Hi, all.
When I attempt to open the zipped file obtained after downloading submissions, I get the error message "unrecognized file format or file corrupted".
To work around this, I use Briefcase to download the submissions, but, this way takes more time and needs more internet connection; so, help fixing the zipped file opening issue.
Thanks in advance.

Are you running the latest version of Central (v1.1.1)? You can check by going to https://yourserverurl.com/version.txt.

I'm not using the latest version; here is what I see on the versions's page:
4732f7112a286165241aaf7f971f2c2e38d6bb8a client (v1.0.0)
7e8f66f0a5a8f365d5ab89fbbacfefc247417b01 server (v1.0.2)
is it possible to perform the server's update while it's being using?

This issue you are seeing has been fixed in Central v1.1, so upgrading is the best way to fix it.

Updates are generally fast and safe, but they require some downtime. On ODK Cloud, it's usually a few minutes and so users don't even notice. On your infrastructure, I have no idea how long it will take.

Since you have a server that's being used, I'd recommend you have:

  • A recent backup before upgrading
  • A tested plan to rollback to that backup
  • A scheduled window of downtime where you can do the upgrade
  • A way to communicate this window to users
  • A way to communicate changes to that downtime to users

We will do our best to assist if something goes wrong, but please note that support on the forum is provided on a volunteer basis.

I will perform the upgrade following your very important advices and directives.
Thank you so much.