What is AcSignIcon.dll?

The genuine AcSignIcon.dll file is a software component of AutoCAD by Autodesk.
A Dynamic Link Library file associated with Autodesk's AutoCAD software application for drafting and computer-aided design. It supports 2D and 3D design formats. AutoCAD is utilised across a broad range of industries including engineering, utilities and construction.

AcSignIcon stands for AcSignIcon Module

AcSignIcon.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 AcSignIcon.dll is a Windows system file or if it belongs to an application that you can trust.

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AcSignIcon.dll file information

The process known as AcSignIcon Module or AutoCAD component belongs to software AutoCAD (version 2004, 2007 - English, 2009 - English, 2005 - English, 2008 - English, LT 2005 - English) or AcSignIcon Module or DWG TrueView (version 2008) or Autodesk Component or Autodesk Land Desktop (version 2004) or AutoCAD Electrical (version 2008) by Autodesk (

Description: AcSignIcon.dll is not essential for Windows and will often cause problems. The file AcSignIcon.dll is located in the C:\Windows\System32 folder or sometimes in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 185,448 bytes (19% of all occurrences), 43,160 bytes and 9 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 has no visible window. There is no detailed description of this service. The AcSignIcon.dll file is not a Windows system file. It can change the behavior of other programs or manipulate other programs. The program can be removed using the Control Panel's Add\Remove programs applet. The AcSignIcon.dll file is a Verisign signed file. The file has a digital signature. AcSignIcon.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 41% dangerous, however you should also read the user reviews.

Uninstalling this variant: The software vendor offers the option to do the following:
  • search the support area on the Autodesk website
  • uninstall the associated program (Start > Control Panel > Uninstall a Program > Autodesk Component or AutoCAD 2007 - English)

Recommended: Identify AcSignIcon.dll related errors

Important: Some malware camouflages itself as AcSignIcon.dll. Therefore, you should check the AcSignIcon.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.


User Comments

Possible AutoCAD License Utility Module.
Autodesk AutoCAD Module
Seems to be some BrowserHelperObject, maybe to send some License-IDs
Also seems to be related to the p2p application Shareaza. Occasionally when querying Discovery Services in this app, the program requests the runtime to shut down "in an unusual way" and cites AcSigIcon.dll as the cause.
Autocad digital signature overlay icon handler

Rating chart

Summary: Average user rating of AcSignIcon.dll: based on 8 votes with 5 user comments. One user thinks it's probably harmless. 4 users think it's neither essential nor dangerous. One user suspects danger. 2 users think AcSignIcon.dll is dangerous and recommend removing it.

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Best practices for resolving AcSignIcon issues

A clean and tidy computer is the key requirement for avoiding problems with AcSignIcon. 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 AcSignIcon.dll 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.

Other processes

AcSignIcon.dll [all]