I am using plesk'shared hosting server to host my website. Constantly getting ViewState MAC failed error
Plesk won't be able to provide any Machine Key. As it is shared hosting.
I have also attached the screenshot. please help.
Earlier This issue was coming in one page only. I have resolve it by converting it to JavaScript and ajax call in order to Stop AutoPostBack.
But now this is coming in many pagaes.
Add following link in your web.config file.
Above line should be included within section.
OR
if you don't want this solution to implemented on project level then you can add these attribute to the page(Top most line of HTML view) directive of the page which is creating issue.
That means you have to add enableEventValidation="false" viewStateEncryptionMode="Never" in page directive.
Related
I'm new with this code (Telerik ASP AJAX) there was another guy who is not here anymore, so we can't ask him to help..
There is a page with simple questionary.. it has been working on previous WEB server (based on IIS Windows 7).
After we built the new PC we also installed Win_7 and the same IIS, but the Telerik Version might be freshier.
..
There is a main page with PlaceHolder (PH) with RadScriptManager.
Then, from another code, RadRotator is created and added as a Control to the PH.
..
During debugging everithing is Ok, I can see how the code creates all the elements, creates RadRotator with success, and then the created Rotator is successfully passed to PH container.
''
But at the end of the way there is no Rotator visible at the page.
..
And I can't see it's references to it's script on the page as well.
It should be like that:
<script src="http://some path/2016.3.914/Rotator/RadRotator.js" type="text/javascript"></script>
But there is no such state on the final page.
The IIS is set to Integrated Mode, not Classic. Also the App is under NET4.
Why generally that would be?
If the question is not clear, please, ask me for clarification.
Well, sorry, I forgot to report the answer..
The problem was that in new version
RadScriptManager
should be replaced with
ScriptManager
.
This may be caused by many things and this fix is strange.
Ensure the Telerik CDN is enabled so you get the URLs as you said you expect. You need the RadScriptManager for this
Ensure access to those scripts is provided in your network (monitor the network requests, ensure they return 200 or 304, speakwith your network admins otherwise)
Ensure you are using an official version and not an internal build, only official releases have CDN
if you are using webresource requests, add <location> elements to the web.config to allow anonymous access to the Telerik handlers that fetch the resources
I have a MS Chart component displaying fine on an ASP.Net page. When I deploy it I get a broken image. The settings in the web.config are the same and the temporary images folder has the correct permissions.
When I get the URL of the images I can see that the /.png file is not getting created.
What sort of things do I need to look at to track down the problem?
I was able to resolve the issue by ensuring that my application pool settings was using "ASP .net integrated" and not "ASP .Net Classic". This will ensure that your handler is being used.
I had the same problem when I was working with the charting in .NET 4 and my problem turned out to be related to the default value of the privateImages attribute and the fact that my code wasn't using any identifying attributes for the session or the user.
See my post here for an explanation of how I solved my problem.
It's also worth noting that the ASP.NET Development server ignores the config settings for charting and renders them in memory unless you specifically set an attribute to force it to use your config.
The following error occurs when my webpage is idle for more than 5 min.
Error: Sys.WebForms.PageRequestManagerServerErrorException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
Source File: http://www.dial4jobz.com/ScriptResource.axd?d=Xl5p0QQ_qaR3K9bIVhwC3LyqjOX_oAKyeLj_-uS5j1VoFExVtm3XAHiq64EGJt04xntLJvh-9y3pvN3dvKgg5b6sQwkFvX7GT4f0aKn7iyc1&t=73e6f815
Dono, wat is the cause of this error.. I'll open a web page and after 5 min when I'm accessing it, it is showing this sort of error.. I don't hav any clue that why this error occurs.. Plz, give me any idea???
use the below code and try
<pages validateRequest="false" enableEventValidation="false" viewStateEncryptionMode ="Never" />
if u need more info kindly refer the link below,
http://blogs.msdn.com/tom/archive/2008/03/14/validation-of-viewstate-mac-failed-error.aspx
http://forums.asp.net/p/955145/1173230.aspx
I had the same issue, this is the two solutions I found and that might help if you are not using a WebFarm:
1. Disable ViewState MAC
On your page (.aspx) #Page directive you can add the attribute EnableViewStateMac="false". By doing this that will disable the check and then the issue will goes away.
Unfortunately Microsoft doesn't recommend to do this for security reasons:
This attribute should never be set to false in a production Web site,
even if the application or page does not use view state. The view
state MAC helps ensure the security of other ASP.NET functions in
addition to view state.
Source: Microsoft
2. Check HTML
There is a bug in ASP.Net causing this issue when the "action" attribute is set in your <form> tag. For example:
<form runat="server" action="page.aspx">
By removing this attribute that will remove the issue, so you should now have something like:
<form runat="server">
Obviously this solution may raise other issues, it depends on your application. One big problem is when using Ajax to load pages.
3. Avoid ViewStates
In some cases when using Ajax it could be very easy to get rid of ViewStates. You can send Ajax requests to your server for performing operations and then display the result, no need to use a ViewState. By doing this you won't have an issue about the ViewState validation.
I also found other suggestions on those pages that might help you if what said above doesn't fix your problem.
Hai vaishu,
Have a look at this validation-of-viewstate-mac-failed-error
I want to go live with my site.
...but I need help with a security violation I am incurring.
I've seen various threads on this forum regarding a crossdomain.xml file to include and link to, but I don't get it... no matter what I try I still end up with the same result. You'll note below that it is not recommended to use crossdomain hacks.
FWIW, this only happens when I export a release build... I can load the php data w/out an issue in my debug/developing phase locally in Flex.
What gives? When I make a PHP based request for data I always get this error popping up:
Error #2044: Unhandled securityError:.
text=Error #2048: Security sandbox
violation:
http://alubow.com/jml_testing/viewable/alubow_project.swf
cannot load data from
http://www.alubow.com/jml_testing/foldergrab.php?ipath=assets/bitmap/portrait_thumbs/&tpath=assets/bitmap/portrait_imgs/.
at utils.php::DirectoryReader() at
alubow_project/newScroller() at
alubow_project/mainClickOut()
Is there code I need to add to get this to work? Do I need to configure the server I am using?
I will need to go live with this site soon and these errors I am getting both locally and serverside (via a browser) are unacceptable.
COULD THIS BE A PROBLEM WITH THE FLASH PLAYER I HAVE INSTALLED?
I have the debugger version of flash player 10.
jml
The problem is with the www prefix. I guess you are trying to load a page with out the www subdomain and the URL you are looking for does have that prefix.
Now, what you need to do is one of the following:
change the request url
add both www.yourdomain.com And yourdomain.com to the crossdomain.xml
call the url dymanicaly. this is the best solution but needs some more work. you can get it done using ExternalInterface and connection to JS here. OR you can use the BrowserManager.
Enjoy!
It may be because your app is requesting from www.alubow.com when hosted from alubow.com, which triggers a request for http://www.alubow.com/crossdomain.xml, which doesn't exist. You could refer to your app as www.alubow.com/jml_testing/viewable/alubow_project.swf and avoid the error.
Alternately, you could add a crossdomain.xml file to www.alubow.com.
I know this is weird but for local files loaded through the flash player you probably just need to hit this page. Look near the top right for something that looks like an example image. It's actually a Flex application. Click successive tabs until you read the Global Security Settings panel (currently 3rd from the left, with an image of a globe and padlock). Select the "Edit locations" menu, and choose "Add location". You can then add your swf or your folder of swf's into the whitelist and they'll be able to access outside resources magically.
Why when I access an aspx (e.g., http://www.example.com/foo.aspx - not the real site) through IE6 would I get a 404 Error (i.e., "The page cannot be found") in IIS6
I've got scripts enabled for the website and I've tried with executables enabled as well.
Here is the full error:
The page cannot be found
The page you are looking for might have been removed, had its name changed, or
is temporarily unavailable.
------------------------------------------------------------------------------
Please try the following:
Make sure that the Web site address displayed in the address bar of your
browser is spelled and formatted correctly.
If you reached this page by clicking a link, contact the Web site
administrator to alert them that the link is incorrectly formatted.
Click the Back button to try another link.
HTTP Error 404 - File or directory not found.
Internet Information Services (IIS)
------------------------------------------------------------------------------
Technical Information (for support personnel)
Go to Microsoft Product Support Services and perform a title search for the
words HTTP and 404.
Open IIS Help, which is accessible in IIS Manager (inetmgr), and search for
topics titled Web Site Setup, Common Administrative Tasks, and About Custom
Error Messages.
I can get to Default.htm in the same directory, so I know the path is right. I've opened it up to everyone (temporarily) so I know the permissions are right.
It could be a lot of things. I had this issue today because .NET had not been re-initialized after installing IIS (aspnet_regiis -i -enable or equivalent).
Check that the anonymous user under which the site runs has read access to the file foo.aspx.
IIS6 and later uses a 404 response, thereby not letting an attacker know whether such a file even exists.
I just happened to find another culprit for this issue. My foo.aspx page referenced a particular master page that had a <%# Register %> directive to a user control that did not exist. Removing the reference to the non-existent user control caused my foo.aspx to load instead of 404.
I found a solution here.
The real catch was using this:
Response.TrySkipIisCustomErrors = true;
The site is pointing to a different directory where the page is not.
It could be permissions, however I would think you would get an access error instead.
I'm assuming you are running IIS.
Check that www.example.com is going to the site that you think it is.
If you are hosting multiple sites on the same IP using host headers you may want to double check the name you are using is going to the site you think it is.
Ray and Joe probably have it. In order to serve any file type, IIS has to have a mapping for it. Aspx files require that they be mapped to the AspNet ISAPI dll, which the .Net installation normally takes care of. If you install IIS after .Net (and I'm sure there are other situations), you have to initiate this yourself by running aspnet_regiis.
ALTERNATE SOLUTION (same error perhaps different cause).
I had installed Visual Studio 2008 Pro without SQL Express it, and it caused this same error. Reinstallation of VS2008 with sql express included seemed to have corrected the problem, or perhaps the install took other actions. I did try to register ASP.net numerous times prior but no luck however it is definitely the most probable cause Just posting my experience for those pulling their hair as I was..
Thanks
If you register the .NET 4 version of IIS, you may find it's grabbed the registration of the aspx extension. If ASP.NET v4 is prohibited then 404 will be returned
I had this issue where some customers were reporting the 404.0 and some didn't have the problem at all(same page). I was able to navigate to any of the pages with no problems from my machine. Some customers would refresh and it would go away. I am using .Net 4.5.2 and IIS 7.5.
Looking at the IIS log file I would see:
sc-status sc-substatus sc-win32-status
404 0 2
sc-status.sc-substatus: 404.0 - Not Found
sc-win32-status: 2 - ERROR_FILE_NOT_FOUND
https://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx
https://en.wikipedia.org/wiki/HTTP_404
I found the problem was I had deployed a new version of the website in which the old version of the website had RouteConfig.cs/FriendlyUrlSetting setup by creating a project using the web forms template. The new version was created using an empty template. So obvious to me now.. no URL routing. Customers had a cache issue with certain pages on their machine(no .aspx extension) and having them clear browser data ultimately fixed the problem.
I got this issue when I tried using a different drive to host my apps. I ended up moving them to the wwwroot folder because it was working there and I did not have to time figure out why it is not working on the E:\ drive.
I had bin\roslyn compiler missing. Adding that all worked fine.
Check for double quote errors. I started getting a 404 on a single page because I accidentally had this:
<asp:TemplateField HeaderText="ImageURL"">
instead of this:
<asp:TemplateField HeaderText="ImageURL">
For an aspx page, error 404 can be quite misleading! I have seen all the answers and they presuppose assuming various issues with the file, page, path, etc. but the simplest issues is the fact that if there is an error in your asp page (i.e bad format, improper usage of control, etc. asp will think the page does not exist and will post a 404 when in all actuality, it is easy to ascertain if there is a bad format by simply clicking on design mode. If the page does not render no need to do anything else but look at what is causing the render error, fix and viola'! Your page shows since it was never missing or can't be found, but it simple did not know how to display! Too often people go looking for the wrong solutions and waste so much time! Hope this helps somone. :-)