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POInvalid length for a Base-64 char array - System.Web.UI.ViewStateException: Invalid viewstate
 

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  1. POInvalid length for a Base-64 char array - System.Web.UI.ViewStateException: Invalid viewstate
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    <blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/858761/what-causing-this-invalid-length-for-a-base-64-char-array">What causing this &ldquo;Invalid length for a Base-64 char array&rdquo;</a> </p> </blockquote> <p>This error has been in our logs from time to time and various users experience it:</p> <pre><code>System.FormatException: Invalid length for a Base-64 char array. System.Web.HttpException: The client disconnected. ---&gt; System.Web.UI.ViewStateException: Invalid viewstate. ViewState: 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... ---&gt; System.FormatException: Invalid length for a Base-64 char array. </code></pre> <p>One user reported to have experienced the error when he was searching for customer details, which normally pulls data from a web service. He noticed that the list wasn't being generated and kept on pressing search and at the third time, he got our global error message. I checked the logs and got the one above.</p> <p>Is it because the viewstate timed out? Anyone have an idea on this?</p> <p>Thanks!</p>
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