# RW cannot start internal web server

**URL:** <https://forums.realmacsoftware.com/t/rw-cannot-start-internal-web-server/43068>\
**Category:** RapidWeaver Classic\
**Created:** [April 15, 2024, 1:09pm UTC](https://forums.realmacsoftware.com/t/rw-cannot-start-internal-web-server/43068 "2024-04-15T13:09:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![capetom](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/capetom/32/14351_2.png) [@capetom](https://forums.realmacsoftware.com/u/capetom)\
**Post date:** [April 15, 2024, 1:09pm UTC](https://forums.realmacsoftware.com/t/rw-cannot-start-internal-web-server/43068/1 "2024-04-15T13:09:09Z")

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![Bildschirmfoto 2024-04-15 um 15.05.01](https://europe1.discourse-cdn.com/flex005/uploads/realmacsoftware1/original/3X/e/e/eeb4d88e0ca7bca3f1e2bfc7f47b86cd3158a6e8.jpeg)

RW Classic 9.1.1 - MacBookAir M1 - Sonoma 14.4.1  
This is coming up a lot since 2 days - very annoying!

Any cure?

TIA

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**Author:** ![capetom](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/capetom/32/14351_2.png) [@capetom](https://forums.realmacsoftware.com/u/capetom)\
**Post date:** [April 17, 2024, 9:11am UTC](https://forums.realmacsoftware.com/t/rw-cannot-start-internal-web-server/43068/2 "2024-04-17T09:11:21Z")

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Ok, as ist seems no one knows or is interested in this I did check what I changed.  
I put in a %base\_url% in the links for warehoused pictures and this seems to break the internal server.  
Actually as I build sites for clients and have to show them under another web adress first and then publishing to the “real” address the “base\_url” hack would make my life much easier and save a lot of time …  
Seems like RW is not compatible with that.

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**Author:** ![capetom](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/capetom/32/14351_2.png) [@capetom](https://forums.realmacsoftware.com/u/capetom)\
**Post date:** [November 1, 2024, 2:25pm UTC](https://forums.realmacsoftware.com/t/rw-cannot-start-internal-web-server/43068/3 "2024-11-01T14:25:03Z")

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@differentdan  
Okay, now on RW 9.3.4 and Sequoia 15.1.  
Still the annoying “Could not start the internal web server”.  
Am I the only one where it is occuring?

Is there a cure coming for that?  
Would help so much working on clients sites …

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**Author:** ![differentdan](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/differentdan/32/33530_2.png) [@differentdan](https://forums.realmacsoftware.com/u/differentdan)\
**Post date:** [November 1, 2024, 7:01pm UTC](https://forums.realmacsoftware.com/t/rw-cannot-start-internal-web-server/43068/4 "2024-11-01T19:01:10Z")

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Hey @capetom,

I haven’t seen any reports of this coming in from anybody else.

Maybe try @Heroic_Nonsense’s suggestion in this post [Permission denied. Couldn't start the internal web server on 127.0.01:21 - #2 by Heroic\_Nonsense](https://forums.realmacsoftware.com/t/permission-denied-couldnt-start-the-internal-web-server-on-127-0-01-21/43606/2) and see if it fixes your issue.

Also make sure the “Web Server Port” field is empty on that same page. Let RapidWeaver auto-select the port for you.

Let us know how you get on.