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I'm trying to add the Ajax Control Toolkit v.NET35 to my toolbox in VS 2010. After I navigate to the AjaxControlToolkit.dll, I get a popup that reads "The security state of an AppDomain was modified by an AppDomainManager configured with the NoSecurityChanges flag."

I am running VS2010 as an administrator, and I have added the lines;

<NetFx40_LegacySecurityPolicy enabled="true"/>
<legacyCasPolicy enabled="true" />

to both my devenv.exe.config and web.config files, but to no avail.

I've searched and found quite a few people with this problem, but no resolution that works 100%.

Anyone else solved this one?

TIA Mike

Mike
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1 Answers1

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Try to login to DX account and upgrade your hotfix of the version 2008.3. This are fixed for people: Legacy Security Policy in Visual Studio 2010 and COM References

Community
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Marin Sagovac
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  • Is this caused by DevExpress 8.3? I didn't mention DX at all. I *do* have both DX 8.3 and 10.1 DLLs installed on my machine. Until recently, I had the 10.1 tools in my VS 2010 toolbox but they've disapppeared. But at any rate, I did download and re-install DX 8.3.8 and I'm still getting the same error. – Mike Mar 18 '13 at 16:19