ## Startup components McAfee services start with Windows while the trial or paid suite is installed. ## File locations | Typical install | C:\Program Files\McAfee\\ | | --------------- | ------------------------- | ## Common problems ### Trial nag plus live Defender Expired McAfee can keep UI processes while Defender also scans. Uninstall the trial or finish the purchase so one owner remains. ### WebAdvisor leftover after uninstall Browser extensions can survive the suite. Remove them in the browser, not by deleting System32. ## Getting unstuck ### Use McAfee Consumer Product Removal if Apps will not clear it McAfee documents MCPR for stubborn OEM installs. Settings > Apps is the first try. ### Check Windows Security after removal Defender should become the owner again. If the page still names McAfee, a leftover service is registered. ### Do not download Trellix for a home nag Trellix is the enterprise line. Home users want mcafee.com or an uninstall, not a work sensor. ## Alternatives Windows Security after you remove the trial. Do not stack McAfee on Norton just because both came in mailers. ## Official help and downloads Start with the vendor. Random exe sites are not a support channel. | Download | [www.mcafee.com/ ](https://www.mcafee.com/)Official installer or vendor page | | ------------- | ---------------------------------------------------------------------------- | | Help | [www.mcafee.com/support ](https://www.mcafee.com/support)Vendor support | | Official site | [www.mcafee.com/ ](https://www.mcafee.com/)Start here, not a random exe host | ## Related hardware OEM trials add idle RAM. The nag is not a GPU problem. ## Technical details Technical details Vendor version numbers change. This article does not pin a build. ## Related These entities connect to this article. Type is shown on every link. [Windows Security: Application](https://feex.it/wiki/software/windows-security)[How to read Task Manager: Guide](https://feex.it/wiki/software/system/how-to-read-task-manager) ## Sources and verification Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. [How we research](https://feex.it/wiki/research). - [McAfee official site ](https://www.mcafee.com/)· Vendor product page - [McAfee help ](https://www.mcafee.com/support)· Vendor support - [Foxhole process map ](https://foxhole.feex.it/)· First-party samples on Windows PCs. Not a lab benchmark. ## Was this article useful? A yes or no is enough. Pick a reason if you want, or add a short note. Quick facts The short identity of this page. Specs, sources, and the full story stay in the article. - **Developer**: Musarubra **Category**: Consumer antivirus **Process**: McUICnt.exe **License**: Paid subscription. OEM trials are common **First released**: 1987 **Official site**: [mcafee.com](https://www.mcafee.com/) **Mapped by Feex**: Seen on Windows PCs in Foxhole Feex Reviewed: Last verified August 2026 --- Source: [Canonical Feex Wiki page](https://feex.it/wiki/software/mcafee/) [Developer guide](https://feex.it/wiki/developers/) | [API policy](https://feex.it/developers/api-policy/) | [Agent guidance](https://feex.it/wiki/llms.txt)