RUNDLL32.ORG

Since Rundll32.exe is involved with many processes in Windows, it isn't uncommon that error messages crop up that include references to it. That does not mean that Rundll32.exe is itself the actual culprit. More often than not the problem lies elsewhere, such as the DLL file that is being called. Persistent error messages may also indicate infection by a virus or a spyware or Trojan problem. Regular scans with an anti-virus and spyware removal software with updated definitions should be made. There are too many possible reasons for error messages to be discussed here but H. Leboeuf has a Web page with a large catalog of articles from the Microsoft Knowledge Base that are about Rundll32.exe error messages.

Running software task on Microsoft Win XP / Vista OS (operating system). Application program, exe name rundll32.exe. Purpose, review and Anti-spyware howto below.

Process name: rundll32.exe (rundll32)

Best descriptions from our users:
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Summary    We have discovered remotely-exploitable vulnerabilities in Green Dam, the censorship software reportedly mandated by the Chinese government. Any web site a Green Dam user visits can take control of the PC.

Microsoft today issued 10 security updates that patched a record 31 vulnerabilities in Windows, Internet Explorer, Excel, Word, Windows Search and other programs, including 18 bugs marked 'critical.' Of the 10 bulletins, six patched some part of Windows, while three patched an Office application or component, and one fixed a flaw in IE. The total bug count was the most patched by Microsoft in a single month since the company began regularly scheduled updates in 2003. The previous record of 26 vulnerabilities patched occurred in both August 2008 and August 2006. 'This is a very broad bunch,' said Wolfgang Kandek, CTO at Qualys, 'compared to last month, which was really all about PowerPoint. You've got to work everywhere, servers and workstations, and even Macs if you have them. It's not getting any better, the number of vulnerabilities [Microsoft discloses] continues to grow.

When you open Task Manager, you may see Rundll32.exe entry in the Processes tab. Or, you may also encounter a rundll32.exe error at shutdown. Rundll32.exe is a valid system file which executes a DLL. The actual command may be Rundll32.exe filename.xxx, <function>, whereas Task Manager reports only the command name and not it's parameter.

How Rundll Works

Rundll performs the following steps:

1. It parses the command line.
2. It loads the specified DLL via LoadLibrary().
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The Windows XP tool Tasklist can be used to determine what program modules are currently being executed by rundll32.exe. (For discussion of Tasklist, go to this page.) To create a list of running tasks, open a Command Prompt window and enter the following command:

Build numbers have been flying around like crazy as usual but Windows 7 Build 7105 has had many fans scratching their heads over. According to Neowin, Build 7105 is an RC build. The build string is  6.1.7105.0.090404-1235_x86fre_client_en-us_Retail_Ultimate-GB1CULFRER_EN_DVD and the build was compiled on April 4th. According to some screenshots Faikee found, this may very well be the case. The following screenshot was found by Faikee from our forums: