I run into this error frequently when working on websites: 'Validation of ViewState MAC Failed'. In almost all cases, it happens when you load a page that has dynamically-generated controls (like a dropdown list that is populated by a database), and then try to use those controls after a long period of inactivity.
It happens so much, and with such reproducible results that I'm left wondering if I'm missing something simple in how I code things... Is there a simple cause for this that I'm just missing? How do I fix errors like this?
- Asp.net Apps V4.0.30319 Viewstate Mac Validation Failure Counter Test
- Asp.net Apps V4.0.30319 Viewstate Mac Validation Failure Countertops
- Asp.net Apps V4.0.30319 Viewstate Mac Validation Failure Counter Download
Asp.net Apps V4.0.30319 Viewstate Mac Validation Failure Counter Test
Jul 09, 2017 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. Why i’m seeing Validation of viewstate MAC failed. 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. Aug 12, 2011 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. Description: An unhandled exception occurred during the execution of the current web request. May 07, 2014 A few months ago, we posted that we were making changes to the way EnableViewStateMac behaves in ASP.NET. I’ll forego the typical blog post ceremony and cut right to the chase: starting with ASP.NET 4.5.2, the runtime enforces EnableViewStateMac=true.
Asp.net Apps V4.0.30319 Viewstate Mac Validation Failure Countertops
Asp.net Apps V4.0.30319 Viewstate Mac Validation Failure Counter Download
- Oct 04, 2011 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. Description: An unhandled exception occurred during the execution of the current web request. Please review the.
- Jun 11, 2010 When it restarts, it creates a new encryption key (this is the default behavior), which then of course can't be used to decrypt anything encrypted by the previous key (like ViewState).