Android Question adb.exe Unknown Publisher [SOLVED - It's normal]

[Art]

After upgrading B4A from 6.0 to 8.50, I tried to compile and run in debug mode a little simple application previously produced by B4A 6.0 and I get this Security Alert from Windows 7 64bits:
C:\Android\platform-tools\adb.exe -> Unknown Publisher.
Is this normal?

Before upgrading, I installed Java JDK v8 and the Ready to run SDk (https://www.b4x.com/android/forum/threads/ready-to-run-sdk.99780/).
I also ran B4A Sdk Manager (C:\Android\tools\bin\sdkmanager.bat) and installed all recommended packages.

java -version:
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)

B4A Paths:
javac C:\Program Files\Java\jdk1.8.0_191\bin\javac.exe
android.jar C:\Android\platforms\android-28\android.jar
additional libraries: C:\Basic4Android\AddLibraries

Thank you.

 

[Erel]

It is normal. adb.exe is not signed.