README: Added notice about Windows 7 and required KB update

https://technet.microsoft.com/en-us/library/security/3033929 required on Windows 7, otherwise UsbDk driver's signature is not recognized properly and OS fails to load driver. Signed-off-by: Yuri Benditovich <[email protected]> Signed-off-by: Dmitry Fleytman <[email protected]>
sanyaade-teachings · Apr 3, 2017 · 6863d52 · 6863d52
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diff --git a/README.md b/README.md
@@ -33,3 +33,10 @@ desired configuration.
 
 Use UsbDkController.exe to install/uninstall and verify basic operation.
 Run UsbDkController.exe without parameters for command line options.
+
+## Known issues
+
+* Installation on 64-bit versions of Windows 7 fails if security update
+  [3033929](https://technet.microsoft.com/en-us/library/security/3033929)
+  is not installed. Reason: UsbDk driver is signed by SHA-256 certificate. Without this update
+  Windows 7 does not recognize the signature properly and fails to load the driver.