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Hello,   I'm experiencing issues installing appdynamics v.4.5.23 via npm on macOS High Sierra 10.13.6.   npm install appdynamics@4.5.23   I've tried setting the user-agent in the npm config as per (https://community.appdynamics.com/t5/Knowledge-Base/Advanced-NPM-Guide-for-the-AppDynamics-Node-js-Agent/ta-p/26743) with no luck. It is currently set to "npm/6.13.4 node/v12.14.0 darwin x64"   I am running on Node v12.14.0 and npm 6.13.4. The issue appears to be that the Agent version being used is 4.5.17 which obviously is not compatible with node v12. It tries to download https://cdn.appdynamics.com/packages/nodejs/4.5.17.0/appdynamics-zmq-native-osx-x64-v12.tgz which does not exist. It instead should be using https://cdn.appdynamics.com/packages/nodejs/4.5.23.0/appdynamics-zmq-native-osx-x64-v12.tgz. Because of this a 403 error is received and an Unsupported engine error is printed by npm. Is there any way for me to forcibly set the agent version to 4.5.23?   Any help would be greatly appreciated. Below is the log from npm:   --   → npm install appdynamics@4.5.23 > appdynamics-zmq@4.5.17 preinstall /Users/user/app/node_modules/appdynamics-zmq > npm install request@2.40.0 fs-extra@2.0.0 tar-pack@3.4.1 && node install.js appdynamics-zmq-native appdynamics-zmq 5683.0.0 ... + tar-pack@3.4.1 + fs-extra@2.0.0 + request@2.40.0 added 60 packages from 40 contributors and audited 136 packages in 4.725s 1 package is looking for funding run `npm fund` for details found 8 moderate severity vulnerabilities run `npm audit fix` to fix them, or `npm audit` for details installing packageappdynamics-zmq-native v12.14.0 Testing: BaseUrl set is:https://cdn.appdynamics.com/packages/nodejs/ Agent version 4.5.17 Get agent version result is:4.5.17.0 Agent version 4.5.17 baseUrl is:https://cdn.appdynamics.com/packages/nodejs/ DownloadURL is:https://cdn.appdynamics.com/packages/nodejs/4.5.17.0/appdynamics-zmq-native-osx-x64-v12.tgz https://cdn.appdynamics.com/packages/nodejs/4.5.17.0/appdynamics-zmq-native-osx-x64-v12.tgz Downloadinghttps://cdn.appdynamics.com/packages/nodejs/4.5.17.0/appdynamics-zmq-native-osx-x64-v12.tgz Saving to/var/folders/9l/z7twwdhj64z83f29zwxx64900000gp/T/appdynamics/appdynamics-zmq-native-osx-x64-v12.tgz user agent: node/v12.14.0 darwin x64 Receiving... https://cdn.appdynamics.com/packages/nodejs/4.5.17.0/appdynamics-zmq-native-osx-x64-v12.tgz Error requesting archive. Status: 403 Request options: { "uri": "https://cdn.appdynamics.com/packages/nodejs/4.5.17.0/appdynamics-zmq-native-osx-x64-v12.tgz", "followRedirect": true, "headers": { "User-Agent": "node/v12.14.0 darwin x64" }, "gzip": true, "encoding": null, "strictSSL": true } Response headers: { "content-type": "application/xml", "transfer-encoding": "chunked", "connection": "close", "date": "Thu, 23 Jan 2020 19:06:30 GMT", "server": "nginx/1.10.2", "x-cache": "Error from cloudfront", "via": "1.1 cb19960e48e57443d56ab67d0048d850.cloudfront.net (CloudFront)", "x-amz-cf-pop": "PHL50-C1", "x-amz-cf-id": "d9-wNnQbcEIIJt3eJLinwDz6TgumqbudRO5Jz4gy_KUfGxUIHtewiA==" } Make sure your network and proxy settings are correct.   > appdynamics@4.5.23 preinstall /Users/user/app/node_modules/appdynamics > node preInstallScript.js internal/modules/cjs/loader.js:800 throw err; ^ Error: Cannot find module '/Users/user/app/node_modules/appdynamics/preInstallScript.js' at Function.Module._resolveFilename (internal/modules/cjs/loader.js:797:15) at Function.Module._load (internal/modules/cjs/loader.js:690:27) at Function.Module.runMain (internal/modules/cjs/loader.js:1047:10) at internal/main/run_main_module.js:17:11 { code: 'MODULE_NOT_FOUND', requireStack: [] } npm WARN notsup Unsupported engine for appdynamics-zmq@4.5.17: wanted: {"node":">=0.8 <=v11.*"} (current: {"node":"12.14.0","npm":"6.13.4"}) npm WARN notsup Not compatible with your version of node/npm: appdynamics-zmq@4.5.17 npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! appdynamics-zmq@4.5.17 preinstall: `npm install request@2.40.0 fs-extra@2.0.0 tar-pack@3.4.1 && node install.js appdynamics-zmq-native appdynamics-zmq 5683.0.0` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the appdynamics-zmq@4.5.17 preinstall script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! /Users/user/.npm/_logs/2020-01-23T19_06_30_699Z-debug.log   ... View more