<div>
Meaning of error message:<br />

<blockquote>
<br />
502 Bad Gateway<br />
&nbsp; &nbsp; The server was acting as a gateway or proxy and received an invalid response from the upstream server.<br />

</blockquote>
<br />
Lets first check that the script itself is working correctly. &nbsp;Try running the script from the command line instead of through the browser and &nbsp;post the exact output it generates.<br />
<br />
It would also be helpful if you post the script so we can see what it's doing.
</div>


Meaning of error message:


> 502 Bad Gateway
>     The server was acting as a gateway or proxy and received an invalid response from the upstream server.


Lets first check that the script itself is working correctly.  Try running the script from the command line instead of through the browser and  post the exact output it generates.

It would also be helpful if you post the script so we can see what it's doing.

<div>
Thanks guys for your reply, HTTP headers was not correct. I have changed it and its working.
</div>


Thanks guys for your reply, HTTP headers was not correct. I have changed it and its working.

<div>
<div class="content wysiwyg-content">
We have recently migrated from Old webservers (Win2003 - IIS 6) to New Servers (Win2008 R2 - IIS 7). Now we are getting error when accessing the URL getting error <br />
<br />
HTTP Error 502.2 - Bad Gateway<br />
The specified CGI application misbehaved by not returning a complete set of HTTP headers.<br />
<br />
Module &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CgiModule<br />
Notification &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ExecuteRequestHandler<br />
Handler &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CGI Script Map<br />
Error Code &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0x000000ff<br />
<br />
I recently noticed older Web Server has Perl v5.8.8 and New server has Perl v5.20.1. Need help on this.
</div>
</div>


We have recently migrated from Old webservers (Win2003 - IIS 6) to New Servers (Win2008 R2 - IIS 7). Now we are getting error when accessing the URL getting error 

HTTP Error 502.2 - Bad Gateway
The specified CGI application misbehaved by not returning a complete set of HTTP headers.

Module	CgiModule
Notification	ExecuteRequestHandler
Handler	CGI Script Map
Error Code	0x000000ff

I recently noticed older Web Server has Perl v5.8.8 and New server has Perl v5.20.1. Need help on this.

HTTP Error 502.2 - Bad Gateway

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

Perl is a high-level, general-purpose, interpreted, dynamic programming languages with over 25 years of development. Perl 5 runs on over 100 platforms from portables to mainframes and is suitable for both rapid prototyping and large-scale development projects.  Perl gained widespread popularity as a Common Gateway Interface (CGI) scripting language, in part due to its regular expression and string parsing abilities. In addition to CGI, Perl is used for graphics programming, system administration, network programming, finance, bioinformatics, and other applications.