Install failed: Validation Failed

Unity Engine
,
1

the title is the error (
Install failed: Validation Failed**)**
how do i fix this?

7363667--897158--Screen Shot 2021-07-26 at 4.04.12 PM.jpg
7363667--897158--Screen Shot 2021-07-26 at 4.04.12 PM.jpg1920Ă—1080 357 KB

14 Likes
Unity Hub Download Archive
The state of 3.7.0 is unusable
2

I have the same exact issue installing the 2018.* editor

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3

Quit the Unity Hub from the icon tray (the thing bottom right) and relaunch the Unity Hub as administrator.
This is apparently an issue with the new hub beta. [Someone shared this solution in the “Share your Unity Hub 3.0 Beta Feedback Here” thread.]( Share your Unity Hub 3.0 Beta Feedback Here page-5#post-7369118)

It worked for me, if it doesn’t work for you close it from the task manager and try opening it as admin again. If the error persists, maybe there’s some hope in the official thread I posted right there!

117 Likes
4

Thanks @RogerFK this fixed the issue for me!

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5

Thanks @RogerFK , that was a big help!

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6

Thanks @RogerFK ,

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7

Omg, this is not fixed yet…
Thanks @RogerFK

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8

Any updates on this? Just tried installing 2020.3.18 using Unity Hub 3.0.0-beta.4 and it fails to install Documentation, Android Build Support, and OpenJDK with all failing with the same “Install failed: Validation Failed” error message. Tried running Unity Hub as administrator as suggested, but no luck.

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9

Running into the same issue on mac. This is the first result that pops up from Google.

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10

I wound up going back to Unity Hub v2.4.5 and the install went fine. I’m guessing the issue is only in the v3 beta.

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I had this issue with the new hub, then went back to 2.4.5 where it worked for a day and the next day something corrupted and it wouldnt open so I wanted to reinstall it and now Im getting the same problem with the old hub?

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@RogerFK goated

13

Same here.

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run unity hub as admin is the key

1 Like
15

Woah fixed for me. What a dumb issue ngl

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Thanks @RogerFK , it worked for me

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I’ve just spent the last couple of days trying to solve this (technically finding out that the Android SDK/NDK and OpenJDK weren’t installed). I found this thread tonight and I tried running Hub as Administrator, but that didn’t work for me.

The only Antivirus I have running on my machine is Windows Defender. I tried disabling that and it didn’t work either.

It was only after I had temporarily disabled UAC and ran the install that I was able to install the SDK/NDK/JDK to run the Unity install then ran the install. The install went through fine. Set UAC to what I had it at before (one down from the top) and Unity is running fine and not reporting that and of the Android SDK’s are missing.

In theory, I thought the run as administrator should have done the same as what I did with UAC…

2 Likes
18

How do you do that?

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Thanks @RogerFK , it works!

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On the mac the problem for me was, that the folder was not writable. I changed the owner of the directory to my user and the installtion worked.

For me it was:
sudo chown mike:wheel /Applications/Unity/Hub/Editor

20 Likes