Error building Player: Extracting referenced dlls failed. (21329)

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1

I added some DLLs to my assets/plugins folder and I use them in my code.

The code works fine and the DLLs work when I play the game inside the editor.

But as soon as I compile the build into a standalone version I get this error

Error building Player: Extracting referenced dlls failed.

anyone have an idea on how to fix that.

The DLLs are only compatible for windows, but that is ok because Its for a special purpose program that will only ever be run on a windows platform.

I am building it with the target platform being windows.

I am also facing the same issue got error after changing the compatibility from ".net 2.0 subset" to ".net 2.0" Error building Player: SystemException: 'System.Net.Sockets' are supported only with Unity Android Pro. Referenced from assembly 'Mono.Data.Tds'.

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8 Answers

8
3

turns out Edit > Project Settings > Player > Optimization

change compatibility from ".net 2.0 subset" to ".net 2.0"

Thank you. I had this issue while trying to use System.Data for Mono.Data.Sqlite.

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I am also facing the same issue got error after changing the compatibility from ".net 2.0 subset" to ".net 2.0" Error building Player: SystemException: 'System.Net.Sockets' are supported only with Unity Android Pro. Referenced from assembly 'Mono.Data.Tds'.

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Thank you God I had the same problem as XaeroDegreaz. You truly are a hero

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2

Very often if you're playing right before building, it'll lock the dlls, making it difficult to move them into the build.

If that happens, just relaunch unity and build again, without hitting play

I am having this issue but I am already set to .net 2.0 Any other suggestions?

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5

Perfect!
Changing “.net 2.0 subset” to “.net 2.0” in Edit > Project Settings > Player > Optimization.

4

I have the same problem, I added the Database dll’s and it doesn’t build and say me the same error when I try to build.

I have set the compatibility to “.net 2.0” too

6

Perfect! Changing “.net 2.0 subset” to “.net 2.0” in Edit > Project Settings > Player > Optimization. but i’ve this error after
Error building Player: SystemException: ‘System.Net.Sockets’ are supported only with Unity Android Pro. Referenced from assembly ‘Mono.Data.Tds’.

If only the error message told you the problem, and the solution...

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7

Perfect solve, Change Play Setting: “.net 2.0 subset” => “.net 2.0”.

8

The Dlls you added are conflict with Unity inner Dlls. Because they have the same namespace.

9

He said is right!That’s not a problem anymore!