Windows Rdp Protocol

MS-RDPBCGR: Remote Desktop Protocol: Basic Connectivity and Graphics Remoting. 4/6/2021; 5 minutes to read; v; In this article. Specifies the Remote Desktop Protocol: Basic Connectivity and Graphics Remoting, designed to facilitate user interaction with a remote computer system by transferring graphics display information from the remote computer to the user and transporting input from the. Since the release of Windows XP, all versions of Windows use the remote desktop protocol, or RDP. This proprietary software allows the operating system to show images from other computers across a shared network. In layman's terms, it allows you to access a computer on the same network but in. RDP and AVC/H.264 The graphics compression (codec) standard which has been used by RDP for a couple of releases is the ITU-T H.264 codec (also known as MPEG-4 AVC (Advanced Video Coding)). The benefit of this codec is that it is widely available in hardware so that CPU intensive encoding and decoding can be offloaded to a separate hardware block.

How to Configure RDP (Remote Desktop Protocol) on Windows Server This article demonstrates how to enable the Remote Desktop using Windows Graphical User Interface (GUI) on a server running Windows Server 2008 to Windows Server 2016.

There are numerous reasons behind the use of remote desktops, which play a crucial role in today’s IT software ecosystem. If you’re providing support services for desktops and laptops, working with virtual servers or applications, or working in a company in which the offices are distributed nationally or internationally, you’ll be using remote desktop software.

Windows systems come with a built-in protocol for remote connections. Microsoft Remote Desktop Protocol (RDP) provides a graphical interface through which users can connect to a remote computer via a network connection. However, there are now several RDP alternatives on the market, designed to address potential functionality gaps. My top recommendation for a remote desktop alternative is SolarWinds® Dameware®, offering an on-premises and a cloud version, both designed to facilitate the easy handling of remote desktop issues.

What Is RDP?

RDP, short for Remote Desktop Protocol, is a protocol developed by Microsoft. It allows you to connect to another computer using a graphical user interface, so you can interact with the remote machine. You can control a remote desktop session and delete or copy text between applications running on the host machine and the guest machine. This helps with remote troubleshooting and issue resolution, so IT staff won’t need to go directly to the computer experiencing the problem.

However, with the rise of cybercrime have come warnings about the security of RDP. Moreover, several RDP alternatives have appeared on the market, many of which offer much more in the way of capabilities depending on your specific needs. If you’re looking for an alternative to Remote Desktop Protocol, consider the options below.

Best Remote Desktop Alternatives

Dameware Remote Support is a significant upgrade from RDP, designed to provide all of the same features as the Microsoft protocol along with added features that help enhance problem resolution and cybersecurity on remote devices. Like RDP, DRS makes it easy to connect remotely to other computers. With additional features built to go beyond those in RDP, DRS makes for a comprehensive and easy-to-use remote desktop connection manager alternative.

Like RDP, DRS offers multi-platform remote access, with support for Mac, Windows, and Linux computers. In an enterprise setting, for example, it can work across your Windows desktops, Linux servers, and Mac devices staff may connect with from home. That includes providing access to computers from Android and Apple devices including tablets, which are not supported in RDP.

Both RDP and DRS offer the ability to connect over both the internet and LAN. This is particularly important in DRS since this, along with the tool’s other features, can help facilitate straightforward troubleshooting. With both DRS and RDP, you can remotely reboot entire systems or stop services and processes if something is causing the system to fail. DRS is designed to go beyond that, though—it includes system tools that allow you to fix problems on a computer you’re connected to remotely without having to interrupt the user’s session. DRS, like RDP, also lets you directly copy and paste—or delete—text in applications between the host and guest machine.

Dameware Remote Support offers a free trial for up to 14 days.

Another good option to consider, particularly if you are working in a cloud-based IT environment, is Dameware Remote Everywhere. DRE is in some ways the same tool as DRS, but it offers slightly different features.

Windows Rdp Protocol Software

First, DRE is designed for use in the cloud, which means it is accessible from any compatible device with internet connection. RDP also connects to remote devices over the internet; however, a distinction between the two tools may arise when it comes to speed. While DRE has a particular focus on speed, with remote connections typically established within eight seconds, RDP typically has slower connection times.

DRE also includes additional features for taking screenshots and recording during remote sessions and connecting with the user through VoIP or video call. RDP doesn’t natively include these features, with the only way to record or take screenshots during remote sessions is by implementing outside tools and procedures.

Dameware Remote Everywhere offers a free trial for 14 days.

Royal TS provides support for RDP and other connection protocols, including VNC, SSH, FTP and SFTP, and connection through web-based interfaces. Like other professional tools, it includes credentials management and sharing features, so you don’t need to log in repeatedly. It also provides remote troubleshooting capabilities.

One of the unique features of Royal TS is it can create command tasks and key sequence tasks, which allow you to create your own tasks and automate parts of your troubleshooting processes. For example, ping and traceroute are built in, and you can automate repetitive tasks, so you can execute them as soon as a connection is established.

Royal TS distinguishes itself from RDP when it comes to credential allocation. While RDP lets you save and share credentials between teammates, it does not let you save credentials tied to a remote desktop gateway. Not only does Royal TS let you create objects and folders and dynamically allocate credentials, it also lets you link folders and connections to inherit credentials. These features are designed to facilitate strong access and security measures.

Royal TS offers a free download of its “Lite” version, which allows up to 10 connections and 10 credentials. The paid version is also available through the developer’s website.

If you’re looking for an RDP alternative specifically for use with Mac computers or mobile devices, Edovia produces many products, including several versions of Screens.

Screens iOS allows you to control other computers from your iPhone or iPad, using an SSH connection. It can connect to Mac, Linux, Raspberry Pi, and Windows PCs, using the Screens Connect app. You can view the current session (e.g., for troubleshooting), or start a new session.

Screens Mac provides the same capabilities as Screens iOS, but from Mac OS systems.

There is a free trial of Screens Mac, and a free version, called Screens Express, with limited usage for specific circumstances. Screens Mac is downloadable through the Edovia website. You can buy Screens iOS from the App Store.

Terminals is an open-source remote desktop manager intended to manage the problem of controlling multiple connections simultaneously. It integrates RDP as one of the protocols it supports, but also works with VNC, VMRC, SSH, Telnet, RAS, Citrix ICA, and HTTP and HTTPs.

It includes several basic features to make the remote connection experience smoother, including a multi-tab interface, resizable windows, customizable toolbars, and a connections history, so you can see which machines you have connected to recently. You can also search by server name and look at protocol notes. This tool is high-quality, but basic, and it may not be suitable for a large enterprise needing a greater set of features for IT support and troubleshooting management.

You can download Terminals for free on Github.

As a free tool, Terminals is a mRemoteNG alternative. For a comparison of mRemoteNG vs. Terminals, look at both repositories in Github to view the documentation, as it gets a little technical.

How to Choose an RDP Alternative

There are several factors behind choosing a good RDP alternative, but your decision will in large part depend on the number of connections you’re dealing with, the type of information in your environment (e.g., if it’s sensitive and needs extra security), and the size of your enterprise.

A free or open-source tool might be suitable in a low-risk, small business environment, in which case Terminals is a good choice. For a large enterprise or a company with sensitive data, invest in a professional tool such as Dameware Remote Support or Dameware Remote Everywhere.


Microsoft has released a few security patches in March 2018 to fix the vulnerabilities for the CredSSP (Credential Security Support Provider Protocol) used by the Remote Desktop Protocol in Windows Server. But a recent update has made CredSSP Authentication error in RDP and caused hindrance to many users.

Microsoft pushed the update of May 2018 to harden the security by making it mandatory for both client and server computers to have the update installed. This resulted in windows servers not accessible via RDP for many users and made many to reboot their servers to fix the issue thinking it as a server side issue. This blog helps you on how to fix the CredSSP Authentication error in Remote Desktop Protocol (RDP).

Windows rdp protocol example

What is CredSSP?

“CredSSP” or “Credential Security Support Provider Protocol” is a security support provider which helps to securely delegate user credentials from a client computer to a windows server by using TLS (Transport Layer Security) as an encrypted pipe.

Why the update?

The update in May is made to correct how CredSSP validates requests during the authentication process. Microsoft has found a credssp error in rdp and found a fix for the vulnerability by mandatory requiring to update both the client and server computer to work properly.

An authentication error has occurred.

The function requested is not supported

Windows Rdp Download

Remote computer: <computer name='>

Rdp Protocol Security

This could be due to CredSSP encryption oracle remediation.
For more information, see the link

This error is due to the windows update not installed either on the server or on the client computer.

How to fix it?

To fix the issue, you need to uninstall the update and roll back to an older version. But rolling back to an old version is not a best practice. You can fix this by changing the group policy in the local computer to use the vulnerable setting

1. Go to “Run” (Win Key + R)
2. Type “gpedit.msc” and click “Enter”

3. Go to Computer Configuration -> Administrative Template -> System -> Credentials Delegation -> Encryption Oracle Remediation

4. Double Click on “Encryption Oracle Remediation”, choose “Enable” and change protection level to “Vulnerable” and click “Apply” or “Ok”

You can also fix the issue with the help of a Windows Registry Editor

1. Open Windows Registry by typing “regedit” in “Run”
2. Navigate to Computer -> HKEY_LOCAL_MACHINE -> SOFTWARE -> Microsoft -> Windows -> CurrentVersion -> Policies -> System -> CredSSP -> Parameters

3. Doubleclick on the Key “Allow Encryption” Change the value to “2”

This method also gives the same output as achieved through the Group Policy Editor. You may use the below table from Microsoft to compare the installed windows update for CredSSP.

Windows Rdp Port

Operating systemTSpkg.dll version with CredSSP updateOperating system TSpkg.dll version with CredSSP update CredSSP update
Windows 7 Service Pack 1 / Windows Server 2008 R2 Service Pack 1 6.1.7601.24117 KB4103718 (Monthly Rollup)6.1.7601.24117KB4103718 (Monthly Rollup)
KB4103712 (Security-only update)
Windows Server 20126.2.9200.22432KB4103730 (Monthly Rollup)
KB4103726 (Security-only update)
Windows 8.1 / Windows Sever 2012 R26.3.9600.18999KB4103725 (Monthly Rollup)
KB4103715 (Security-only update)
RS1 – Windows 10 Version 1607 / Windows Server 201610.0.14393.2248KB4103723
RS2 – Windows 10 Version 170310.0.15063.1088KB4103731
RS3 – Windows 10 170910.0.16299.431KB4103727

Windows Rdp Client

For any technical assistance to fix CredSSP Authentication Error in RDP

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Microsoft Rdp Protocol

  • If if find KB missing, can i instal the KB
    KB4103725 (Monthly Rollup)

    KB4103715 (Security-only update to fix the error.

    Does it required a mandatory reboot

    • You can install any of the mentioned update from Microsoft update catalog. You will have to reboot the system after installing the update

  • Can you please let me know which OS version you are using? And please clarify if only this particular option ‘credential delegation’ is missing from your group policy settings. In this case, please run the following CMD command (open the command prompt as administrator) to create the CredSSP parameter by editing the registry:

    REG ADD HKLMSoftwareMicrosoftWindowsCurrentVersionPoliciesSystemCredSSPParameters /v AllowEncryptionOracle /t REG_DWORD /d 2

    Please give a try and let us know how it works for you.