Sitting in a very enclosed environment whereby we can not download anything at all from the outside world without the help of the IT department. After installing the latest Confluence, 6.12.1, I was hoping that we could benefit from this new feature but we can not get it to work in our closed environment.
I have managed to get the IT department to download the MSI and installed it as a package that all users can use to install it on their computers.
Doing so seems to work since I get an icon at the bottom of the screen and right-clocking it reveals a couple of options. It also gives me a path to a log-file. I can not see anything wrong in that file apart from "Can not find Squirrel". Don't know why that prints out though so thats one of the questions I have.
Also, in the setup, there is a reference to https://atlassian-domain-for-localhost-connections-only.com that must be opened in our firewall, which we have done. The question is, are there more sites that this application is communicating with? I have set it up in an environment not as restricted as the one i'm trying to setup now and it complains about the time not being precise and I'm assuming that it asks for the time so it can compare it with the time set in the computer. My bet is https://time.is since there is a dialog popping up at the same time as the request dialog for trusting our site..
Some screenshots


Anyway. Clicking the "Edit with"-button, trying to edit any file now in Confluence, pdf, png, bmp, etc, results in that the "Download the Atlassian Companion app" dialog shows up. Obviously they do now know about each other.

This is the logfile:
{"namespace":"adc:manifest-controller","date":"2018-11-07T07:51:25.726Z","message":["enabling manifest:","file"]},
{"namespace":"adc:manifest-controller","date":"2018-11-07T07:51:25.728Z","message":["disabling manifest:","screen"]},
{"namespace":"adc:manifest-controller","date":"2018-11-07T07:51:25.728Z","message":["enabling manifest:","feedback"]},
{"namespace":"adc:manifest-controller","date":"2018-11-07T07:51:25.728Z","message":["enabling manifest:","license"]},
{"namespace":"adc:manifest-controller","date":"2018-11-07T07:51:25.728Z","message":["enabling manifest:","feedback"]},
{"namespace":"squirrel.windows","date":"2018-11-07T07:51:25.752Z","message":["processing argv as squirrel command 'undefined'"]},
{"namespace":"adc:auto-updater","date":"2018-11-07T07:51:25.755Z","message":["using update URL for channel:","stable"]},
{"namespace":"adc:auto-updater","date":"2018-11-07T07:51:25.755Z","message":["constructed URL:","https://update-nucleus.atlassian.com/Atlassian-Companion/291cb34fe2296e5fb82b83a04704c9b4/win32/ia32"]},
{"namespace":"adc:auto-updater","date":"2018-11-07T07:51:25.758Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:68:32)\n at Generator.next (<anonymous>)\n at C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\node_modules\\tslib\\tslib.js:103:75\n at new Promise (<anonymous>)\n at Object.__awaiter (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\node_modules\\tslib\\tslib.js:99:16)\n at Object.exports.watchForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:15:53)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\index.ts:105:19)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\index.ts:128:3)\n at Module._compile (module.js:642:30)\n at Object.require.extensions.(anonymous function) [as .ts] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\node_modules\\electron-compile\\lib\\require-hook.js:77:14)\n at Module.load (module.js:561:32)\n at tryModuleLoad (module.js:504:12)\n at Function.Module._load (module.js:496:3)\n at Module.require (module.js:586:17)\n at require (internal/module.js:11:18)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\index.ts:10:1)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\index.ts:172:3)\n at Module._compile (module.js:642:30)\n at Object.require.extensions.(anonymous function) [as .ts] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\node_modules\\electron-compile\\lib\\require-hook.js:77:14)\n at Module.load (module.js:561:32)\n at tryModuleLoad (module.js:504:12)\n at Function.Module._load (module.js:496:3)\n at Module.require (module.js:586:17)\n at Object.init (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\node_modules\\electron-compile\\lib\\config-parser.js:294:16)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\es6-shim.js:8:17)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\es6-shim.js:10:3)\n at Module._compile (module.js:642:30)\n at Object.Module._extensions..js (module.js:653:10)\n at Module.load (module.js:561:32)\n at tryModuleLoad (module.js:504:12)\n at Function.Module._load (module.js:496:3)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\init.js:186:8)\n at Object.<anonymous> (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\init.js:188:3)\n at Module._compile (module.js:642:30)\n at Object.Module._extensions..js (module.js:653:10)\n at Module.load (module.js:561:32)\n at tryModuleLoad (module.js:504:12)\n at Function.Module._load (module.js:496:3)\n at Function.Module.runMain (module.js:683:10)\n at startup (bootstrap_node.js:196:16)\n at bootstrap_node.js:622:3"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T07:51:25.759Z","message":["autoUpdate initialized successfully"]},
{"namespace":"adc:file-manager","date":"2018-11-07T07:51:25.876Z","message":["clearing file manager cache"]},
{"namespace":"adc:browser","date":"2018-11-07T07:51:25.878Z","message":["launching websocket"]},
{"namespace":"adc:proxy-bypass","date":"2018-11-07T07:51:26.044Z","message":["Checking local proxy"]},
{"namespace":"adc:proxy-bypass","date":"2018-11-07T07:51:26.047Z","message":["Local proxy is enabled, checking override setting"]},
{"namespace":"adc:proxy-bypass","date":"2018-11-07T07:51:26.048Z","message":["Adding self to override list"]},
{"namespace":"adc:proxy-bypass","date":"2018-11-07T07:51:26.050Z","message":["updating override"]},
{"namespace":"adc:proxy-bypass","date":"2018-11-07T07:51:26.051Z","message":["Checking local proxy"]},
{"namespace":"adc:proxy-bypass","date":"2018-11-07T07:51:26.053Z","message":["Local proxy is enabled, checking override setting"]},
{"namespace":"adc:browser","date":"2018-11-07T07:51:26.063Z","message":["direct websocket launched successfully on port:",31459]},
{"namespace":"adc:settings","date":"2018-11-07T07:51:26.067Z","message":["opening settings store"]},
{"namespace":"adc:browser","date":"2018-11-07T07:51:26.083Z","message":["ssl websocket launched successfully on port:",22274]},
{"namespace":"adc:analytics","date":"2018-11-07T07:51:26.130Z","message":["event","companion.start",{"new":true},"ab12adaa-d12f-4d40-b403-f9830e6003a4"]},
{"namespace":"adc:core","date":"2018-11-07T07:51:26.320Z","message":["generating tray menu from manifests"]},
{"namespace":"adc:websocket:auth","date":"2018-11-07T07:51:29.098Z","message":["detecting time offset from true time as:",0]},
{"namespace":"adc:auto-updater","date":"2018-11-07T07:56:26.168Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:01:26.287Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:06:26.273Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:11:26.247Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:16:26.249Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:21:26.250Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:26:26.251Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:31:26.252Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:36:26.253Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:41:26.244Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:46:26.236Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:51:26.238Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T08:56:26.234Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]},
{"namespace":"adc:auto-updater","date":"2018-11-07T09:01:26.215Z","message":["update error",{"message":"Can not find Squirrel","stack":"Error: Can not find Squirrel\n at AutoUpdater.emitError (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:70:24)\n at AutoUpdater.checkForUpdates (C:\\Program Files (x86)\\Atlassian Companion\\resources\\electron.asar\\browser\\api\\auto-updater\\auto-updater-win.js:41:19)\n at Timeout.setTimeout [as _onTimeout] (C:\\Program Files (x86)\\Atlassian Companion\\resources\\app.asar\\src\\browser\\autoUpdater.ts:38:67)\n at ontimeout (timers.js:475:11)\n at tryOnTimeout (timers.js:310:5)\n at Timer.listOnTimeout (timers.js:270:5)"}]}
]