From d7d403a0d636f2140cbea8b08b4ad6680737bb62 Mon Sep 17 00:00:00 2001
From: Alex Ghiondea <AlexGhiondea@users.noreply.github.com>
Date: Wed, 6 Jun 2018 11:05:40 -0700
Subject: [PATCH] =?UTF-8?q?Create=20623552-BCL=20Higher=20assembly=20versi?=
 =?UTF-8?q?ons=20that=204.0.0.0=20for=20System.IO=E2=80=A6=20(#772)?=
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* Create 623552-BCL Higher assembly versions that 4.0.0.0 for System.IO.Compression.ZipFile cannot be loaded without a binding redirect.md

Add a new known issue for .NET Framework 4.7.1.

* Update 623552-BCL Higher assembly versions that 4.0.0.0 for System.IO.Compression.ZipFile cannot be loaded without a binding redirect.md

Update per PR feedback

* Update 623552-BCL Higher assembly versions that 4.0.0.0 for System.IO.Compression.ZipFile cannot be loaded without a binding redirect.md
---
 ...ot be loaded without a binding redirect.md | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 releases/net471/KnownIssues/623552-BCL Higher assembly versions that 4.0.0.0 for System.IO.Compression.ZipFile cannot be loaded without a binding redirect.md

diff --git a/releases/net471/KnownIssues/623552-BCL Higher assembly versions that 4.0.0.0 for System.IO.Compression.ZipFile cannot be loaded without a binding redirect.md b/releases/net471/KnownIssues/623552-BCL Higher assembly versions that 4.0.0.0 for System.IO.Compression.ZipFile cannot be loaded without a binding redirect.md
new file mode 100644
index 0000000..bfd9944
--- /dev/null
+++ b/releases/net471/KnownIssues/623552-BCL Higher assembly versions that 4.0.0.0 for System.IO.Compression.ZipFile cannot be loaded without a binding redirect.md	
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+# Assembly versions higher than 4.0.0.0 for System.IO.Compression.ZipFile cannot be loaded without a binding redirect
+
+## Symptoms
+
+When building an application that targets .NET Framework 4.7.1, if you reference a .NET Standard 1.x library that uses types from the ZipFile assembly, a runtime error like the following results:
+
+```
+Error: Exception: System.IO.FileNotFoundException, Could not load file or assembly 'System.IO.Compression.ZipFile, Version=4.0.3.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The system cannot find the file specified.
+```
+
+## Cause
+
+The issue is caused by a bug in the runtime unification table for .NET Framework 4.7.1 for this assembly. The bug prevents the unification of the 4.0.3.0 version of the assembly to the 4.0.0.0 version that is present on the machine.
+
+## Impact
+
+This problem occurs when building an application that targets .NET Framework 4.7.1 and consumes .NET Standard-based assets.
+
+## Workaround
+
+To address this problem, you can manually add the following binding redirect in your application's config file:
+
+```xml
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.IO.Compression.ZipFile" publicKeyToken="b77a5c561934e089" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.3.0" newVersion="4.0.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+```
+
+## Resolution
+
+This problem is fixed in [.NET Framework 4.7.2](http://go.microsoft.com/fwlink/?LinkId=863281).