Comfy-Org/ComfyUI-Manager
1
0
Fork 0
mirror of https://github.com/Comfy-Org/ComfyUI-Manager.git synced 2026-11-05 07:47:25 +00:00
Code Issues 456 Projects Packages Wiki Activity

[GH-ISSUE #2076] [Bug] SSL: CERTIFICATE_VERIFY_FAILED when installing nodes in ComfyUI Manager (Windows Portable) #861

New issue
Open
opened 2026-10-27 21:23:14 +00:00 by bsakaguchi · 1 comment
bsakaguchi commented 2026-10-27 21:23:14 +00:00
Owner
Copy link

Originally created by @eugene001teb-gif on GitHub (Aug 12, 2025).
Original GitHub issue: https://github.com/Comfy-Org/ComfyUI-Manager/issues/2076

Describe the bug
When trying to install missing components or nodes using ComfyUI Manager in the Windows portable version, installation fails with an SSL certificate verification error:

This happens because the embedded Python in ComfyUI_windows_portable is not configured to use an up-to-date CA certificate bundle.

Environment:

  • OS: Windows 10/11
  • ComfyUI Version: (Portable, NVIDIA build)
  • Python: Embedded (comes with ComfyUI portable)

Steps to reproduce:

  1. Use ComfyUI Windows Portable
  2. Open ComfyUI Manager
  3. Try to install/update a node from CDN (e.g., cdn.comfy.org)
  4. Installation fails with SSL error

Solution / Workaround:

The fix is to point the embedded Python to the existing certifi CA bundle:

  1. Open Command Prompt
  2. Run:

setx SSL_CERT_FILE "<PATH_TO_COMFYUI>\python_embeded\Lib\site-packages\certifi\cacert.pem"

  1. Restart ComfyUI

Why this works:
The embedded Python ships with certifi, which has a current CA store, but by default it may not be used.
Setting the SSL_CERT_FILE environment variable forces Python to use the correct certificate bundle, allowing HTTPS downloads to succeed.

Possible improvement:

  • Have ComfyUI Manager automatically detect and use the certifi CA bundle in the embedded Python environment.
  • Or bundle updated CA certs by default and point SSL_CERT_FILE on startup.
Originally created by @eugene001teb-gif on GitHub (Aug 12, 2025). Original GitHub issue: https://github.com/Comfy-Org/ComfyUI-Manager/issues/2076 **Describe the bug** When trying to install missing components or nodes using ComfyUI Manager in the Windows portable version, installation fails with an SSL certificate verification error: This happens because the embedded Python in `ComfyUI_windows_portable` is not configured to use an up-to-date CA certificate bundle. --- **Environment:** - OS: Windows 10/11 - ComfyUI Version: (Portable, NVIDIA build) - Python: Embedded (comes with ComfyUI portable) --- **Steps to reproduce:** 1. Use ComfyUI Windows Portable 2. Open ComfyUI Manager 3. Try to install/update a node from CDN (e.g., `cdn.comfy.org`) 4. Installation fails with SSL error --- **Solution / Workaround:** The fix is to point the embedded Python to the existing `certifi` CA bundle: 1. Open Command Prompt 2. Run: setx SSL_CERT_FILE "<PATH_TO_COMFYUI>\python_embeded\Lib\site-packages\certifi\cacert.pem" 3. Restart ComfyUI --- **Why this works:** The embedded Python ships with `certifi`, which has a current CA store, but by default it may not be used. Setting the `SSL_CERT_FILE` environment variable forces Python to use the correct certificate bundle, allowing HTTPS downloads to succeed. --- **Possible improvement:** - Have ComfyUI Manager automatically detect and use the `certifi` CA bundle in the embedded Python environment. - Or bundle updated CA certs by default and point `SSL_CERT_FILE` on startup.
bsakaguchi commented 2026-10-27 21:23:15 +00:00
Author
Owner
Copy link

@ltdrdata commented on GitHub (Aug 27, 2025):

Is this an issue that cannot be resolved with pip install --upgrade certifi?

<!-- gh-comment-id:3228996037 --> @ltdrdata commented on GitHub (Aug 27, 2025): Is this an issue that cannot be resolved with `pip install --upgrade certifi`?
Sign in to join this conversation.
No Branch/Tag specified
Branches Tags
main
fix/per-graph-clear-hook
fix/manager-theme-styles
desktop-linux-form-factor
chore/node-runtime-refresh-2026-09-28
manager-v4
feat/v4-flagged-policy
fix/v3-ui-escaping
fix/v4-ui-escaping
feat/v3-flagged-policy
fix/v4-uv-conflict-attribution
test/issue-3128-c1-guard
fix/issue-3128-c1
feat/v4-dedicated-install-flags
fix/pygit2-fallback-followups
fix/comfyui-versions-pick-latest
brucew4yn3rp/main
manager-cacheless
feat/manager-v4-general-pip-policy
readme-for-migration
draft-v4
reverted-matrix-nio
fix/missing-nodes-in-subgraph
draft-v4-snapshot-diff
feat/add-taskqueue-unit-tests
feat/complete-todo-implementation
docs/docs-readme
docs/js-readme
tests/api-tests
api/openapi-spec
docs/node-db-readme
docs/glob-readme
draft-v4-add-legacy-route
draft-v4-contributing
feat/cacheless-v2
rh-test
rhform
dbg1484-1
rework_version_store
attach_node_versions
refactor/pygit2
4.3
3.42
4.2.2
4.2.1
4.1
3.39.3
4.1b8
4.1b6
4.1b5
4.1b4
4.1b3
4.1b2
4.1b1
4.0.5
3.39.2
3.39.1
4.0.4
4.0.3
3.39
3.38.3
3.38.2
3.38
3.37.1
3.37
3.35
3.33.8
3.33.7
3.33.6
3.33.5
3.33.4
3.33.3
3.33.2
3.33
3.32.5
3.32.4
3.32.3
3.32.2
3.32.1
3.32
3.31.13
3.31.12
3.31.11
3.31.8
3.31.6
3.31.4
3.31.2
3.31.1
3.31
3.30.8
3.30.7
3.30.6
3.30.5
3.30.4
3.30.2
3.29
3.28
3.27.11
3.27.8
3.27.3
3.27.2
3.27
3.26.2
3.26.1
3.26
3.25.1
3.25
3.24.1
3.24
3.23
3.22
3.21.5
3.21.3
3.21.1
3.19
3.18.1
3.17.11
3.17.9
3.17.7
3.17.6
3.17.4
3.17.3
3.17.2
3.17.1
3.17
3.16
3.15
3.14
3.13.1
3.13
3.12.2
3.12.1
3.12
3.11.3
3.11.2
3.11
3.10
3.9.4
3.9.3
3.9.2
3.9.1
3.9
3.8.1
3.8
3.7.6
3.7.5
3.7.4
3.7.3
3.7.2
3.7
3.6.5
3.6.4
3.6.2
3.6.1
3.5
3.3.11
3.3.10
3.3.9
3.3.8
3.3.7
3.3.6
3.3.5
3.3.4
3.3.3
3.3.2
2.56.2
3.3
2.55.5
2.55.3
2.54
2.53
2.52
3.0.1
2.51.9
2.51.8
2.51.7
2.51.6
2.51.5
2.51.4
2.51.2
2.51.1
2.50.1
2.50
2.48.7
2.48.6
2.48.3
2.48.4
2.48.2
2.48.1
Labels
Clear labels   
bug

   
CNR

   
duplicate

   
enhancement

   
feature request

   
feature request

   
pull-request
Mirrored from GitHub Pull Request

  
wontfix
No labels
bug
CNR
duplicate
enhancement
feature request
feature request
pull-request
wontfix
Milestone
Clear milestone
No items
No milestone
Projects
Clear projects
No items
No project
Assignees
Clear assignees
No assignees
1 participant
Notifications
Due date
The due date is invalid or out of range. Please use the format "yyyy-mm-dd".

No due date set.

Dependencies

No dependencies set.

Reference
Comfy-Org/ComfyUI-Manager#861
No description provided.