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'Failed to enable .NET Framework 3.5' error during Editor installation



During Editor installation I'm getting 'Failed to enable .NET Framework 3.5: Unity might nor run after the install has completed.' error message.
Getting this for 5.5.1f1 and 5.6.0b6, on clean Win 8.1 (new installation with default updates).

Doesn't repro on 5.4.4p2 and 5.3.7p4

Comments (14)

  1. d1favero

    May 11, 2017 00:35

    Not resolved.

  2. scortillion

    Apr 01, 2017 18:41

    This is NOT resolved so WHY is voting disabled?!!!!! FIX THIS!

  3. talheet

    Mar 23, 2017 16:54

    I had the same problem with mine. When I try and run Unity, I'm getting an error about jain files it can find and a crash bug report submission form opens up instead. My suggestion:

    1) Either the latest versions are what contain the glitches OR

    2) No version will install on Windows 10 or later so:

    A) Downgrade to an earlier version of Windows

    B) Install an older version of Unity or wait until Unity release a fix on this issue

  4. foozlebobs

    Mar 16, 2017 20:47

    This is not resolved, I'm still getting this on Unity 5.5.2f1 (64-bit), windows 8.1

  5. kamran-bigdely

    Mar 11, 2017 02:14

    forgot to say that I'm running Windows 10.

  6. kamran-bigdely

    Mar 11, 2017 02:13

    It's not resolved for me. I was installing Unity 5.5.2f1 (32bit) and was prompt by this error.

  7. SteveRogers74

    Mar 02, 2017 23:48

  8. Sk8terBOSS

    Mar 01, 2017 21:51

    It says the issue has been resolved but I see no answer here.

  9. Sk8terBOSS

    Mar 01, 2017 21:50

    Has it been resolved yet because I really need unity and I have tried literally everything.

  10. limmerox

    Feb 28, 2017 19:33

    I also have this issue, what is the fix?

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