Sometimes Editor doesn't open on windows 10

OS : Windows 10 64bit
RAM: 32 GB
SSD : 512 GB
Editor: Unity3d 5.5.03f

First of all, if i click the unity icon, editor project selector show up normally.
but if I try to open any project, no matter how long i wait, editor doesn’t display at all.
However, strangely, if I reboot the computer and open Unity with nothing and open the project, the project will be displayed normally.

and last part of editor.log when doesn’t show is…

Registering platform support modules:

Platform assembly: C:\Program Files\Unity_5_5\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.Compiler.dll (this message is harmless)

Platform assembly: C:\Program Files\Unity_5_5\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.dll (this message is harmless)

Platform assembly: C:\Program Files\Unity_5_5\Editor\Data\Mono\lib\mono\2.0\Boo.Lang.Parser.dll (this message is harmless)

Platform assembly: C:\Program Files\Unity_5_5\Editor\Data\Mono\lib\mono\2.0\UnityScript.Lang.dll (this message is harmless)

Registered platform support modules in: 0.0440131s.

Native extension for WindowsStandalone target not found

Native extension for Android target not found

Validating Project structure … 0.000734 seconds.

Refresh: detecting if any assets need to be imported or removed … Refresh: elapses 0.002519 seconds (Nothing changed)

Please help me ~

OS : Windows 10 64bit
RAM: 16 GB
HDD : 200 GB (Unity has it’s own partition)
Editor: Unity3d 5.5.2f1(64-bit)

I run into a similar problem, though for me in never opens (although it creates a background process)

sadly, no log is created

i already tried using “netsh winsock reset” in the command prompt in admin mode, sadly, in vain.

Any help is appriciated.

I get this as well on a fresh new install of windows 10…

Did anybody solved the problem?
Would be very nice for any hint :slight_smile:

Thanx, Matthias