Should I block it?

No, this file is 100% safe to run.

Additional versions

4.8.5.0	9.09%
4.8.4.0	9.09%
4.8.2.0	54.55%
4.7.4.0	18.18%
4.7.4.0	9.09%

Relationships

QtCore4.dll

Qt4 by Amazon Services LLC (Signed)

Remove QtCore4.dll

Version:	4.7.4.0
MD5:	3a93611de893df30cc2cae5625b278c2
SHA1:	4341a7051d66573c9722b43a3dc4608b3c733d13
SHA256:	92e5bf7e0a8e0c603d71c839359ebe0d86c10990242d97d42081b0ec17a0bb51

What is QtCore4.dll?

This module is part of the Qt Development framework, a cross-platform C++ application development and UI framework. Qt provides programs with enhanced UI features, such as opacity, drop-shadows, glow, and filtering support, along with graphics and web support enables rich UIs. Qt framework is available to any third party program to integrate.

About QtCore4.dll (from Amazon Services LLC)

“Qt is a cross-platform application and UI framework. Qt will change the way you develop C++ applications for mobile devices forever. The easy-to-use Qt framework means you will be tied no longer to a ”

Details

File name:	qtcore4.dll
Publisher:	Digia Plc
Product name:	Qt4
Description:	C++ application development framework.
Typical file path:	C:\users\user\appdata\local\amazon\kindle\application\qtcore4.dll
File version:	4.7.4.0
Size:	2.15 MB (2,253,184 bytes)
Certificate
Issued to:	Amazon Services LLC
Authority (CA):	VeriSign
Effective date:	Monday, March 19, 2012
Expiration date:	Friday, March 21, 2014
Digital DNA
File packed:	No
.NET CLR:	No

More details

Programs

The following program will install this file

Amazon Kindle

Amazon Services LLC

4% remove

“Read more than 1 million Kindle books on your PC with our free Kindle reading app. No Kindle device required. Our Whispersync technology syncs your last page read, bookmarks, notes, and highlights across various devices. Our Whispersync technology automatically syncs your books across apps, so you can start reading on one device with the Kindle app installed, and pick up where you left off on another device with the Kindle app installed...”