Kentico 8 error logout when move up, move down node in admin

Hi, we will be more than happy to help you, but we will need you to include more information first, because now it's really hard to say...

1. Are you just logged out or is there an error message in the Event log?
2. Are there multiple editors at the same time? (possibly using the same user account)
3. Does it happen every time you do that or just intermittently?
4. What kind of authentication do you use? Windows/Forms/Mixed mode?
5. Which version of Kentico are you using? (8.0, 8.1, 8.2.14?)
6. How exactly are you moving the nodes in the content tree? (drag&drop? context menu?)

Hi, When i edit or move document up or down in node order then error logout and continuity, in event log

Event ID: 131505
Event type: Information
Event time: 9/8/2015 2:30:05 PM
Source: Authentication
Event code: AUTHENTICATIONSUCC
User name: administrator

I used CMS version: 8.1 Build: 8.1.17


all users are logged on error

Thanh, this is not an error, this is an information message that the user named "administrator" successfully logged into the system and it is not related to moving documents ;-)

hi Lukas, when I moved up and down the document to logout error, I must sign in again and continue to edit the error again logout error, every move up or move down to logout error. error event log on i copy wrong.

help me !

Help

Message: 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.

See http://go.microsoft.com/fwlink/?LinkID=314055 for more information.

Exception type: System.Web.HttpException Stack Trace: at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString, Purpose purpose) at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter2.Deserialize(String serializedState, Purpose purpose) at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter2 formatter, String serializedState, Purpose purpose) at System.Web.UI.HiddenFieldPageStatePersister.Load() at System.Web.UI.Page.LoadPageStateFromPersistenceMedium() at System.Web.UI.Page.LoadAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) at System.Web.UI.Page.ProcessRequest(HttpContext context) at ASP.cmspages_logon_aspx.ProcessRequest(HttpContext context) in c:\windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\7aedd84d\4e411a83\App_Web_logon.aspx.67ab7734.mwnrdqme.0.cs:line 0 at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Message: Invalid viewstate. Client IP: 115.76.166.0 Port: 11305 ................

Have you checked the article mentioned in the error message? http://go.microsoft.com/fwlink/?LinkID=314055

I'd guess that you are using multiple instances of Kentico behind a net load balancer and have a different machine key in the web.config files. If it's your case, you need to use the same Machine key for all the instances!

It also could be caused by restarting the Application pool so I'd recommend checking the settings of your Application pool in the IIS.