Http Error 500.0 Aspnet_filter.dll
by: ASPOSE - the market leader of .NET and Java APIs for file formats – natively work with DOCX, XLSX, PPT, PDF, images and more Rick Strahl @RickStrahl Posts - 1080 Comments - 13815 RSS Feed Rick's Sites Rick's GitHub Projects Rick's FoxPro Web Log West Wind Message Board CodePaste.net GeoCrumbs.net Rick's Products Markdown Monster WebSurge Html Help Builder Web Monitor Find this content useful? Consider making a small donation to show your support. Tweets by @RickStrahl Error on 64 Bit Install of IIS – LoadLibraryEx failed on aspnet_filter.dll April 04, 2011 - from Maui, Hawaii 25 comments Tweet I’ve been having a few problems with my Windows 7 install and trying to get IIS applications to run properly in 64 bit. After installing IIS and creating virtual directories for several of my applications and firing them up I was left with the following error message from IIS: Calling LoadLibraryEx on ISAPI filter “c:\windows\Microsoft.NET\Framework\v4.0.30319\aspnet_filter.dll” failed This is on Windows 7 64 bit and running on an ASP.NET 4.0 Application configured for running 64 bit (32 bit disabled). It’s also on what is essentially a brand new installation of IIS and Windows 7. So it failed right out of the box. The problem here is that IIS is trying to loading this ISAPI filter from the 32 bit folder – it should be loading from Framework64 folder note the Framework folder. The aspnet_filter.dll component is a small Win32 ISAPI filter used to back up the cookieless session state for ASP.NET on IIS 7 applications. It’s not terribly important because of this focus, but it’s a default loaded component. After a lot of fiddling I ended up with two solutions (with the help and support of some Twitter folks): Switch IIS to run in 32 bit mode Fix the filter listing in ApplicationHost.config Switching IIS to allow 32 Bit Code This is a quick fix for the problem above which enabl
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‘C:\Windows\Microsoft.NET\Framework\v4.0.30319\\aspnet_filter.dll' could not be loaded due to a configuration problem Posted on November 18, 2012 by Brendan in Server Administration, WindowsProblemAfter monthly server patching, https://sysadminspot.com/server-administration/isapi-filter-cwindowsmicrosoft-netframeworkv4-0-30319aspnet_filter-dll-could-not-be-loaded-due-to-a-configuration-problem/ I also made some security enhancements to the web.config http://onoffswitch.net/fixing-calling-loadlibraryex-on-isapi-filter-v4-0-30319aspnet_filter-dll-failed/ files in the C:\Windows\Microsoft.NET\FrameworkXX\vXXX\CONFIG\ directories. It was therefore important that I test both 32bit and 64bit application pool modes. I found that tests running 64bit mode were suddenly failing with the following error message:ISAPI Filter ‘C:\Windows\Microsoft.NET\Framework\v4.0.30319\\aspnet_filter.dll' http error could not be loaded due to a configuration problem. The current configuration only supports loading images built for a AMD64 processor architecture. The data field contains the error number. To learn more about this issue, including how to troubleshooting this kind of processor architecture http error 500.0 mismatch error, see http://go.microsoft.com/fwlink/?LinkId=29349.It was of no surprise what so ever that the link included in the error message was 100% useless (thanks again Microsoft). One article I found suggested I uninstall .NET 4 - that's like turning a monitor off to fix a dead pixel.SolutionUpon closer inspection of the error message I noticed the problem:v4.0.30319\\aspnet_filter.dllWindows doesn't handle double slashes very well as opposed to Linux. What is strange is none of these settings are manually changed which suggests it was perhaps a Windows update that caused this, however I have no evidence beyond change control logs.I fixed with the following process:Opened IIS Manager and selected the IIS web server node:In the middle pane, browse to the IIS section and select ISAPI Filters:Expand the columns as required, looking for an Executable pat
ran into this adding a new site to my 64 bit machine, and because I haven't had my morning coffee, I forgot to set "enable 32 bit applications" in the app pool. If your code is built for 32 bit only (maybe you use mixed mode dll's somewhere or call into native and can't be 64 bit for whatever reason), make sure the app pool of your application is set to 32 bit mode. Otherwise, you get the very descriptive error shown above. Share this:EmailTwitterRedditFacebook Related Written by Anton Kropp Posted in Snippets Tagged with 64 bit, iis 26 comments May 15, 2013 - 5:22 am Dan Thanks! Very helpful! :-) Reply June 11, 2013 - 11:47 pm sampath Thanks for the posting.. finally found the solution ;) Reply June 25, 2013 - 6:41 am Nebur Very useful! Thanks! Reply August 28, 2013 - 9:12 pm Arthur thanks! Reply September 23, 2013 - 9:50 pm frinkfree Although your solution fixes the immediate problem, I think the root cause of the error is the extraneous backslash near the end of the ISAPI filter entry "C:\Windows\Microsoft.NET\Framework\v4.0.30319\\aspnet_filter.dll". Changing this value to "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_filter.dll" will fix the error reported by IIS. Reply July 10, 2014 - 7:09 pm thanks frinkfree removing the extra slash fixed the issue. I needed 32bit application set to false. Reply February 25, 2016 - 6:48 am Harjeet Awesome , its work Reply April 16, 2016 - 1:59 pm Guest This is the best solution! It's simple. And genius! Reply October 18, 2013 - 10:39 am Nirav Thanks appreciate your sharing of knowledge. It has resolved my issue. Reply October 30, 2013 - 7:09 am Waleed Alsharkawy Thanks a lot , you really save my time ,problem solved. Have a good day and good luck Reply January 16, 2014 - 2:32 pm Julian Schlotterbeck Thanks, was looking for this for a while! Helpful! Reply March 5, 2014 - 11:46 am Parmesh thanks a lot. you saved my time. Reply June 12, 2014 - 10:19 am Sunsoft Infoway valuable and useful sharing Thank so much Reply July 2, 2014 - 12:10 pm RahulM Thanks… Its works… Reply July 10, 2014 - 12:03 pm Şeyda Yılmaz Thank you very much! Reply July 22, 2014 - 7:49 am Php Development Company great post, thx for the information.. Reply October 21, 2014 - 2:59 pm Rickkee What causes that extra \\ to appear. Just default load, did not edit it, but with .net update, the \\ appears and wacked the site. Thanks for the answer, it worked beautiful after 14 hours of troubleshooting, should have come here first! Reply March 3, 2015 - 7:52 pm Tamil Sooner Worked.