# Invalid connection properties!

**URL:** <https://techcommunity.softwareag.com/t/invalid-connection-properties/244174>\
**Category:** Forum\
**Tags:** Adabas-Natural, NaturalONE\
**Created:** [September 8, 2021, 11:07pm UTC](https://techcommunity.softwareag.com/t/invalid-connection-properties/244174 "2021-09-08T23:07:48Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [September 9, 2021, 4:47am UTC](https://techcommunity.softwareag.com/t/invalid-connection-properties/244174/2 "2021-09-09T04:47:31Z")

</div>

Please explain what you mean by

> WEB = HTTP: // http: // localhost: 8080

I received Error 404 when I attempted to execute HELLO-P, so I deleted the project and re-installed it according to the instructions in a prior post: [Unable to run Hello-P.NSP - #3 by Ralph\_Zbrog](https://techcommunity.softwareag.com/t/unable-to-run-hello-p-nsp/239529/3) I followed that with a re-build of the Natural project. I had to repeat the delete/re-install/re-build procedure a couple of times before it worked. Now I can click _Run As → 1 Natural Application_ to see the result in a Natural I/O window.

Also verify your launch settings:

- From the Natural Navigator tab, open the context menu  
of the Natural library SAMP4ONE. (Or from the Navigator tab,  
open the context menu of the Natural-Libraries node.)
- From the context menu, go to Run As → Run Configurations …
- This will take you to Natural Application → Default Launch
- In the Natural Application tab, set Hostname to localhost and Port number to 28080. Click Close.

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