Security - Getting Message When Run The Application - Assembly Does Not Allow Partially Trusted Callers
Apr 28, 2009
Out of 70 users of my application 2 are getting the following message when they to run the application... That assembly does not allow partially trusted callers. The reason for the error is that by default .net applications run from a network location have limited permissions. You need to use caspol.exe to add the network folder where your application is being run from to the Trusted Zone. If you do a search on these forums you will find plenty examples of how to do this. It is fairly simple. It will have to be done on every machine that will be running the application and a simple cmd file can be made to do this. The only difference is that I've asked our service desk to install the application to the local C drive which I believe they did.
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Mar 26, 2012
i am devloping app in vb.net and ms sql express compact 2005 .evrything works well. but when i used a third party dll file report viewer and one from skineengine system give me the error"assembly does not allow partialy trusted callers".
at first when i used report viewer it works,but letter it throw me error,same for skineengine. so that is the case of disallowing third party custom dll files.
i even set <Assembly: AllowPartiallyTrustedCallers()> in assemmbly.info
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Oct 27, 2009
I have a VB.NET application that I wish to store on a shared server. It is a GUI application that also calls a few external .dll's. I'm running into an error message that says "That Assembly Does Not Allow Partially Trusted Callers". I've seen several posts that mention I should add the following line to my AssemblyInfo.vb file:
<Assembly: AllowPartiallyTrustedCallers()>
This still doesn't seem to solve the problem. Anyone know what to do? I'm hoping to compile and store the .exe on the server for other users to access.
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Dec 19, 2009
I am trying to use the Web Browser control in my vb .net user control. I am using VS 2008. Finally, I will be calling my assembly (.dll) from a web page. I wanted to display the usercontrol with the web browser control inside this web page. The problem is I cannot proceed since the Web browser control cannot be called from a partially trusted assembly. Using VS 2008 I have created a strong name for my class, also added the <Assembly: AllowPartiallyTrustedCallers()> to the AssemblyInfo. But still the web browser control cannot be seen in my web page. Do you how I can make my assembly fully trusted so that it can access web browser control? If you have used web browser control, can you confirm if this step is really required?!
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Jan 23, 2012
vb.net applications that runs at the client-side work in unsecured environment, these applications connects to a mysql database server so... it contains the username and the password of the mysql database in the connection-string in the application itself.isn't there any way to digitally sign my applications so the database server only accepts the requests from the trusted applications?I want to this to prevent the hackers from hijacking my database
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Oct 21, 2011
Or in another way of understanding how to bypass the firewall of Windows in VB.NET?
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Mar 11, 2010
Assume a .NET class library code that, for example, writes to the Windows registry. Then this code has problem to run over internet, because default Internet policy does not give access to write to the registry.By adding a RequestMinimum statement in the assembly we can specify that the code requires permission to write to write to the registry. This will not alter the fact that the code does not have the permission, but will stop the assembly from loading; the runtime will throw a System.Security.Policy.PolicyException and identify the permission that is required.Do you now any other examples of using evidence, security policy and permissions (the key elements of code-access security) to prevent an assembly from loading on a web server?
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Sep 13, 2010
I have one project created with VB 6.0. Step to reproduced this issue,
1. Start Internet explorer and add the site "[url]" to trusted site. now set protected mode check box to Off for the trusted site zone.
2. Open the Visual Basic 6.0 and created standard Exe project.
3. From Tools -> references add "Microsoft Internet Controls".
4. Copy and Paste below code. [Code]
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Mar 31, 2009
I have made an simple application (.exe). When i run this program local on my machine it works fine. When i run it from an server i get the system.security.securityexception message.
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Jan 20, 2010
Attached File(s) project.doc (34K) Number of downloads: 72 project.doc (34K)Number of downloads: 48
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Mar 24, 2011
I have a VB project using VS 2008 Pro that I have been working on my Win XP SP3 PC for a while now. I am now moving to a different PC with Win 7, 32 bits. I installed VS2008 and VS2010 (also Pro) on the new PC. The source is stored on a server on our network. When I tried to open the project with VS2008 on the new Win 7 I got the following message:The project location is not trusted:
\DevServerProjectsSysMon Running the application may result in security exceptions when it attempts to perform actions that require full trust.I then click Ok and another dialog comes up mentioning:This project includes a password-encrypted key used for signing. Enter the password for the key file to import the key file into the local cryto-store databse for use.The dialog lists a pfx file. Why is it requiring this?
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Nov 4, 2009
When I open VB projects in Visual Studio 2005 and attempt to view a form view designer I have started getting "File Download - Security Warning" Message prompting a .tmp file in the location of my project. If I close all open designers and rebuild the project I am then able to open the designers OK.I saw a suggestion to 'restore file associations' in Visual Studio and tried this but with no success.
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Jul 22, 2005
I have an application installed on my local disk.This application runs with FullTrust privileges.I'm trying to load an assembly giving it FullTrust (same privileges of the loader).My assembly is located on a network share.I'm actually using this code but I get a security exception:
An exception of type 'System.IO.FileLoadException' occurred in mscorlib.dll and wasn't handled in the appdomain it was thrown fromAdditional information: Could not load file or assembly 'Main, Version=2.2.2029.19859, Culture=neutral, PublicKeyToken=2244f6f9e95cedae' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT:
[code]....
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Jun 30, 2011
I've created a usercontrol containing two datagridviews, and a splitter column. When I am using the grid in my forms, I am able to interact with all of the objects on the usercontrol, but I would like to prevent this being being the case. How would I go about doing this?
I originally tried to create a class that inherited datagridview, so that I could extend it, but I couldnt see how to do what I wanted (my control has a column picker in one panel, and a data grid in the second panel).
I also tried to just create a basic class, and Dynamically create the objects I needed. But I would like the users to have virtually full control over the data grid, but only limited (specifically coded) control over the column picker, or the splitpanel controls)
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Dec 17, 2010
I want to use PKI public and private encryption for authentication to allow for a more streamlined and secure application access control system. Any help in the generation of certificate and authentication will be useful. One more question, can i use System.Security.Cryptography.X509Certificates class for the same?
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Jan 29, 2011
I am developing and application in vb.net winxp+ (windows xp upwards). The application has to receive backup data from clients software located at different pc over the Internet. but am concerned about security of this application on the Internet. what would be the best way to implement security in vb.net 2008 to make sure that the data is not sniffed or interfere with?
am thinking of encrypting the data before sending, saving it that way until it need to be viewed before decrypting. what type of encryption would you suggest? Is there any other way you would suggest this data be sent?
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Feb 8, 2012
im finish my application and im finish ex�cutable the my application. and my question he's, if posible somebady want open my executable the my application with vb.2008.is that posible
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Jan 23, 2010
What kind of security has to be built into the application if it is connecting to a remote database server, mail server, on the company network/over a WAN?
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Jun 21, 2011
I wish to add refrence with a dll file.But it fail,it show message 'Make sure dll file is valid assembly or COM component '.I also try use regsvr32 to register it,but also fail.
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Aug 18, 2009
I wish to implement some role based security in my application. Has anyone got any links with some usefull info on this subject.
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Oct 15, 2010
Through COM, one can potentially gain absolute control over a target system. For example: using javascript's ActiveXObject object in IE, one can create certain objects which were designed to have direct access or interaction with system properties and files.One would think common sense dictates users disable ActiveX features in IE immediately after installing the browser to ensure their system is protected while surfing the net, or at least paying close attention to which websites they permit. But, I doubt many average PC users know how or why to do this, or just get tired of mirco-managing it over time. I think any PC user or admin my COM class caters to would greatly appreciate not having to deal with that. Thankfully it looks like IE versions come packaged with ActiveX disabled by default nowadays.
I've built a very versatile COM class library in VB. I didn't intend for it to be callable from any website, but that feature is just part of the COM platform. I'd like to prevent the library from being called from IE unless the website is on a white-listed domain to proactively protect the user (and ultimately their entire intranet) from harm from malicious websites. What would be the best method in VB.Net to tell which application called my DLL, to be able to tell if it was called from any command or process originating from IE? And, what domain called my dll? System.Environment.GetCommandLineArgs()(0) gets me the calling application path. With this info, I can compare it to a black/white-list of applications.
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Jul 23, 2009
I have built a MVC website on IIS6. I used the built-in ASP.NET Security without Membership, just the way it was implemented in the template solution. It is easy to secure a contoller or action, but now I need to expose the user management to an admin logged into the site. I understand that the builtin ASP controls for doing this are not "best practice" and are a dog to get working. So what is the best practice for offering user management through a ASP.NET MVC application?
I considered using the Entity Framework and wireing it up to the myriad of stored procs. but that seems awkward. I see options for AccountMembershipService and FormsAuthenticationService. That is what the existing project account controller uses. But, I am not fimilliar with either.I can't help but think that this should have already been there from the project template. This is a fundamental part of any website and you were given 15%, why not the rest?
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Jan 12, 2010
i created the following ActionFilterAttribute to check if a user is granted access to a page. I also created two custom Exceptions to handle different scenarios: NotLoggedInException and InsufficientPrivilegeException.
[Code]...
Where do I catch the exceptions to for instance redirect users if not authorized?Should I perhaps use the SiteMap authorization somewhere else instead of using the ActionFilterAttribute and throwing Exceptions..?
note: as you can see I'm using a custom class for BLL.Page. This is a ORM page which has Role based security stored in the database. SiteMap is also populated based on this data
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Mar 5, 2012
We are in the process of upgrading to WIN7 support and finding issues with the existing impersonant security model we previously used. So i am looking for suggestions before we hit the code.Application ABC.exe is running on a PC with restricted permissions
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Sep 27, 2011
When I try to run my DLL in Autocad, I got the message below.Application attempted to perform an operation not allowed by the security policy. To grant this application the required permission, contact your.I know there are many threads on this error, but Im not sure about one thing.Can I resolved this on our FilesServer or I have to do something on each computers that will use the DLL ?
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Jun 10, 2011
Counting days independent of system calander ?
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Jun 10, 2011
I want to add a feature to my trial version of the application. After first activation, I want to make it limited to 90 days. But I am concerned about user's changing the date of system hence deceiving my application. Is there any possibility to make it fool proof in a way that even if user takes the calender back, application expires after 90 days of first activation? First activation date has been saved in the database.
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Sep 5, 2011
I need to implement, Controls Based Security in a Windows Forms Application using VB.NET. I tried google but did not get anything much to work with.
I would like if someone, could suggest some books or tutorials.
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Jun 10, 2010
This error occurs when I want to add my app to the startup keys
My.Computer.Registry.LocalMachine.OpenSubKey("SOFTWAREMicrosoftWindowsCurrentVersionRun", True).SetValue(Application.ProductName, app)
[code].....
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Jul 13, 2009
When I go to my project properties I can see the Assembly Name under the Application tab. Now if I click the Assembly Information button I see some other settings such as title, description, company, etc. I can get the name by doing: Assembly.LoadFile("c:\filepath").GetName().Name.ToString()My question is how can I get the title, description, company, etc. I have tried a few things but nothing seems to work. Also I was told that you can create custom settings. How would you do this and how would you access them?
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