**TL;DR** The extension doesn't support HTTPS proxy with a self-signed certificate. It supports self-signed certificates without proxy or proxy with normal CA certificates, but not the combination of proxy + self-signed. --- In settings.json, I have ``` "gitlab.instanceUrl": "https://XXX.com/", "gitlab.ignoreCertificateErrors": true, ``` Even so, on `Gitlab: Refresh Sidebar`, I see ``` API request failed when trying to get current project because: request to https://XXX.com/api/graphql failed, reason: unable to verify the first certificate ``` The logs show ``` request to https://XXX.com/api/graphql failed, reason: unable to verify the first certificate FetchError: request to https://XXX.com/api/graphql failed, reason: unable to verify the first certificate at ClientRequest.<anonymous> (/root/.vscode-server/extensions/gitlab.gitlab-workflow-3.11.2/node_modules/node-fetch/lib/index.js:1461:11) at ClientRequest.emit (events.js:315:20) at TLSSocket.socketErrorListener (_http_client.js:426:9) at TLSSocket.emit (events.js:315:20) at emitErrorNT (internal/streams/destroy.js:92:8) at emitErrorAndCloseNT (internal/streams/destroy.js:60:3) at processTicksAndRejections (internal/process/task_queues.js:84:21) { "message": "API request failed when trying to get current project because: request to https://XXX.com/api/graphql failed, reason: unable to verify the first certificate", "stack": [ "Error: API request failed when trying to get current project because: request to https://XXX.com/api/graphql failed, reason: unable to verify the first certificate", "\tat Object.<anonymous> (/root/.vscode-server/extensions/gitlab.gitlab-workflow-3.11.2/out/src/gitlab_service.js:91:19)", "\tat Generator.throw (<anonymous>)", "\tat rejected (/root/.vscode-server/extensions/gitlab.gitlab-workflow-3.11.2/out/src/gitlab_service.js:6:65)", "\tat processTicksAndRejections (internal/process/task_queues.js:97:5)" ] } ``` This is on a remote machine connected using Remote-SSH.