Deployment Failed: Installing ComfyUI-Manager
How to fix deployment failures at the ComfyUI-Manager installation step, especially on Windows networks where GitHub clone, proxy, SSL, or path issues block first-run setup.
If the launcher stops at Installing ComfyUI-Manager, Wonderful Launcher's git clone of ComfyUI-Manager into custom_nodes/ failed. This is a Git/network problem, not a Python-package repair — solve the clone path first, then retry deployment. Severity: high — it blocks first deployment; ComfyUI can still run afterward, but without plugin management.
The clone can fail for a small number of repeatable reasons:
- Cannot reach GitHub — direct connections unstable or blocked in some regions
- Proxy not passed to Git — a system proxy is running but Git is not configured to use it
- SSL certificate error — corporate networks, antivirus, or firewalls intercept HTTPS, causing
SSL certificate problem - Path too long — deeply nested directories trigger
Filename too long - Git missing or outdated — Git is not installed or is below 2.20
Fastest triage order
- Run
git --version. - Retry the clone manually in the target
custom_nodesfolder. - If it hangs or cannot connect, configure a proxy for Git.
- If it errors on certificates, switch Git to
schannel. - If it errors on path length, shorten the install path and enable long paths.
Option 1: Configure a proxy for Git
If you use a proxy tool such as Clash or V2Ray, configure Git to route through the same proxy:
git config --global http.proxy http://127.0.0.1:7890
git config --global https.proxy http://127.0.0.1:7890SOCKS5 (some tools):
git config --global http.proxy socks5://127.0.0.1:7891
git config --global https.proxy socks5://127.0.0.1:7891GitHub-only (avoids affecting other repos):
git config --global http.https://github.com.proxy http://127.0.0.1:7890
git config --global https.https://github.com.proxy http://127.0.0.1:7890After configuring, retry deployment. To remove:
git config --global --unset http.proxy
git config --global --unset https.proxyOption 2: Fix SSL certificate errors
If the error contains SSL certificate problem, a corporate network, antivirus, or firewall is intercepting HTTPS.
Recommended — use the Windows certificate store:
git config --global http.sslBackend schannelTemporary workaround (trusted networks only):
git config --global http.sslVerify falseRe-enable it once resolved:
git config --global http.sslVerify trueOlder Git may ship an expired CA bundle — update from https://git-scm.com/.
Option 3: Fix path-too-long errors
If the error contains Filename too long, enable long path support.
Git long paths (Command Prompt as Administrator):
git config --system core.longpaths trueWindows long paths (PowerShell as Administrator, requires restart):
New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem" -Name "LongPathsEnabled" -Value 1 -PropertyType DWORD -ForceAlso consider installing ComfyUI to a shorter path such as D:\ComfyUI.
Option 4: Install ComfyUI-Manager manually
If nothing above works, skip the automatic install. Find your ComfyUI path in Wonderful Launcher (Environments page; examples assume D:\ComfyUI), then:
cd D:\ComfyUI\custom_nodes
git clone https://github.com/Comfy-Org/ComfyUI-Manager.gitIf a direct connection fails, specify the proxy inline:
git clone -c http.proxy=http://127.0.0.1:7890 https://github.com/Comfy-Org/ComfyUI-Manager.gitVerify (dir D:\ComfyUI\custom_nodes\ComfyUI-Manager should show __init__.py and a js directory), then restart ComfyUI in Wonderful Launcher.
Option 5: Verify that Git is available
git --versionIf not found, install Git for Windows from https://git-scm.com/ with "Add to PATH" checked.
How this relates to other errors
This page is for the deployment step that clones ComfyUI-Manager. If the environment already deployed and ComfyUI itself fails to boot, use ComfyUI Startup Failed, Fix No module named errors, or Dependency Conflicts.
Still not resolved?
Contact support through the "Contact Us" button and include a full screenshot of the error, the output of git clone https://github.com/Comfy-Org/ComfyUI-Manager.git, and the output of git config --global --list.
Source References
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