After fixed my web.config with the POE Workaround on ASP.NET V3.5 SP1 and ASP.NET 4.0, in my log viewer I still have general exception:
AssemblyVersion: -1
PortalID: -1
PortalName:
UserID: -1
UserName:
ActiveTabID: -1
ActiveTabName:
RawURL:
AbsoluteURL:
AbsoluteURLReferrer:
UserAgent:
DefaultDataProvider:
ExceptionGUID:
InnerException: A critical ASP.NET Oracle Padding vulnerability has been identified in your website. We recommend that you patch your site immediately. For more information on this issue and instructions on how to patch your site refer to http://www.dotnetnuke.com/aspnetpoet.aspx
FileName:
FileLineNumber: -1
FileColumnNumber: -1
Method:
StackTrace:
Message: System.Security.SecurityException: A critical ASP.NET Oracle Padding vulnerability has been identified in your website. We recommend that you patch your site immediately. For more information on this issue and instructions on how to patch your site refer to http://www.dotnetnuke.com/aspnetpoet.aspx The Zone of the assembly that failed was: MyComputer
Source:
Nome server: VM0012

Why? I've fixed DNN web.config and installed all Microsoft Windows updating!

PS: make sure you've installed the MS Security Patches for all installed versions of .Net framework.

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Cheers from Germany,
Sebastian Leupold

   

Speed up your DNN Websites with TurboDNN

you shouldn't touch web.config, DNN 5.5.1 makes this change during install (and 5.6.0 will roll it back, I expect, haven't checked it yet).

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Cheers from Germany,
Sebastian Leupold

   

Speed up your DNN Websites with TurboDNN