ASPForums.Net RSS Feedhttp://www.aspforums.net/Handlers/RSS.ashxLatest additions to the content that appears on ASPForums.Net(c) 2019 www.aspforums.com. All rights reserved.ASP.Net Error: Validation of viewstate MAC failed<p>Hi <a class="username" rel="chetan"> chetan</a>,</p> <p>Please take reference the below link.</p> <h1 class="header"><a class="title f16" href="https://www.aspforums.net:443/Threads/163905/ASPNet-Error-Validation-of-viewstate-MAC-failed/">ASP.Net Error: Validation of viewstate MAC failed.</a></h1>https://www.aspforums.net:443/Threads/108417/ASPNet-Error-Validation-of-viewstate-MAC-failed/https://www.aspforums.net:443/Threads/108417/ASPNet-Error-Validation-of-viewstate-MAC-failed/Mon, 25 Jun 2018 02:27:36 GMTASP.Net Error: Validation of viewstate MAC failed<p>1.I used the&nbsp;<a href="http://aspnetresources.com/tools/keycreator.aspx">&lt;machineKey&gt; Generator Tool</a>&nbsp;to generate a machine key.</p> <p>The above link not working to generate machine key.</p>https://www.aspforums.net:443/Threads/108417/ASPNet-Error-Validation-of-viewstate-MAC-failed/https://www.aspforums.net:443/Threads/108417/ASPNet-Error-Validation-of-viewstate-MAC-failed/Mon, 25 Jun 2018 03:39:46 GMTASP.Net Error: Validation of viewstate MAC failed<p>This helped me to overcome with that issue:</p> <p>&nbsp;</p> <p>1.Open IIS------&gt;MachineKey-----&gt;Generate keys<br />2.Include the generated validation key and decryption key into the web.config.</p>https://www.aspforums.net:443/Threads/108417/ASPNet-Error-Validation-of-viewstate-MAC-failed/https://www.aspforums.net:443/Threads/108417/ASPNet-Error-Validation-of-viewstate-MAC-failed/Mon, 25 Jun 2018 06:22:09 GMT