License activation issues/Welcome Screen issues
There are a few known issues that can occur with the Welcome screen when starting Unity on all operating systems.
If you have one of these problems;
Try the following solutions;
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Check the number of Activations on your license, Pro Licenses have a maximum of two activations per License Key. Deactivate licenses if needed and reactivate through the editor Manage your license | Unity Hub | 3.0
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Delete your ULF (Unity License File) and activate again through the Editor
ULF is Located;
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OSX: /Library/Application Support/Unity/Unity_v5.x.ulf (OS X)
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PC: C:ProgramData/Unity (If the files are hidden, you need to click View and tick the Hidden Items check box.)
Problem: UI on Welcome screen not displaying correctly
Solution: This is caused by a specific virus on Windows 7 that affects .html. Use anti-virus software to run a scan and remove the virus.
Problem: ‘No Network Connection’ warning/I’m using a Proxy
Solution:
Pro Users: Use manual activation
Personal Users: Click the Smiley face in the top right.
Problem: ‘Service not available, please try again later.’
Solution:
This could be due to a number of things, this message would normally show when there is something wrong with our servers. If the error persists for longer than 30 minutes, this won’t be the case. Check your network connections & DNS also ensure Unity is white listed on any antivirus or firewalls.
If you are connecting through a Proxy, manually activate your license.
All of the above did not help/My welcome screen is blank
You can launch Unity, create projects, load project and do a number of things from the Command Line (PC) or Terminal (OSX). Check our command line arguments.
Bypassing the welcome screen to launch Unity and create/load a Project
Windows
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Go to Run;
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Type;
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On a 64bit Windows system;
C:\Program Files\Unity\Editor\Unity.exe -createProject
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On a 32bit Windows system;
C:\Program Files (x86)\Unity\Editor\Unity.exe -createProject
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This will open the Editor and create a new project, the Welcome Screen will still be present on top of the Editor screen, close the Welcome Screen and the Editor will remain.
OSX
The needs to be replaced with the location you want a folder to be created without the <> This includes the folder name.
To open an existing project:
Replace;
-createProject
With;
-projectPath