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 Dr.Bob's Delphi 10.3 Rio News
Note:  This section of Dr.Bob's Delphi Clinic is devoted to news about Delphi 10.3 Rio.

2020/02/25 - RAD Studio 10.3.3 Midas.dll Patch
This patch addresses the following issue: An issue addressed by a previous hotfix (C++Builder 10.3.3 Threading and TLS Patch) affected Midas. The DLL has been rebuilt.

2020/02/25 - Delphi 10.3.3 Open Array Patch
This patch addresses the following issue: RSP-23939 Access violation when calling an inherited function with an open array parameter in Rio.
For the Delphi Win64 compiler, calling an inherited method without specifying the name when the method has an open array parameter can result in a crash.

2020/01/30 - RAD Server Docker Technical Guide (PDF)
This 50+ page technical guide provides an overview on RAD Server, how to install Docker containers and set up a remote RAD Server database, how to license the RAD Server Docker container, use the pre-built image on Docker Hub and more. RAD Server is a turn-key Application Server based on REST architecture that provides a robust back-end platform for Delphi and C++ developers, including multiple pre-built applications services and integration capabilities.

2020/01/17 - RAD Studio 10.3.3 iPhone XS and XR Debugging Patch
This patch addresses the following issue: Unable to debug an application on an iOS device using the A12 processor (arm64e), including the iPhone XS and XR

2020/01/10 - RAD Studio 10.3.3 Indy Server SSL Certificate Patch
This patch addresses the following issue: Web Server applications built with the Indy library (for Windows) are unable to load a SSL certificate. The issue was reported on Quality Portal as RSP-27144

2020/12/20 - RAD Studio 10.3.3 Android Services Patch
This patch addresses an issue that prevented an Android service running because it could not load its native library. This only affected applications packaged as Android App Bundles. The base APK generated from an AAB has the extractNativeLibs manifest attribute set to false. In this case, the Package Manager does not extract the library to the filesystem when installing the application, causing the Android service to pass the dynamic linker an incorrect absolute path to the native library.

2020/12/16 - RAD Studio 10.3.3 Android Debugger Patch
This patch addresses the following issues:

plus a number of internally reported issues including: issues evaluating, connecting to an Android device, slowdown of a debugged app when the debugger is attached, handling very large source files, switching threads from the Threads view, displaying memory in the CPU view, and others.

2020/12/13 - RAD Studio 10.3.3 IDE and VCL Patch
This patch addresses the following issues:

2020/12/05 - RAD Studio 10.3.3 iOS Linking Patch
This patch addresses the following issue: RSP-23698: dsymlink gives abnormal program termination
When linking the debug build of an iOS app, dsymlink would fail with an assertion and abnormal program termination. Depending on your settings, you may also see many warnings emitted before the assertion and crash.

2020/11/21 - RAD Studio 10.3.3 iOS 13 Dark Theme Patch
This patch addresses the following issues: Applications built for iOS 13 with RAD Studio 10.3.3 require the user to restart their FireMonkey iOS application on their iOS device after switching between the iOS light and dark theme in iOS settings.

2019/11/16 - RAD Studio, Delphi, C++Builder 10.3.3 Web Install
Web Installer for RAD Studio, Delphi, C++Builder 10.3.3. For first time users or if you have trouble downloading this, please visit, and download from there.

2019/01/21 - RAD Studio 10.3.0 C++ Toolchain Hotfix
This patch addresses a number of issues in the C++ toolchain in C++Builder 10.3, including compiler issues and RTL/STL issues.

2018/12/14 - December 2018 RAD Server Database Migration Patch for 10.3
RAD Server offers automatic migration of its database. The version in 10.3 can successfully migrate the database from 10.2.3, but not from older versions, limiting the migration of existing projects (in development or already deployed). This patch fixes the problem, allowing automatic migration from older versions of the database in the RAD Server (EMS) Upgrade Wizard.

2018/12/14 - December 2018 IDE Patch for 10.3
This patch fixes a few issues related with the RAD Studio IDE in 10.3, including problems building an UWP app for the Windows Store, missing application configuration options in C++Builder, the lack of DBExpress Enterprise drivers in Data Explorer and an incorrect configuration for the Android NDK.

2018/12/05 - December 2018 Missing Files Patch for 10.3
This patch resolves issues of missing PCRE obj files if you do not install DUnitX and missing java source files for some of the new enhancements.

2018/11/25 - BDE Installer for RAD Studio, Delphi, C++Builder 10.3 Rio
After you have installed the BDE, you will also need to install the components into the 10.3 IDE if you want to work with the components at design time. Read the article at

2018/11/12 - RAD Studio 10.3 Released
10.3 Rio is now available. Itís a free upgrade for all active Update Subscription customers, read What's New for more details. You can download the ISO Installer or the Getit-based Web Install.

Licenses are now sold with one year subscription included. Developers from the Eurozone can order an Upgrade or New User license from my webshop.

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