Package Manager Missing

I've seen the other threads, and tried installing the .NET cross compatability package in VS. That didn't work.

Some more info that may be helpful:

• Using Unity 2017.4.16f1
• There is no option to reset prefabs under my Help menu.
• If I import TextMesh Pro from the Asset Store, my manifest.json is empty, just the Dependencies {} is all that's there (no dependecies listed)
• If i try to manually edit manifest.json (based on suggestions from other threads) Unity just does its evil package manager wizardry on it when I reopen the project and the file is empty again. (Dependencies{} contains no dependencies)
• I even tried deleting the cache of packages under Users>AppData>Local>Unity... before reinstalling Unity

Not sure if I could reproduce steps as this all started with me trying to get TextMesh Pro working in HoloLens builds. I started by downloading this version of Unity, then Installed Unity Hub (whichever version the Unity website is pushing now).

Then I noticed I don't have Package Manager under the Window menu (nor do I have Reset Packages under Help)

I've uninstalled Unity Hub, uninstalled and reinstalled Unity 2017.4.16f1 and nothing has changed for the better. I also checked another computer with the same version of Unity that I recently installed and it has the exact same symptoms listed above, though I didn't do nearly all the same troubleshooting and uninstalling.

Spoiler: Editor.log

LICENSE SYSTEM [2019111 20:29:23] Next license update check is after 2019-01-13T02:29:05

Built from '2017.4/staging' branch; Version is '2017.4.16f1 (7f7bdd1ef02b) revision 8354781'; Using compiler version '160040219'
OS: 'Windows 10 (10.0.0) 64bit' Language: 'en' Physical Memory: 16338 MB
BatchMode: 0, IsHumanControllingUs: 1, StartBugReporterOnCrash: 1, Is64bit: 1, IsPro: 1
[Package Manager] Server::Start -- Port 60316 was selected

COMMAND LINE ARGUMENTS:
C:\Program Files\Unity 2017.4.16f1\Editor\Unity.exe
C:/Projects/HL TEST 19
Loading GUID <-> Path mappings...0.000075 seconds
Loading Asset Database...0.007172 seconds
Audio: FMOD Profiler initialized on port 54900
AssetDatabase consistency checks...0.035990 seconds
Refreshing native plugins compatible for Editor in 9.83 ms, found 2 plugins.
Preloading 0 native plugins for Editor in 0.00 ms.
[Package Manager] Resolving 4 packages:
[Package Manager] * Package : com.unity.ads@2.0.8
(location: C:\Users\Shane\AppData\Local\Unity\cache\packages\packages.unity.com\com.unity.ads@2.0.8)
[Package Manager] * Package : com.unity.analytics@2.0.13
(location: C:\Users\Shane\AppData\Local\Unity\cache\packages\packages.unity.com\com.unity.analytics@2.0.13)
[Package Manager] * Package : com.unity.purchasing@0.0.19
(location: C:\Users\Shane\AppData\Local\Unity\cache\packages\packages.unity.com\com.unity.purchasing@0.0.19)
[Package Manager] * Package : com.unity.standardevents@1.0.10
(location: C:\Users\Shane\AppData\Local\Unity\cache\packages\packages.unity.com\com.unity.standardevents@1.0.10)
[Package Manager] Resolve completed
IsTimeToCheckForNewEditor: Update time 1547267321 current 1547263768
Initialize engine version: 2017.4.16f1 (7f7bdd1ef02b)
GfxDevice: creating device client; threaded=1
Direct3D:
Version: Direct3D 11.0 [level 11.1]
Renderer: NVIDIA GeForce GTX 1070 (ID=0x1be1)
Vendor: NVIDIA
VRAM: 8081 MB
Driver: 25.21.14.1634
Initialize mono
Mono path[0] = 'C:/Program Files/Unity 2017.4.16f1/Editor/Data/Managed'
Mono path[1] = 'C:/Program Files/Unity 2017.4.16f1/Editor/Data/Mono/lib/mono/2.0'
Mono config path = 'C:/Program Files/Unity 2017.4.16f1/Editor/Data/Mono/etc'
Using monoOptions --debugger-agent=transport=dt_socket,embedding=1,defer=y,address=0.0.0.0:56884
Begin MonoManager ReloadAssembly
Refreshing native plugins compatible for Editor in 0.48 ms, found 6 plugins.
Initializing Unity.PackageManager (PackageManager) v2017.4.16 for Unity v2017.4.16f1
Registering precompiled unity dll's ...
Register platform support module: C:\Program Files\Unity 2017.4.16f1\Editor\Data\PlaybackEngines\AndroidPlayer/UnityEditor.Android.Extensions.dll
Register platform support module: C:\Program Files\Unity 2017.4.16f1\Editor\Data\PlaybackEngines\MetroSupport/UnityEditor.WSA.Extensions.dll
Register platform support module: C:\Program Files\Unity 2017.4.16f1\Editor\Data\PlaybackEngines\windowsstandalonesupport/UnityEditor.WindowsStandalone.Extensions.dll
Registered in 0.002079 seconds.
Registering platform support modules:
Registered platform support modules in: 0.1101412s.
Native extension for WindowsStandalone target not found
Native extension for Metro target not found
Native extension for Android target not found
Refreshing native plugins compatible for Editor in 0.74 ms, found 6 plugins.
Preloading 2 native plugins for Editor in 1.67 ms.
Mono: successfully reloaded assembly
- Completed reload, in 0.806 seconds
Platform modules already initialized, skipping
Begin MonoManager ReloadAssembly
Registering precompiled user dll's ...
Registered in 0.019720 seconds.
Initializing Unity.PackageManager (PackageManager) v2017.4.16 for Unity v2017.4.16f1
Registering platform support modules:
Registered platform support modules in: 0.0856118s.
Native extension for WindowsStandalone target not found
Native extension for Metro target not found
Native extension for Android target not found
Refreshing native plugins compatible for Editor in 0.66 ms, found 6 plugins.
Preloading 2 native plugins for Editor in 0.26 ms.
Mono: successfully reloaded assembly
- Completed reload, in 0.901 seconds
Platform modules already initialized, skipping
Validating Project structure ... 0.003872 seconds.
Refresh: detecting if any assets need to be imported or removed ... Refresh: elapses 0.054628 seconds
Refreshing native plugins compatible for Editor in 0.52 ms, found 6 plugins.
Preloading 2 native plugins for Editor in 0.23 ms.

----- Total AssetImport time: 0.048487s, AssetImport time: 0.000000s, Asset hashing: 0.000000s [0 B, 0.000000 mb/s]

Warming cache for 357 main assets: 0.001604 seconds elapsed
Initializing Unity extensions:
Updating C:/Program Files/Unity 2017.4.16f1/Editor/Data/PlaybackEngines/MetroSupport/Managed/UAP/UnityEngine.Networking.dll - GUID: 52a206b72a8f4f749c28d8b18b42dd19...
done. [Time: 56.345239 ms]
Refreshing native plugins compatible for Editor in 0.97 ms, found 6 plugins.
Preloading 2 native plugins for Editor in 0.23 ms.

----- Total AssetImport time: 0.124865s, AssetImport time: 0.098760s, Asset hashing: 0.000000s [0 B, 0.000000 mb/s]

'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnityHoloLens/Editor/UnityEditor.HoloLens.dll' GUID: 12fd8a0055b84bb59e84c9835a37e333
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/Timeline/Runtime/UnityEngine.Timeline.dll' GUID: 6a10b2909283487f913b00d94cd3faf5
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/TestRunner/portable/nunit.framework.dll' GUID: 405b9b51bb344a128608d968297df79c
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/GUISystem/Standalone/UnityEngine.UI.dll' GUID: f70555f144d8491a825f0804e09c671c
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/GUISystem/UnityEngine.UI.dll' GUID: f5f67c52d1564df4a8936ccd202a3bd8
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/Timeline/RuntimeEditor/UnityEngine.Timeline.dll' GUID: 844f815391db42d49455cbf1a7bfc434
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/Networking/Standalone/UnityEngine.Networking.dll' GUID: dc443db3e92b4983b9738c1131f555cb
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnitySpatialTracking/Runtime/UnityEngine.SpatialTracking.dll' GUID: ed7343f30e3843b3afda8f8b02669cea
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnityGoogleAudioSpatializer/Editor/UnityEditor.GoogleAudioSpatializer.dll' GUID: 4a3ecb1425d14502837abea459cf2b70
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/Networking/Editor/UnityEditor.Networking.dll' GUID: 5f32cd94baa94578a686d4b9d6b660f7
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnityHoloLens/Runtime/UnityEngine.HoloLens.dll' GUID: f7b54ff4a43d4fcf81b4538b678e0bcc
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnitySpatialTracking/Editor/UnityEditor.SpatialTracking.dll' GUID: b5da970776034f77a070d99423d68791
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/PlaybackEngines/MetroSupport/Managed/UAP/UnityEngine.Networking.dll' GUID: 52a206b72a8f4f749c28d8b18b42dd19
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/TreeEditor/Editor/UnityEditor.TreeEditor.dll' GUID: adebbd281f1a4ef3a30be7f21937e02f
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/Networking/UnityEngine.Networking.dll' GUID: 870353891bb340e2b2a9c8707e7419ba
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/TestRunner/UnityEngine.TestRunner.dll' GUID: 53ebcfaa2e1e4e2dbc85882cd5a73fa1
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnityGoogleAudioSpatializer/RuntimeEditor/UnityEngine.GoogleAudioSpatializer.dll' GUID: ead147da21254ff9a0a936bdd75e1680
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnityGoogleAudioSpatializer/Runtime/UnityEngine.GoogleAudioSpatializer.dll' GUID: e4f4cf1b9b434137a499903a7a1d651a
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnityVR/Editor/UnityEditor.VR.dll' GUID: 4ba2329b63d54f0187bcaa12486b1b0f
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnityHoloLens/RuntimeEditor/UnityEngine.HoloLens.dll' GUID: 1c6d1fbb51834b64847b1b73a75bfc77
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UnitySpatialTracking/RuntimeEditor/UnityEngine.SpatialTracking.dll' GUID: 3a84de5cd0624681b6b6dcd8921d912a
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/GUISystem/Editor/UnityEditor.UI.dll' GUID: 80a3616ca19596e4da0f10f14d241e9f
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UIAutomation/UnityEngine.UIAutomation.dll' GUID: c768acbc9cf24d398488bb4c93b91288
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/TestRunner/Editor/UnityEditor.TestRunner.dll' GUID: 4113173d5e95493ab8765d7b08371de4
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/TestRunner/net35/unity-custom/nunit.framework.dll' GUID: 4b3fa4bde7f1451a8218c03ee6a8ded8
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/UIAutomation/Editor/UnityEditor.UIAutomation.dll' GUID: b8a0574e92bd43a59e19d6c3c6ae54c7
'C:/Program Files/Unity 2017.4.16f1/Editor/Data/UnityExtensions/Unity/Timeline/Editor/UnityEditor.Timeline.dll' GUID: 7668179ede524d6396c8b7d84461ea29
Load scene 'Assets/test.unity' time: 0.011851 ms
Unloading 142 Unused Serialized files (Serialized files now loaded: 0)
System memory in use before: 31.3 MB.
System memory in use after: 31.3 MB.

Unloading 113 unused Assets to reduce memory usage. Loaded Objects now: 773.
Total: 2.270417 ms (FindLiveObjects: 0.179357 ms CreateObjectMapping: 0.013432 ms MarkObjects: 2.010467 ms DeleteObjects: 0.060049 ms)

<RI> Initialized touch support.

<RI> Initialized touch support.

<RI> Initialized touch support.

<RI> Initialized touch support.

<RI> Initialized touch support.

<RI> Initialized touch support.

<RI> Initialized touch support.

<RI> Initialized touch support.

<RI> Initialized touch support.

<RI> Initializing input.

<RI> Input initialized.

Launched and connected shader compiler UnityShaderCompiler.exe after 0.08 seconds
Created GICache directory at C:/Users/Shane/AppData/LocalLow/Unity/Caches/GiCache. Took: 0.015s, timestamps: [9.559 - 9.574]
Issue TrimJob to reduce GI Cache size to maximum 10GB at: 'C:/Users/Shane/AppData/LocalLow/Unity/Caches/GiCache'
[00:00:01] Enlighten: Precompute started.
[PathTracer] Issuing atlassing job. Atlas hash: bc06a9703e5ae257241f86e6e5e9cb62, width: 1024, height: 1024
[00:00:01] Enlighten: Finished 1 Layout Systems job (0.00s execute, 0.00s integrate, 0.06s wallclock)
[00:00:01] Enlighten: Finished 1 Tetrahedralize Probes job (0.00s execute, 0.00s integrate, 0.06s wallclock)
[00:00:01] Enlighten: Precompute took 0.115797 seconds.
Enlighten scene contents: 0 geometries. 0 instances. 0 systems. 0 probe groups. 0 cube maps. Scene is up-to-date.
[00:00:01] Enlighten: Bake started.
[PathTracer][LP] Issuing deduplication and tetrahedralization job. Combined: 80257199cfa681a16be5e09b3c2208f4, tetrahedralized probes: 00000000000000000000000000000000, non-tetrahedralized probes: 00000000000000000000000000000000, dependencies: 00000000000000000000000000000000
Setting up 4 worker threads for Enlighten.
Thread -> id: 20fc -> priority: 1
Thread -> id: 2368 -> priority: 1
Thread -> id: 17d0 -> priority: 1
Thread -> id: 1eb8 -> priority: 1
[PathTracer][LP] Integrating deduplicated and tetrahedralized probes for hash 80257199cfa681a16be5e09b3c2208f4.
[00:00:01] Enlighten: Finished 1 Bake Runtime job (0.09s execute, 0.00s integrate, 0.11s wallclock)
[00:00:01] Enlighten: Bake took 0.105378 seconds.
[PathTracer] Common reset.
[PathTracer] Lightmap reset.
TrimDiskCacheJob: Current cache size 10204mb
[PathTracer][LP] Light probes reset.
[PathTracer] building lightmap data asset.
[00:00:07] Enlighten: Reflection Probes started.
[00:00:07] Enlighten: Finished 1 Ambient Probes job (0.00s execute, 0.00s integrate, 0.05s wallclock)
[00:00:07] Enlighten: Finished 1 Reflection Probes job (0.00s execute, 0.00s integrate, 0.05s wallclock)
Refresh: detecting if any assets need to be imported or removed ... Refresh: elapses 0.010910 seconds (Nothing changed)
Refresh: detecting if any assets need to be imported or removed ... Refresh: elapses 0.008636 seconds (Nothing changed)
Refresh: detecting if any assets need to be imported or removed ... Refresh: elapses 0.013283 seconds (Nothing changed)
Refresh: detecting if any assets need to be imported or removed ... Refresh: elapses 0.009118 seconds (Nothing changed)

 

Based on the documentation here it says that the minimum required version is 2018.1 so PM doesn't come with your Unity version.

 

Ok thanks. I have seen other theads and a Unity blog post stating that it comes with 2017.2 and later:
https://blogs.unity3d.com/2018/05/04/project-management-is-evolving-unity-package-manager-overview/

Although it looks like it was just a behind the scenes thing until they added the PM GUI in 2018. So it seems all is well then.

I just installed 2018.3.1f1 and PM is in fact there. However, we are forced to use 2017.4.16f1 for our project.

How can I do the equivalent of clearing a package in the modern PM GUI? I already tried deleting the cached package files in my AppData>Local>Unity folder.