Search Unity

  1. Welcome to the Unity Forums! Please take the time to read our Code of Conduct to familiarize yourself with the forum rules and how to post constructively.
  2. We have updated the language to the Editor Terms based on feedback from our employees and community. Learn more.
    Dismiss Notice

Official Troubleshooting the Editor

Discussion in 'Editor & General Support' started by Aurore, Aug 13, 2015.

Thread Status:
Not open for further replies.
  1. Aurore


    Director of Real-Time Learning Unity Technologies

    Aug 1, 2012
    We collected a few common issues users have been experiencing, we're planning to add more to help you solve your problems faster.

    Please visit the Troubleshooting Companion Thread to ask questions about any of these topics.

    Click the links to jump to the relevant post.

    Last edited: Aug 13, 2015
    Dxball and Deleted User like this.
  2. Aurore


    Director of Real-Time Learning Unity Technologies

    Aug 1, 2012
    Windows 10

    If you’re having issues with:

    • Unity not loading

    • Not reaching the welcome screen

    • Receiving the error message “Unity Editor has stopped working”

    • Not being able to activate your license

    Have you tried the following:

    • Clean install of Unity (and in some cases Windows 10)

    • Updated your drivers manually, Windows 10 could have caused a memory leak

    • Installed the 32-bit version of the Unity Editor

    • Cut and paste the hidden folder C:\ProgramData\Unity folder to another drive, delete the folder entirely or just the Unity_v5.x.ulf file in there

    • How to locate your Unity 5.x license file:
    Deleted User likes this.
  3. Aurore


    Director of Real-Time Learning Unity Technologies

    Aug 1, 2012
    Editor crashes on startup for Windows 7/8/10

    Known issues:

    • If using 5.1 (particularly 64-bit install), third party proxy integration can crash Unity at the Project Browser

    • Unity 5.0 used Gecko browser engine (Firefox/Mozilla based), we switched to libcef which is Chromium for 5.1 and something can be interfering with that

    Have you tried the following:

    • Checked if you have any software installed such as Lavasoft Ad-Aware Web Companion, adware like OpenCandy (Windows computers can come with these pre-installed), Qustodio, Nahimic drivers, Astrill VPN or similar

    • Made sure these softwares are disabled (example: for Lavasoft - make sure that "C:\Windows\system32\LavasoftTcpService64.dll" is deleted, in safe mode, or use AdwCleaner)

    • Downloaded the latest version of Unity (or patch release)

    • Opening Unity from the command line

    If the information above does not solve your issues, please create a crash dump file and send in a bug report.

    To create a crash dump file:

    When Unity crashes and you get "Unity Editor has stopped working" dialog, not the Unity crash reporter, don't press "Close program": instead;

    • Open task manager

    • Go to the details tab

    • Find Unity.exe & right click it and press "Create dump file".

    That will create a dump file (might take a few-several seconds depending on your hard drive). You can then open the bug reporter and attach the dump file to the report.
    Deleted User likes this.
  4. Aurore


    Director of Real-Time Learning Unity Technologies

    Aug 1, 2012
    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;

    - License not detected

    - Stuck on ‘Checking license’ screen

    Try the following solutions;

    • 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

    • Delete your ULF (Unity License File) and activate again through the Editor
    ULF is Located;
    • OSX: /Library/Application Support/Unity/Unity_v5.x.ulf (OS X)

    • 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


    Pro Users: Use manual activation

    Personal Users: Click the Smiley face in the top right.

    Problem: ‘Service not available, please try again later.’


    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


    • Go to Run;

    • Type;

      • On a 64bit Windows system;
        C:\Program Files\Unity\Editor\Unity.exe -createProject <path name>

      • On a 32bit Windows system;
        C:\Program Files (x86)\Unity\Editor\Unity.exe -createProject <path name>
    • 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.


    • Open Terminal

    • Type:
      /Applications/Unity/ -createProject <path name>

    The <path name> 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:


    -createProject <path name>


    -projectPath <pathname>
Thread Status:
Not open for further replies.