Server Error in '/' Application · YAF.NET Support Forum

Gofer01
100% (Exalted)
YAF Commander Topic Starter

10 years ago

I getting this error


Server Error in '/' Application.

Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

Source Error: 


[No relevant source lines]

Source File: App_Web_0644y3bc.0.cs    Line: 0 

Stack Trace: 


[ViewStateException: Invalid viewstate. 
	Client IP: 174.28.100.188
	Port: 59005
	User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1
	ViewState: 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...]

[HttpException (0x80004005): Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.]
   System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +106
   System.Web.UI.ViewStateException.ThrowMacValidationError(Exception inner, String persistedState) +14
   System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) +237
   System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) +4
   System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) +37
   System.Web.UI.HiddenFieldPageStatePersister.Load() +207
   System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +105
   System.Web.UI.Page.LoadAllState() +43
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6785
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +242
   System.Web.UI.Page.ProcessRequest() +80
   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
   System.Web.UI.Page.ProcessRequest(HttpContext context) +49
   ASP.default_aspx.ProcessRequest(HttpContext context) in App_Web_0644y3bc.0.cs:0
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Version Information: Microsoft .NET Framework Version:2.0.50727.5446; ASP.NET Version:2.0.50727.5420

I have no clue on how to resolve this error. I can be anywhere in the forum and when I press the Enter key the above error comes up. Pressing F5 will not help. I have to press the back button then have to log in again.

Michael

My Website

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bbobb
100% (Exalted)
YAF Developer

10 years ago

Hi.

The problem is a well known one - simply make that the error screen tells you.add the section.

Best, bbobb.

Gofer01
100% (Exalted)
YAF Commander Topic Starter

10 years ago

Originally Posted by: bbobb

Hi.
The problem is a well known one - simply make that the error screen tells you.add the section.
Best, bbobb.

I don't understand. The only thing I understood was it's a well known error. Are you saying that I have to modify the web.config file? 😕 If so can you give me an example? 😕

Thanks

Michael

My Website

logan
100% (Exalted)
YAF Leader

10 years ago

Check out this post

http://forum.yetanotherforum.net/yaf_postsm41507_YAF-1-9-3-logging-out-users-automatically-after-4-minutes-of-idle-time.aspx#post41507

test

Gofer01
100% (Exalted)
YAF Commander Topic Starter

10 years ago

Originally Posted by: logan

Check out this post
http://forum.yetanotherforum.net/yaf_postsm41507_YAF-1-9-3-logging-out-users-automatically-after-4-minutes-of-idle-time.aspx#post41507

Logan wrote this about a year ago.

Try adding a machine key. Sounds like your app is getting recycled 
Are there any event log errors?? ie. ViewstateMAC Failed
3-4 minutes is very low, but depends on your hosting Co.

Get a random key here: Don't use the sample below
http://www.developmentno...chinekey_generator.aspx

That hyperlink he gave is out of date. I'm getting a 404 error clicking on the hyperlink

Edited by user 10 years ago | Reason: adding a image file

Michael

My Website

tha_watcha
100% (Exalted)
YAF.NET Project Lead 🤴 YAF Version: 3.0.3

10 years ago

Try that link instead...

http://lmgtfy.com/?q=asp.net+machine+key+generator

Gofer01
100% (Exalted)
YAF Commander Topic Starter

10 years ago

Thank you guy's for all of your support. 👍 Can you tell me how machine_key works?:?:

Michael

My Website

logan
100% (Exalted)
YAF Leader

10 years ago

check out this page in the msdn.

http://msdn.microsoft.com/en-us/library/ff649308.aspx

test

Gofer01
100% (Exalted)
YAF Commander Topic Starter

10 years ago

Everything appears to be working. So far I'm not getting ASP.NET errors. Furthermore I understand little about Machine.config security features

Michael

My Website

ravindu98
51.2% (Neutral)
YAF Forumling

a year ago

#10

I'm getting this error. I didn't try locally. I tried with azure. Can someone help me to fix this?

Capture.PNG You have insufficient rights to see the content.

tha_watcha
100% (Exalted)
YAF.NET Project Lead 🤴 YAF Version: 3.0.3

a year ago

#11

Originally Posted by: ravindu98

I'm getting this error. I didn't try locally. I tried with azure. Can someone help me to fix this?
Capture.PNG You have insufficient rights to see the content.

What error are you getting when you disable custom errors in the web.config?

ravindu98
51.2% (Neutral)
YAF Forumling

a year ago

#12

When custom errors are turned off, I get this message.

Capture.PNG You have insufficient rights to see the content.

tha_watcha
100% (Exalted)
YAF.NET Project Lead 🤴 YAF Version: 3.0.3

a year ago

#13

You didnt turn it off correctly. You need to set it like shown in the error message...


<system.web>
   <customErrors mode="Off" />
</system.web>

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