Ymmapi.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. You can fix your Ymmapi.dll problem by downloading the correct Ymmapi.dll file. The following information can help you determine if Ymmapi.dll is a Windows system file or if it belongs to an application that you can trust.
The process known as YMMAPI Module or Yahoo! Mail
belongs to software Yahoo! Toolbar or YMMAPI Module or BT Yahoo! Applications or Yahoo! Browser Services or AT&T Yahoo! Applications or Yahoo! Mail or att.net Toolbar or SBC Yahoo! Applications or Verizon Yahoo! Applications
by Yahoo! (www.yahoo.com).
Description: Ymmapi.dll is not essential for Windows and will often cause problems. The Ymmapi.dll file is located in a subfolder of "C:\Program Files" (mostly C:\Program Files\YAHOO!\COMMON\).
Known file sizes on Windows 10/8/7/XP are 285,464 bytes (40% of all occurrences), 190,496 bytes and 5 more variants.
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. The program is not visible. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. Ymmapi.dll is not a Windows core file. Ymmapi.dll is a Verisign signed file. It is digitally signed. Therefore the technical security rating is 48% dangerous, however you should also read the user reviews.
Recommended: Identify Ymmapi.dll related errors
If Ymmapi.dll is located in a subfolder of C:\Windows, the security rating is 60% dangerous. The file size is 171,520 bytes (42% of all occurrences), 155,714 bytes, 145,120 bytes or 160,992 bytes. The program has no visible window. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. The Ymmapi.dll file is not a Windows core file.
Important: Some malware camouflages itself as Ymmapi.dll. Therefore, you should check the Ymmapi.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 Ymmapi. 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 Ymmapi.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.