SSL_CERT_FILE not set - PrusaSlicer https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/ Prusa3D Forum Discussion Board en-US Fri, 12 Jun 2026 02:31:08 +0000 wpForo 60 RE: SSL_CERT_FILE not set https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-784786 Sat, 07 Mar 2026 18:22:13 +0000 Ok, previous post was actually for adding a directory outside my /home, where all my print files are saved.

To fix the SSL is actually here:

]]> PrusaSlicer rhauff https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-784786 RE: https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-784784 Sat, 07 Mar 2026 17:48:20 +0000 Ok, thanks.  I installed flatseal from this link:

https://flathub.org/en/apps/com.github.tchx84.Flatseal/install

then added the needed folder that was outside my home directory in the "Other Files" section of Flatseal:

Flatseal-dir

]]> PrusaSlicer rhauff https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-784784 RE: SSL_CERT_FILE not set https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-784463 Thu, 05 Mar 2026 07:31:44 +0000 Flatseal is a graphical permission Manager for Flatpack which makes it easier ti set such environmental variables.

https://github.com/tchx84/Flatseal

]]> PrusaSlicer bjoerns1983 https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-784463 RE: SSL_CERT_FILE not set https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-784419 Wed, 04 Mar 2026 22:39:07 +0000  

Posted by: @bjoerns1983

Use fleatseal to add an new environmental variable SSL_CERT_FILE=/etc/ssl/certs/ca-bundle.crt

Can you please clarify?  What is fleatseal?

]]> PrusaSlicer rhauff https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-784419 RE: SSL_CERT_FILE not set https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-776809 Mon, 05 Jan 2026 22:16:51 +0000 Use fleatseal to add an new environmental variable SSL_CERT_FILE=/etc/ssl/certs/ca-bundle.crt

]]> PrusaSlicer bjoerns1983 https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-776809 RE: SSL_CERT_FILE not set https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-773693 Thu, 11 Dec 2025 07:22:31 +0000 I do have the same problem on Manjaro. However I can sent files via Prusa Link. But still the message comes up with every start of prusaslicer.

]]> PrusaSlicer bertwest https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-773693 SSL_CERT_FILE not set https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-771461 Tue, 25 Nov 2025 01:43:44 +0000 I am using Prusaslicer 2.9.4 on Kubuntu 24.04 Linux installed from flatpak. I get a dialog box when starting saying:

"Prusaslicer detected system SSL certificate store in: /etc/pki/tls/certs/ca-bundle.crt

To specify the system certificate store manually, please set the SSL_CERT_FILE environment variable to the correct CA bundle and restart the application."

I didn't have that directory so I sudo-created it and put a copy of ca-bundle.crt in there. Still no good. I used export to create the environment variable (export -p showed no variable). Still no good. The symptom I get in the application is that I can't use the network to send the gcode to the printer. I have to program the USB stick manually. The printer is 2 meters away and it's too hard to go that far! X-D

]]> PrusaSlicer Markov https://forum.prusa3d.com/forum/prusaslicer/ssl_cert_file-not-set/#post-771461