Although this article offers a hotfix,
this hotfix does not fix View State data errors. This hotfix only provides additional information to help you
troubleshoot View State data errors.
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft .NET Framework 1.0 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the
Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name
--------------------------------------------------------------
11-Dec-2003 07:13 1.0.3705.478 200,704 Aspnet_isapi.dll
11-Dec-2003 07:06 4,169 Aspnet_perf.h
11-Dec-2003 07:14 513,302 Aspnet_perf.ini
11-Dec-2003 07:14 510,714 Aspnet_perf2.ini
11-Dec-2003 07:14 1.0.3705.478 24,576 Aspnet_regiis.exe
11-Dec-2003 07:14 1.0.3705.478 28,672 Aspnet_wp.exe
11-Dec-2003 06:27 1.0.3705.478 69,632 Corperfmonext.dll
17-Jun-2003 21:43 16,597 Installpersistsqlstate.sql
17-Jun-2003 21:43 17,331 Installsqlstate.sql
09-Sep-2003 00:28 17,807 Installsqlstatetemplate.sql
11-Dec-2003 06:25 1.0.3705.478 303,104 Mscorjit.dll
11-Dec-2003 23:48 1.0.3705.478 1,953,792 Mscorlib.dll
11-Dec-2003 06:18 10,284 Mscorlib.ldo
11-Dec-2003 06:26 1.0.3705.478 2,273,280 Mscorsvr.dll
11-Dec-2003 06:26 1.0.3705.478 2,269,184 Mscorwks.dll
11-Dec-2003 07:10 1.0.3705.478 20,480 Perfcounter.dll
23-Aug-2002 02:23 15 Smartnav.htm
30-Jul-2003 00:04 8,728 Smartnav.js
11-Dec-2003 23:48 1.0.3705.478 1,179,648 System.data.dll
11-Dec-2003 23:48 1.0.3705.478 1,695,744 System.design.dll
11-Dec-2003 23:48 1.0.3705.478 1,175,552 System.dll
11-Dec-2003 23:48 1.0.3705.478 241,664 System.messaging.dll
11-Dec-2003 23:48 1.0.3705.478 311,296 System.runtime.remoting.dll
11-Dec-2003 23:49 1.0.3705.478 131,072 System.runtime.serialization.formatters.soap.dll
11-Dec-2003 23:48 1.0.3705.478 1,200,128 System.web.dll
11-Dec-2003 23:48 1.0.3705.478 507,904 System.web.services.dll
11-Dec-2003 23:50 1.0.3705.478 1,994,752 System.windows.forms.dll
11-Dec-2003 07:20 16,632 System.windows.forms.ldo
11-Dec-2003 07:15 1.0.3705.478 57,344 System.windows.forms.tlb
11-Dec-2003 23:50 1.0.3705.478 1,302,528 System.xml.dll
11-Dec-2003 23:47 1.0.3705.478 32,768 Tlbimp.exe
17-Jun-2003 21:43 1,419 Uninstallpersistsqlstate.sql
09-Sep-2003 00:28 2,119 Uninstallsqlstatetemplate.sql
11-Dec-2003 23:47 1.0.3705.478 65,536 Wsdl.exe
Hotfix details
This hotfix causes the View State error messages to contain more
information. After you apply this hotfix, the View State error message title
becomes "Unable to Validate Data." Although the new error message format does
not describe exactly what the problem is, it provides more information than the
earlier message format.
Note To obtain more information about the status of your View State
data, you can run the View State information that appears in the error message
through a third-party View State decoder.
This hotfix sets the
InnerException property on the
HttpException object so that you can use the
Application_Error method to log the underlying exception. Make sure that you
recursively log all
InnerException property errors.
This hotfix adds the following specific
information about the client to the error message for View State errors:
- IP address
- Port number
- User-Agent
- Value of the View State
- Http-Referer
- Path of the requested page
If the error occurs while ASP.NET is verifying the View State
message authentication code (MAC), this hotfix adds a message in the stack
trace that prompts you to verify the <machineKey> settings. The error
message also notes that the View State data can only be posted back to the same
page.
If the error occurs during deserialization, this hotfix adds the
LosFormater token, the _deserializationData token, and the position where the
error occurred to the error message.
In most cases, if the View State
data has been truncated, the View State feature will experience a
FormatException error in the
FromBase64String method and you will receive the following error message:
Invalid length for a Base-64 char array
However, if the
View State data has been truncated and is still base64-encoded, the error will
occur later in the code.
View State error message before you install this hotfix
Server Error in '/ViewState'
Application.
--------------------------------------------------------------------------------
The
viewstate is invalid for this page and might be corrupted.
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:
The viewstate is invalid for this page and might be corrupted.
Source
Error:
An unhandled exception was generated during the execution of
the current web request. Information regarding the origin and location of the
exception can be identified using the exception stack trace
below.
Stack Trace:
[HttpException (0x80004005): The
viewstate is invalid for this page and might be corrupted.]
System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +151
System.Web.UI.Page.LoadPageViewState() +18
System.Web.UI.Page.ProcessRequestMain() +423
View State error message after you install this hotfix
Server Error in '/ViewState'
Application.
--------------------------------------------------------------------------------
Unable
to validate data.
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: Unable to validate
data.
Source Error:
An unhandled exception was generated
during the execution of the current web request. Information regarding the
origin and location of the exception can be identified using the exception
stack trace below.
Stack Trace:
[HttpException (0x80004005):
Unable to validate data.]
System.Web.Configuration.MachineKey.GetDecodedData(Byte[] buf, String
strModifier) +866
System.Web.UI.LosFormatter.Deserialize(String input)
+44
[HttpException (0x80004005): Authentication of viewstate failed.
1) If this is a cluster, edit <machineKey> configuration so all servers
use the same validationKey and validation algorithm. AutoGenerate cannot be
used in a cluster. 2) Viewstate can only be posted back to the same page. 3)
The viewstate for this page might be
corrupted.]
System.Web.UI.LosFormatter.Deserialize(String input)
+102
System.Web.UI.Page.LoadPageStateFromPersistenceMedium()
+101
[HttpException (0x80004005): The viewstate is invalid for this
page and might be corrupted.
Client IP: 127.0.0.1
Port:
1095
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET
CLR 1.0.3705)
ViewState:
dDwzNDM3NTkwMzg7dDw7bDxpPDEPGk8MT47PjtsPHQ8QDA8cDxwPGw8RGF0YUt
Http-Referer:
http://localhost/Connect2Access/WebForm1.aspx
Path:
/connect2access/webform1.aspx.]
System.Web.UI.Page.LoadPageStateFromPersistenceMedium()
+435
System.Web.UI.Page.LoadPageViewState() +16
System.Web.UI.Page.ProcessRequestMain() +439
The
ViewState value in this sample error message has been truncated to fit the
context of this article.