# Running a Natural application in a browser

**URL:** <https://techcommunity.softwareag.com/t/running-a-natural-application-in-a-browser/197618>\
**Category:** Forum\
**Tags:** Adabas-Natural, Natural, Natural-on-Linux, Natural-Installation-and-Setup-on-Open-Systems, Natural-on-Windows-Unix\
**Created:** [January 5, 2018, 12:57am UTC](https://techcommunity.softwareag.com/t/running-a-natural-application-in-a-browser/197618 "2018-01-05T00:57:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ralph\_Zbrog](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/ralph_zbrog/32/78_2.png) [@Ralph\_Zbrog](https://techcommunity.softwareag.com/u/Ralph_Zbrog)\
**Post date:** [January 5, 2018, 12:57am UTC](https://techcommunity.softwareag.com/t/running-a-natural-application-in-a-browser/197618/1 "2018-01-05T00:57:43Z")

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Natural for Windows 8.3.8  
Natural Web I/O Interface 1.3.19

Despite my best efforts to follow the installation instructions to the letter, I am unable to execute my Natural application in a browser. The browser, Tomcat, and Natural are all running on the same machine. I used the Natural Web I/O Interface Client Configuration Tool to define a session, but when I logon, I immediately receive “Connection to Natural server ‘xxx’ failed!”.

In the middle of the nwolog.log file I see"WARNING: Exception java.io.IOException: An established connection was aborted by the software in your host machine". At the end of the log I see “INFO: Connect to host: xxx with port: 2900 failed”.

In Windows Event Viewer, I see the error message “nchInitCommunications() failed with error:” with Source/Provider “Natural 8.3 Web IO Service”.

Has anyone gotten this to work? Any tips on getting my attempts to work?

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**Author:** ![Ralph\_Zbrog](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/ralph_zbrog/32/78_2.png) [@Ralph\_Zbrog](https://techcommunity.softwareag.com/u/Ralph_Zbrog)\
**Post date:** [January 22, 2018, 10:33pm UTC](https://techcommunity.softwareag.com/t/running-a-natural-application-in-a-browser/197618/2 "2018-01-22T22:33:38Z")

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I have made significant progress, with help from SAG Support. (Thanks, Julie.)

Via Google I was able to correct a bug in catalina.bat of apache-tomcat-6.0.53. This involved removal of references to “java.endorsed” at the end of the script.

Secondly, SAG’s procedure for SSL configuration neglects a step. That is, to copy server.cert.crt & server.cert.key to C:\Windows\SysWOW64 on the Natural server.

I am still working a few issues, but will post resolutions when I have them.

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**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\
**Post date:** [April 2, 2021, 3:39pm UTC](https://techcommunity.softwareag.com/t/running-a-natural-application-in-a-browser/197618/3 "2021-04-02T15:39:53Z")

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