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can u give some background of what the exception is about?<br />
obviously .net, but what version? what are you trying to accomplish?<br />
maybe some code snippet?
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can u give some background of what the exception is about?
obviously .net, but what version? what are you trying to accomplish?
maybe some code snippet?

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guided us to solve the issue.
</div>


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<div class="content wysiwyg-content">
System.InvalidOperationExc<wbr />eption: An error occurred creating the form. See Exception.InnerException for details. &nbsp;The error is: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) ---&gt; System.Runtime.InteropServ<wbr />ices.COMEx<wbr />ception (0x80040154): Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))<br />
<br />
<br />
Can you help me to rectify this connection
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System.InvalidOperationException: An error occurred creating the form. See Exception.InnerException for details.  The error is: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) ---> System.Runtime.InteropServices.COMException (0x80040154): Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))


Can you help me to rectify this connection

Exceptional Error

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.

Microsoft Legacy OS

A programming language is a formal constructed language designed to communicate instructions to a machine, particularly a computer. Thousands of different programming languages have been created, mainly in the computer field, and many more still are being created every year. The description of a programming language is usually split into the two components of syntax (form) and semantics (meaning). Some languages are defined by a specification document (for example, the C programming language is specified by an ISO Standard), while other languages (such as Perl) have a dominant implementation that is treated as a reference. Some languages have both, with the basic language defined by a standard and extensions taken from the dominant implementation being common.

Programming Languages-Other

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.