While checking the applications that launch when Windows starts, I noticed an entry named only "F." It looks suspicious, and the option to open its file location is unavailable, so I cannot tell what program created it. Could this be malware, or is it more likely a leftover from software I previously removed? What is the safest way to identify and remove it?
3 Answers
If you already scanned the system and cannot locate an associated file, an empty startup entry is a likely explanation. Check the relevant Windows startup registry keys, such as the machine-wide RunOnce location and the current user’s Run location. Export or back up the key first, then remove only the clearly orphaned value.
That name is definitely worth investigating, but the label alone does not prove it is malware. Run a full antivirus scan and try checking the startup entries in Safe Mode, where third-party programs are less likely to be active. It could also be an orphaned entry left behind after uninstalling something.
A useful tool for this is Microsoft Sysinternals Autoruns. It shows startup entries from more locations than Task Manager, including entries that do not provide an “Open file location” option. Look through the entries and disable or remove the one that matches “F” only after confirming what it belongs to.
Thanks! I checked the registry and found the entry under the Windows RunOnce/Run startup locations. It appeared to be a leftover from removing old software, so I deleted it and the mysterious entry disappeared.