The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the upd.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.
Description: Upd.exe is not essential for Windows and will often cause problems. The file upd.exe is located in a subfolder of "C:\Program Files\Common Files".
Known file sizes on Windows 10/8/7/XP are 57,344 bytes (80% of all occurrences) or 49,152 bytes.
The file is a file with no information about its developer. The program has no visible window. The file is not a Windows system file. The process starts upon Windows startup (see Registry key: Run, MACHINE\Run). Therefore the technical security rating is 64% dangerous, however you should also read the user reviews.
Recommended: Identify upd.exe related errors
If upd.exe is located in a subfolder of "C:\Program Files", the security rating is 64% dangerous. The file size is 8,704 bytes (75% of all occurrences) or 9,728 bytes. There is no description of the program. The application is loaded during the Windows boot process (see Registry key: Run, MACHINE\Run). The file is not a Windows core file.
If upd.exe is located in a subfolder of the user's profile folder, the security rating is 36% dangerous. The file size is 9,728 bytes (50% of all occurrences) or 165,376 bytes. The program has a visible window. There is no information about the author of the file. The process is loaded during the Windows boot process (see Registry key: Run, MACHINE\Run). Upd.exe is not a Windows core file. upd.exe appears to be a compressed file.
If upd.exe is located in the Windows folder for temporary files, the security rating is 46% dangerous. The file size is 30,720 bytes.
If upd.exe is located in the C:\Windows folder, the security rating is 86% dangerous. The file size is 643,072 bytes.
External information from Paul Collins:
Important: Some malware also uses the file name upd.exe, for example Adware:W32/BrowserAid (detected by F-Secure), and W32.Spybot.Worm or Trojan.Gen.2 (detected by Symantec). Therefore, you should check the upd.exe process on your PC to see if it is a threat. If upd.exe has changed your browser's search engine and start page, you can recover your browser's default settings as follows:Reset default browser settings for Internet-Explorer ▾
A clean and tidy computer is the key requirement for avoiding problems with upd. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the upd.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.