Unable to create machine catalogue in AWS Error: “You do not have a host with a matching configuration and sufficient capacity”

You may see following error when you attempt to create machine catalog in AWS:

“You do not have a host with a matching configuration and sufficient capacity” “Timed out waiting for: Creating machine ‘Preparation – ABC-TEST-VDI-XY – XXxxxxxxxxxxxxxxxxxxxxx’ with pre-existing ENIs: eni-XXXXXXXXXXXXXXXXX”

The above error is seen while using Dedicated VPC and Dedicated Host on AWS

Later, you may see following error on allocating a Dedicated Host in AWS

Name: MC_CreateMachineCatalogInitialzation

An error occurred. Contact Citrix Technical Support, and provide the transaction ID above.

Exception: DesktopStudio_ErrorId : ProvisioningTaskError ErrorCategory : NotSpecified ErrorID : NoDiskContentTransferService TaskErrorInformation : Terminated InternalErrorMessage : No facility available for disk upload. Unable to create any functioning volume service VMs. Timed out waiting for: Creating machine ‘XenDesktop Temp’ with pre-existing ENIs: eni-xxxxxxxxxxxxxxxxx No facility available for disk upload. Unable to create any functioning volume service VMs. Timed out waiting for: Creating machine ‘XenDesktop Temp’ with pre-existing ENIs: eni-xxxxxxxxxxxxxxxx


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Train at your own pace for a well-paid career in DevOps and blockchain for just $30 – TechRepublic

Blockchain technology on blue background

Image: phive2015, Getty Images/iStockphoto

With tech budgets forecast to keep growing through next year, there really couldn’t be a better time to switch to a brand new career in that lucrative industry. If you’ve been meaning to do just that, but can’t quite decide which field to specialize in, check out this course, Google DevOps & Blockchain Developer Bundle. Best of all, you can train at your own pace and don’t have to take time off from your current job.

If you’d really like to jump right into a career switch, the “DevOps Fundamentals” will have you proficient as an IT specialist by the time you finish it.

Meanwhile, blockchain technology fans have three courses that will take them from beginner to master. Start with “Enterprise Blockchain Bootcamp” to find out how to use this tech to generate extra revenue. In addition to the basics, it will show you where to find high demand, including the biggest corporations, such as IBM, AWS and more.

Then you can start preparing for blockchain architect and developer exams. “Certified Blockchain Solutions Architect (CBSA)” will prep you for the Blockchain Training Alliance Certified Blockchain Solutions Architect certification exam. Not only are the topics thoroughly covered, but you’ll also get an overview of the exam itself and learn what to expect before and after you take it.

You’ll learn all the skills needed to create hyperledgers and lots more in “Certified Blockchain Developer (CBDH).” So, passing the Certified Blockchain Developer—Hyperledger exam should be no problem.

You can really pump up your resume with impressive Google cloud technology certifications. And you don’t need to complete all of the classes to qualify for relevant positions, just take them as you feel ready. The “Google Cloud Platform (GCP) Certification Training” class will help you pass the first exam. Then you’ll be ready to take “Kubernetes: Containerizing Applications in the Cloud,” “Certified Kubernetes Administrator (CKA)” and the “Certified Kubernetes Application Developer (CKAD)” course.

ITU Online Training has video content that is designed and taught by qualified instructors. All of the classes include a note-taking function, progress trackers and practice exams. The company has garnered awards, such as Cybersecurity Excellence and Best in Biz.

Get the Google DevOps & Blockchain Developer Bundle while it’s available for only $29.99 (Regular price is $792).

Prices subject to change.


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Unable to logon to Citrix Director with error ‘Attempt to connect CCS Failed’ in the Windows Application Log

Customer configured Amazon EC2 load balancer proxy on Director host, the following URI request has been forwarded onto EC2 load balancer via proxy, and EC2 load balancer relay 403 error packet( The HTTP request was forbidden with client authentication scheme ‘Anonymous’)




Hence, authentication failed due to error ‘Attempt to connect CCS Failed’.


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WANdisco Integrates DConE into Permissioned Blockchain Frameworks

New technology offers flawless execution within permissioned blockchain digital ledger technologies such as Hyperledger Fabric and R3 Corda

SAN RAMON, Calif., June 29, 2021 /PRNewswire/ — WANdisco (LSE: WAND), the LiveData company, announced today the availability of its Distributed Coordination Engine (DConE) to provide highly secured and reliable transactionality for permissioned blockchains (i.e. digital ledgers) within the financial sector, and other business critical applications and use cases.

This new use of DConE, the only commercialized version of the Paxos algorithm, will offer a guaranteed fault-tolerant alternative to the Raft algorithm, commonly used in digital ledger technologies such as Hyperledger Fabric and R3 Corda. Serving as the basis of WANdisco’s solutions, DConE has been previously used to provide:

  • Multi-site replication of Subversion and Git repositories

  • The migration and replication of business-critical data to cloud service providers such as Microsoft Azure and AWS

  • Keeping Hadoop-compatible file systems, Apache Hive and Databricks data consistent across on-premises and multi-cloud environments

“After our success in coordinating software collaboration, and LiveData migration and replication to the cloud, we saw an opportunity to provide DConE as a solution for enterprises requiring high availability of their distributed ledgers,” said Dr. Yeturu Aahlad, Co-founder and Chief Scientist, WANdisco. “DConE is based on the Paxos algorithm, which is the gold standard of consensus algorithms. The new application is a natural extension of this unique and powerful technology, and gives blockchain application customers the peace of mind that their systems are guaranteed to never break.”

Dr. Aahlad commercialized the Paxos algorithm to make the internet more efficient, trusted and reliable for business critical use cases. Aahlad and WANdisco’s other co-founder, CEO David Richards, realized the cloud was going to play a huge part in advanced analytics. DConE was created to be the differentiated technology underpinning WANdisco LiveData Cloud Services, the only automated cloud migration platform on the market recommended by Microsoft and AWS for Hadoop-to-Cloud migration.

WANdisco’s patented consensus technology works by requiring the storage points across its network to approve any transaction that may be entered. Multiple transactions can be processed simultaneously enabling a more scalable distributed ledger with shorter lag times for transactions than typical blockchain frameworks.

“We are very excited to offer DConE as a new consensus option for permissioned blockchains and digital ledger technologies,” said Richards. “This new application will continue WANdisco’s mission to deliver technology that empowers customers to benefit from the freedom of data, regardless of location and when it’s needed. We look forward to developing partnerships to further make this technology available in other frameworks.”

About WANdisco

WANdisco is the LiveData company. WANdisco solutions enable enterprises to create an environment where data is always available, accurate and protected, creating a strong backbone for their IT infrastructure and a bedrock for running consistent, accurate machine learning applications. With zero downtime and zero data loss, WANdisco LiveData Platform keeps geographically dispersed data at any scale consistent between on-premises and cloud environments allowing businesses to operate seamlessly in a hybrid or multi-cloud environment. For more information on WANdisco, visit www.wandisco.com.

Media Contact

Josh Turner

Silicon Valley Communications


+1 (917) 231-0550


View original content:https://www.prnewswire.com/news-releases/wandisco-integrates-dcone-into-permissioned-blockchain-frameworks-301321880.html



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Hyperledger Fabric Engineer


Blockchain technology is changing the way individuals and organisations interact with each other. And Quant is leading this revolution. We’ve already developed the world’s first blockchain API Gateway which both connects enterprise applications to DLTs and interconnects DLTs together. Now, we’re building on this platform (called Quant Overledger) to help governments, organizations and individuals across the globe benefit from the true potential of incredibly powerful technology.

Headquartered in London, Quant Network is a member of the Oracle global start-up ecosystem and an Amazon AWS partner.

It’s an exciting mission: developing a technology that is truly changing the way the world connects. But it’s challenging, too. Which is why we’re looking to expand our R&D Team. We need the support of people who not only share our vision but who are intellectually flexible and tenacious; people who revel in problem-solving. People who can think laterally and challenge norms.

The role

This is a mid-level role.


  • Ability to translate high-level requirements into research objectives.
  • Ability to work with minimal supervision in order to be effective.
  • Take an active hands-on approach to all aspects of the research lifecycle including requirements specification, technical design, and when appropriate, prototype development and testing.
  • Communicate to others your progress, and shape how your research can be implemented in production environments.
  • Minimize accumulation of technical debt within any component we design, own or build, utilize cross-DLT standardization when appropriate, and implement optimizations that can increase automation for future development.

Key skills

  • Knowledge of Hyperledger Fabric network technical specification and SDK.
  • Experience in deploying non-local native Fabric Networks (e.g. in AWS, Oracle, Azure)
  • Experience in application development based on Hyperledger Fabric.
  • Experience in chain code development.
  • Programming experience, particularly in NodeJs.
  • Experience with continuous integration and deployment processes, working on both greenfield and existing architectures (including strong Git, GitHub experience).
  • Good written and verbal communication skills – needed for communicating with a wide range of people, both internally and occasionally externally in a professional manner.

Additional Desirable skills/attributes

  • General knowledge of the DLT/blockchain domain, i.e. different implementations, smart contracts, consensus protocols, distributed applications and related cryptography.
  • Experience with another DLT/blockchain, e.g. Corda or Ethereum.
  • A good understanding of microservice architecture/MongoDB/AWS/RPC.
  • Knowledge of any of Docker, Kubernetes, RabbitMq, EMS, Kafka.
  • Golang and/or Java Spring Boot programming experience.
  • Experience of working in a dynamic environment often with shifting priorities.
  • Exposure to Test driven development, behaviour driven development, test automation, secure by design approaches.
  • Exposure to large scale, high volume, multi-threaded and highly distributed systems.
  • Involvement in open-source development and may even contribute to one or more repos.

Personal strengths

  • A self-starter, efficient and innovative.
  • An original thinker.
  • An enthusiastic and able problem-solver.
  • Enthusiastic team player with the ability to lead where appropriate.
  • A keen learner with a strong desire to upskill in a variety of software development techniques.

The team

At Quant, you’ll join a highly engaged and motivated R&D department, working in one of the most genuinely exciting – and challenging – areas of technology today. The R&D team specialises in designing and building the foundations of interoperable DLT applications (e.g. atomic swaps, cross chain transfers and payment channel hubs), which are then passed to our engineering teams for final implementation. Currently, our small teams are 100% remote (temporarily due to Covid-19).

The technology and tools you will be using

Tools: Git, Visual Studio Code, IntelliJ, Postman, Clubhouse and Miro

Tech Stack: Spring Boot, Java, JS and NodeJS.

Platform: Kubernetes, AWS, Oracle

Databases: Mongo and Postgres, amongst others.

Distributed Ledger Technologies: Corda, Hyperledger Fabric, Ethereum, amongst others.

The rewards

Not only will you be working with a small, but rapidly growing, team, in one of the most genuinely exciting areas of technology today, but we are committed to the philosophy of CPD (continuous performance development). This not only helps us to develop team performance that will keep us at the leading edge of the technology but ensures that every employee has the opportunity to maximise personal development and career growth. We also offer a competitive salary and an agile and family-friendly working environment.

The perks

At Quant we are committed to employee physical and mental well-being, not only will you have unlimited access 24/7 to our employee assistance program, but you will also have access to free online fitness classes; free online GP services; healthy eating plans; as well as discounts on other gym memberships and equipment amongst other discounts.

We believe in different

Quant Network is built on the difference. Our technology is different; our vision of connectivity is different; our developers think differently. That’s why we’re committed to diversity and inclusion in the workplace. And it’s not just passive support: empty words to bolster a corporate brand. It’s active support, evidenced by facts such as that our workforce is approximately 50% female, and that we have a truly international team, with over 10 languages spoken. Basically, we welcome anyone who can contribute to helping us achieve our mission – to change the way the world connects.



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Error “XDDS: 2367399E Cannot Create a Catalog Using AWS Host : Image Preparation VM Failed, Message No Facility Available for Disk Upload”


Citrix.Console.Models.Exceptions.ProvisioningTaskException A volume service instance could not be launched in your cloud connection. In Studio, select Hosting in the left pane and then select the cloud connection. Click Test Connection in the Actions pane. The test results should provide additional information.

at Citrix.Console.PowerShellSdk.ProvisioningSchemeService.BackgroundTasks.ProvisioningSchemeTask.CheckForTerminatingError(SdkProvisioningSchemeAction sdkProvisioningSchemeAction)

at Citrix.Console.PowerShellSdk.ProvisioningSchemeService.BackgroundTasks.ProvisioningSchemeTask.WaitForProvisioningSchemeActionCompletion(Guid taskId, Action`1 actionResultsObtained)

at Citrix.Console.PowerShellSdk.ProvisioningSchemeService.BackgroundTasks.ProvisioningSchemeCreationTask.StartProvisioningAction()

at Citrix.Console.PowerShellSdk.ProvisioningSchemeService.BackgroundTasks.ProvisioningSchemeCreationTask.RunTask()

at Citrix.Console.PowerShellSdk.BackgroundTaskService.BackgroundTask.Task.Run()

DesktopStudio_ErrorId : UnknownError

ErrorCategory : NotSpecified

ErrorID : NoDiskContentTransferService

TaskErrorInformation : Terminated

InternalErrorMessage : No facility available for disk upload.”,””


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Dell’s 2021 Server Trends & Observations

With the start of a new year, we can say goodbye to the tumultuous and challenging 2020 – a year that brought about monumental changes in our industry through acquisitions, technology introductions, and of course, a shift to remote work force. No one could have predicted all the changes that happened last year, but now we have an opportunity to look back on how the server trends and technologies detailed by us last year impacted our industry. And as we have done for the past several years, we want to continue our tradition in Dell’s Infrastructure CTO group of highlighting some of the most interesting technology and industry trends we expect to see impacting our server incubation and product efforts this year. These trends were compiled by polling our senior technologists in the server organization, who are looking at the most impactful influences to their workstreams.

When the technologists provided their inputs, the underlying theme that emerged was the desire to life cycle data – curate, transport, analyze and preserve data – in the most effective and secure means, while producing the most efficient business outcomes from the infrastructure. Since the generation of data has continued to increase, customers are looking for ways to leverage third-party services in an integrated offering to allow them to understand how to more quickly analyze and value the right data in the most cost-effective and secure manner. This paradigm has also forced owners of the IT equipment that performs these analyses to ensure they are using the most effective technology integrations. These integrations need to be managed with the minimal amount of operational expenses across a continuum of Edge, Core and Cloud architectures. Finally, 2020 created another challenge to carry forward, which is the ability to adopt new technologies with more remote staff and remote users stressing the infrastructure in means and methods not expected this early in most digital transformation plans.

So, with that introduction, let us provide you the Top Trends for 2021 that are influencing our server technology efforts and product offerings:

  1. aaS becomes the Enterprise theme. As technology velocity continues to rise, enterprise customers deal with constrained budgets and legacy skillsets while still needing to focus on differentiated business outcomes with the most beneficial price/performance and least amount of bring up and maintenance overhead. The options for on-prem Infrastructure aaS offerings allow customers to be nimble and focus on their business value through diverse deployments while maintaining their data security and governance with trusted infrastructure.

  1. Server Growth is Building Vertically. As customers look for the most efficient outcomes from their infrastructure, the industry will continue to see more verticalization and specialization of offerings. Integrated solutions will address packaging and environmental considerations; SW ecosystem enablement and domain-specific accelerators address unique performance and feature requirements that are optimized for specific business outcomes.
  1. More Data, More Smarts. The challenges with data velocity, volume and volatility continue and require continuance of AI/ML adoption for analytics while increased focus on solving data life cycling challenges arises. The integration of data curation models, transport methods, preservation and security architectures with faster analysis will all be key to support and monetize the Internet of Behaviors.
  1. The Emergence of the Self-Driving Server. Customers will start seeing the use of telemetry, analytics, and policies to achieve higher levels of automation in their systems management infrastructure. Similar to the driver assist/autonomy levels of autonomous vehicles, AI Ops capabilities with systems management will usher in the era of moving automated tasks to automated decisions, with implementations showing up in addressing runaway system power and policy advising recommendation engines.
  1. Goodbye, SW Defined. Hello, SW Defined with HW Offload. Application architectures are evolving to create control plane and data plane separation. Control planes stays as a software layer and the data planes move to programmable hardware in the form of service processor add-in-cards which allow bare-metal and containerized applications to run with disaggregated infrastructure software (network virtualization, storage virtualization, GPU virtualization, security services), creating Intent Based Computing for customer workloads.
  1. 5G is Here! Seriously, it is this year. After several years of hype and promises, we will see the proliferation of 5G and with it will come shifts in paradigms around communication infrastructure, remote management models and connectivity that impact server form-factors and features. As businesses develop more edge infrastructure to handle the generation and influx of data, 5G will create the need for customers to reevaluate their edge connectivity and infrastructure management offerings to take advantage of 5G capabilities.
  1. Rethinking Memory and Storage to be Data Centric. The industry is moving from Compute-Centric Architectures to Data Centric Architectures and that transition is driving new server connected memory and storage models for IT. Technologies around persistent, encrypted and tiered memory inside the server along with remotely accessed SCM and NVMe oF data through new industry fabric standards are creating innovative IT architectures for optimal data security, scaling and preservation.
  1. Adopting new Server technology while Being Remote. The world has changed, and businesses have been forced to not just map a digital transformation but realize it to operate. Companies dealing with faster digital transitions of tools, processes and infrastructure need to operate with a remote work force. This transition is forcing companies to evaluate new server technologies and assess resource requirements which will emphasize the necessity to utilize server capabilities around debug, telemetry and analytics in a remote fashion to keep business continuity going forward.
  1. It’s not a CPU Competition, it’s a Recipe Bake-off. The processor landscape is changing, and it is becoming an environment of acquisitions, specializations and vendor differentiated integrations. We see Intel, AMD and Nvidia all making acquisitions to provide each with CPUs, DPUs and Accelerators in their portfolio. The real winner will be able to leverage their portfolio of silicon products and software libraries to form recipes of integrated offerings for targeted workloads to help end customers optimize business outcomes.
  1. Measure your IT Trust Index. Security around server access and data protection has never been more challenging, so customers need to be able to quantify their security confidence in order to gauge infrastructure trustworthiness and identify digital risks. Customers need to analyze product origins and features, new security technologies and segment specific digital threats in the backdrop of increasing regulatory landscape to formulate their measurement of IT trust from the Edge to Core to Cloud.

As we focus on the new year, new technologies and new initiatives, we welcome the opportunity to go deeper with each of these trends with our customers and their specific views and challenges. Reach out to your account team for an engagement and follow us on Twitter to stay up to date.


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    Citrix Cloud Virtual Apps and Desktop Service: Error in Studio while accessing various nodes “No Citrix Cloud Connector was found…….to be correctly recognized”

    Although installed 4 Cloud Connector and joined within different resource location, Cloud Studio is not able to recognize them hence cannot proceed to add resources.

    Under IAM not seeing all domains

    Below the error on adding a hosting connection:

    ” No Citrix Cloud Connector was found, either on the site or for the required zone. At least one Cloud Connector is needed for the site. Any configured zones containing hypervisors require at least one Connector per zone. New or recently moved Connectors may need a few minutes to be correctly recognized”

    User-added image


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