Ucrtbase.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if ucrtbase.dll is a Windows system file or if it belongs to an application that you can trust.
Description: Ucrtbase.dll is not essential for the Windows OS and causes relatively few problems. Ucrtbase.dll is located in a subfolder of C:\Windows.
The file size on Windows 10/8/7/XP is 921,280 bytes.
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. It can change the behavior of other programs or manipulate other programs. The program has no visible window. It is digitally signed. The service has no detailed description. It is not a Windows core file. Therefore the technical security rating is 27% dangerous.
Recommended: Identify ucrtbase.dll related errors
If ucrtbase.dll is located in a subfolder of "C:\Program Files", the security rating is 17% dangerous. The file size is 917,184 bytes. It can change the behavior of other programs or manipulate other programs. The program is not visible. The file is digitally signed. The service has no detailed description. The ucrtbase.dll file is not a Windows system file.
If ucrtbase.dll is located in the C:\Windows\System32 folder, the security rating is 0% dangerous. The file size is 922,432 bytes. It is a Windows core system file. Ucrtbase.dll is a Microsoft signed file. The program has no visible window. The file is certified by a trustworthy company.
Important: Some malware camouflages itself as ucrtbase.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ucrtbase.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
A clean and tidy computer is the key requirement for avoiding problems with ucrtbase. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the ucrtbase.dll process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.