Hello, all!
I started to develop my application with ASP.Net 2.0 and got the strange
behavior with pages, where user change any form control (i.e. checkbox,
button, etc.).
Ex.: when I clicked on button - page is not submit (postback);
if I create dropdown box with AutoPostBack = true, or change button property
to UseSubmitBehavior = false,
I get error (only in IE!):
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.
But, all my pages perfectly worked in Firefox!!!
After researching, I founded solution for that: add to web.config file
section :
<pages enableViewStateMAC = "false" />
BUT, I still get same error :(
Environment: Windows XP Pro with Framework 1.1/2.0 installed, Visual Studio
2005, local IIS.
Please, any help !!!!
Best regards,
Sergej Grickov.
Kaunas, Lithuania. 3 3387 http://support.microsoft.com/default...b;en-us;555353 see this link
--
Regards,
Alvin Bruney [MVP ASP.NET]
[Shameless Author plug]
The Microsoft Office Web Components Black Book with .NET
Now Available @ www.lulu.com/owc
Forth-coming VSTO.NET - Wrox/Wiley 2006
-------------------------------------------------------
"Sergej Grickov" <se****@ekb.lt> wrote in message
news:#5**************@TK2MSFTNGP15.phx.gbl... Hello, all!
I started to develop my application with ASP.Net 2.0 and got the strange behavior with pages, where user change any form control (i.e. checkbox, button, etc.).
Ex.: when I clicked on button - page is not submit (postback); if I create dropdown box with AutoPostBack = true, or change button
property to UseSubmitBehavior = false, I get error (only in IE!):
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.
But, all my pages perfectly worked in Firefox!!!
After researching, I founded solution for that: add to web.config file section : <pages enableViewStateMAC = "false" /> BUT, I still get same error :(
Environment: Windows XP Pro with Framework 1.1/2.0 installed, Visual
Studio 2005, local IIS.
Please, any help !!!!
Best regards, Sergej Grickov.
Kaunas, Lithuania.
Thank you, Alvin!
BTW, today I tried same project with same environment on another PC (my home
PC), and all works OK!
Seems, that my home PC's and local IIS (Windows XP SP2) has another
settings: another antivirus program,
another firewall settings and, maybe, something yet...
Thank you for help.
Best regards,
Sergej Grickov.
"Alvin Bruney - ASP.NET MVP" <www.lulu.com/owc> wrote in message
news:uo**************@TK2MSFTNGP09.phx.gbl... http://support.microsoft.com/default...b;en-us;555353 see this link
-- Regards, Alvin Bruney [MVP ASP.NET]
[Shameless Author plug] The Microsoft Office Web Components Black Book with .NET Now Available @ www.lulu.com/owc Forth-coming VSTO.NET - Wrox/Wiley 2006 ------------------------------------------------------- "Sergej Grickov" <se****@ekb.lt> wrote in message news:#5**************@TK2MSFTNGP15.phx.gbl... Hello, all!
I started to develop my application with ASP.Net 2.0 and got the strange behavior with pages, where user change any form control (i.e. checkbox, button, etc.).
Ex.: when I clicked on button - page is not submit (postback); if I create dropdown box with AutoPostBack = true, or change button property to UseSubmitBehavior = false, I get error (only in IE!):
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.
But, all my pages perfectly worked in Firefox!!!
After researching, I founded solution for that: add to web.config file section : <pages enableViewStateMAC = "false" /> BUT, I still get same error :(
Environment: Windows XP Pro with Framework 1.1/2.0 installed, Visual Studio 2005, local IIS.
Please, any help !!!!
Best regards, Sergej Grickov.
Kaunas, Lithuania.
For the record, there can also be other causes for the error:
ASP.NET 2.0 and "Validation of ViewState Mac failed" exception http://aspadvice.com/blogs/joteke/ar.../02/15011.aspx
--
Teemu Keiski
ASP.NET MVP, AspInsider
Finland, EU http://blogs.aspadvice.com/joteke
"Sergej Grickov" <sg***@takas.lt> wrote in message
news:OJ**************@TK2MSFTNGP10.phx.gbl... Thank you, Alvin! BTW, today I tried same project with same environment on another PC (my home PC), and all works OK! Seems, that my home PC's and local IIS (Windows XP SP2) has another settings: another antivirus program, another firewall settings and, maybe, something yet...
Thank you for help. Best regards, Sergej Grickov.
"Alvin Bruney - ASP.NET MVP" <www.lulu.com/owc> wrote in message news:uo**************@TK2MSFTNGP09.phx.gbl... http://support.microsoft.com/default...b;en-us;555353 see this link
-- Regards, Alvin Bruney [MVP ASP.NET]
[Shameless Author plug] The Microsoft Office Web Components Black Book with .NET Now Available @ www.lulu.com/owc Forth-coming VSTO.NET - Wrox/Wiley 2006 ------------------------------------------------------- "Sergej Grickov" <se****@ekb.lt> wrote in message news:#5**************@TK2MSFTNGP15.phx.gbl... Hello, all!
I started to develop my application with ASP.Net 2.0 and got the strange behavior with pages, where user change any form control (i.e. checkbox, button, etc.).
Ex.: when I clicked on button - page is not submit (postback); if I create dropdown box with AutoPostBack = true, or change button property to UseSubmitBehavior = false, I get error (only in IE!):
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.
But, all my pages perfectly worked in Firefox!!!
After researching, I founded solution for that: add to web.config file section : <pages enableViewStateMAC = "false" /> BUT, I still get same error :(
Environment: Windows XP Pro with Framework 1.1/2.0 installed, Visual Studio 2005, local IIS.
Please, any help !!!!
Best regards, Sergej Grickov.
Kaunas, Lithuania.
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