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Have you tried the QuickBooks Install Diagnostics tool?<br />
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Solution 1 at this link provides the download link and instructions for using it: <a href="https://support.quickbooks.intuit.com/support/Articles/HOW12407" rel="ugc">https://support.quickbooks.intuit.com/support/Articles/HOW12407</a>
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As stated, I traced the issue to a software incompatibility. &nbsp;They in turn sent a software fix, and my issue was resolved.
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Quickbooks 2015 starts with .NET Framework error that does not prevent the program from starting when I just hit continue. &nbsp;Specifically it says:<br />
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Could not load the file or assembly 'System.Json, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad3<wbr />64e35' or one of its<br />
<br />
value [HKLM\Software\Microsoft\F<wbr />usion!Enab<wbr />leLog] (DWORD) to th assembly blink failure logging.<br />
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How can I stop this from popping up or otherwise correct it.<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/11_w48/1036102/2015-11-21-14.37.29.jpg" target="_blank" class="file-inline" title="The error message (3.8 MB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>2015-11-21-14.37.29.jpg</a>
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2015-11-21-14.37.29.jpg

Quickbooks 2015 starts with .NET Framework error that does not prevent the program from starting when I just hit continue.  Specifically it says:

Could not load the file or assembly 'System.Json, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its

value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to th assembly blink failure logging.

How can I stop this from popping up or otherwise correct it.

Microsoft .NET Framework

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.