Welcome to the Cumulus Support forum.
Latest Cumulus MX V4 release 4.4.2 (build 4085) - 12 March 2025
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
If you are posting a new Topic about an error or if you need help PLEASE read this first viewtopic.php?p=164080#p164080
Latest Cumulus MX V4 release 4.4.2 (build 4085) - 12 March 2025
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
If you are posting a new Topic about an error or if you need help PLEASE read this first viewtopic.php?p=164080#p164080
Upgraded from 4063 to 4067 and it failed to start
Moderator: mcrossley
-
mwittl
- Posts: 19
- Joined: Sun 08 Dec 2013 11:51 am
- Weather Station: Vantage Vue
- Operating System: Windows 10
- Location: Roanoke, VA (USA)
- Contact:
Upgraded from 4063 to 4067 and it failed to start
Not sure if anyone else had this problem or not? I upgraded my 4063 build to 4067 and it would not start for the 1st time ever. Looked at the .ini....it erased it and replaced it with a blank one. Restored a backup .ini and same thing...Windows service would not start. Looked at .ini again and nothing pertaining to my site was there again? Thoughts?
-
mwittl
- Posts: 19
- Joined: Sun 08 Dec 2013 11:51 am
- Weather Station: Vantage Vue
- Operating System: Windows 10
- Location: Roanoke, VA (USA)
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
Yes...never saw that before but that is the issue. It didn't look like a solution was found or did I miss that? Going to stay with my 4063 until I hear something.
-
SamiS
- Posts: 510
- Joined: Sun 27 Feb 2011 5:13 pm
- Weather Station: Ecowitt HP2551 & GW1100
- Operating System: Raspberry Pi OS
- Location: Kangasala, Finland
Re: Upgraded from 4063 to 4067 and it failed to start
The resolution was kind of provided in that thread Mapantz linked earlier, but not easy to spot. Check the filesystem permissions of the CumulusMX folder. Probably for some reason the user running the service does not correctly have the ”modify” permission for files and folders. You may want to disable inheritance from root (retain the existing permissions instead of removing them).
-
mwittl
- Posts: 19
- Joined: Sun 08 Dec 2013 11:51 am
- Weather Station: Vantage Vue
- Operating System: Windows 10
- Location: Roanoke, VA (USA)
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
Well, gave that a try. Set permissions to Full Control for all users...(Windows 11). Didn't work.....same result as before. Had to roll back to 4043 again. Thank God for Acronis.....
-
freddie
- Posts: 2870
- Joined: Wed 08 Jun 2011 11:19 am
- Weather Station: Davis Vantage Pro 2 + Ecowitt
- Operating System: GNU/Linux Ubuntu 24.04 LXC
- Location: Alcaston, Shropshire, UK
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
Would you be able to upload your log files from the MXdiags folder, please? Sure would help with diagnosis.
-
mwittl
- Posts: 19
- Joined: Sun 08 Dec 2013 11:51 am
- Weather Station: Vantage Vue
- Operating System: Windows 10
- Location: Roanoke, VA (USA)
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
Hopefully this helps! This was generated with file system set for Full Control for all users.
You do not have the required permissions to view the files attached to this post.
Last edited by mwittl on Mon 23 Dec 2024 7:06 pm, edited 1 time in total.
-
SamiS
- Posts: 510
- Joined: Sun 27 Feb 2011 5:13 pm
- Weather Station: Ecowitt HP2551 & GW1100
- Operating System: Raspberry Pi OS
- Location: Kangasala, Finland
Re: Upgraded from 4063 to 4067 and it failed to start
This is bad news, since it suggests that the root cause isn’t file permissions. The actual reason may be hard to find, since Mark said that the code handling the ini hasn’t changed for several versions.
FWIW you do not need Acronis, since CMX does automatic backups daily and at every restart (located under subfolder backups). But in any case it is a good practise to make a manual backup before upgrade.
And actually, if you follow the recommended upgrade method, you have a working copy ready anyway. (See the end of the post)
viewtopic.php?t=22051
-
freddie
- Posts: 2870
- Joined: Wed 08 Jun 2011 11:19 am
- Weather Station: Davis Vantage Pro 2 + Ecowitt
- Operating System: GNU/Linux Ubuntu 24.04 LXC
- Location: Alcaston, Shropshire, UK
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
From the log:
Don't you start MX on Windows with CumulusMX.exe?
Code: Select all
2024-12-23 13:16:30.658 Command line: C:\CumulusMX\CumulusMX.dll - PaulMy
- Posts: 4355
- Joined: Sun 28 Sep 2008 11:54 pm
- Weather Station: Davis VP2 Plus 24-Hour FARS
- Operating System: Windows8 and Windows10
- Location: Komoka, ON Canada
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
Code: Select all
Don't you start MX on Windows with CumulusMX.exe?Enjoy,
Paul
VP2+
C1 www.komokaweather.com/komokaweather-ca
MX https://komokaweather.com/cumulusmx/index.htm /index.html /index.php
MX https://komokaweather.com/cumulusmxwll/index.htm /index.html /index.php
MX https:// komokaweather.com/cumulusmx4/index.htm

C1 www.komokaweather.com/komokaweather-ca
MX https://komokaweather.com/cumulusmx/index.htm /index.html /index.php
MX https://komokaweather.com/cumulusmxwll/index.htm /index.html /index.php
MX https:// komokaweather.com/cumulusmx4/index.htm
- mcrossley
- Posts: 14384
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
On Windows you can use either the .exe, or start it the same way as on Linux, using dotnet to run the dll directly.freddie wrote: ↑Mon 23 Dec 2024 7:15 pm From the log:Don't you start MX on Windows with CumulusMX.exe?Code: Select all
2024-12-23 13:16:30.658 Command line: C:\CumulusMX\CumulusMX.dll
- mcrossley
- Posts: 14384
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
Though the code has not changed for a long time, the part that is failing is not invoked very often - only when a new version of MX needs to delete an obsolete entry in the Cumulus.ini file.
It does this by setting the content to be empty, then writing the new content. It looks like on some installs of Windows there is an issue doing this.
I'll look into this some more...
It does this by setting the content to be empty, then writing the new content. It looks like on some installs of Windows there is an issue doing this.
I'll look into this some more...
- mcrossley
- Posts: 14384
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
Could you see if the attached build fixes this?
-
freddie
- Posts: 2870
- Joined: Wed 08 Jun 2011 11:19 am
- Weather Station: Davis Vantage Pro 2 + Ecowitt
- Operating System: GNU/Linux Ubuntu 24.04 LXC
- Location: Alcaston, Shropshire, UK
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
You learn something new every day! So is the exe just a wrapper that calls dotnet to run the dll?mcrossley wrote: ↑Tue 24 Dec 2024 10:02 amOn Windows you can use either the .exe, or start it the same way as on Linux, using dotnet to run the dll directly.freddie wrote: ↑Mon 23 Dec 2024 7:15 pm From the log:Don't you start MX on Windows with CumulusMX.exe?Code: Select all
2024-12-23 13:16:30.658 Command line: C:\CumulusMX\CumulusMX.dll
- mcrossley
- Posts: 14384
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Upgraded from 4063 to 4067 and it failed to start
Sort of, it doesn't actually call the dotnet executable, but ultimately it just runs the dll where the real code resides.