Tier-3 Windows Support Needed

@RafimKs

Hi there, I’d like to work with you on this one if possible! I have 16+ years of solid experience in Network and System Administration,Desktop and Technical Support. I can help you to fix this real quick .Thank you for considering my application. I look forward to hearing from you. Thanks, Muhammed Rafi

@tangramua

Dear ,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time.   We are 25 years in this business and our technical specialists have strong experience in System Admin, Troubleshooting, Technical Support, Active Directory, DNS, Windows Server, Network Administration, VPN, Firewall, System Administration and other technologies relevant to your project.   Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews.   Please contact us via Freelancer Chat to discuss your project in details.    Best regards, Sales department Tangram Canada Inc.     

@farooqtahir2013

As a vastly experienced Network, Cybersecurity, VoIP, and System Engineer with a decade-long stint in the field of information technology and services, I feel equipped to handle your Tier-3 Windows support project. Over the years, I have amassed comprehensive knowledge of Windows environments similar to yours, dealing with issues ranging from boot-loop anomalies to security concerns and Group Policy Processing errors. My familiarity with tools including Active Directory DS, DNS, GPMC, Event Viewer, PowerShell, and Sysinternals will enable me to troubleshoot with precision. Lastly, I bring a results-oriented approach to each project -fixing crippling domain issues isn't just about resolving the immediate crisis but also about providing lasting solutions. With me on board, not only can you expect dependable problem-solving but also comprehensive root cause reports of all issues encountered during the process. I look forward to leveraging my expertise in DNS, Network Administration, System Administration along with my Technical Support skills to restore stability in your setup and equally important document processes for your internal benefit.

@Lee2133

Hi, There Senior MS Engineer here. I would like to complete this project for you. I can provide you with certifications as well. Please let me know when you're available to discuss further.

@AwaisChaudhry

Hello, I understand your mixed Windows 10/11 and Windows Server environment has critical domain issues—authentication failures, DC reachability problems, and GPO processing errors. My plan is to first restore domain stability by validating AD DS health, DNS, replication, and time synchronization across DCs, then reapply and verify GPOs using GPMC and Event Viewer. I’ll use PowerShell and Sysinternals to collect evidence, fix misconfigurations, and test changes in a controlled manner. Once the domain is healthy, I’ll diagnose and resolve the boot loop on the affected PC, fine-tune Windows Defender Firewall rules, and address the other advanced Windows quirks you mentioned. Deliverables include a concise root-cause report with steps taken and a clear rollback plan. I’ll perform work remotely via VPN+RDP with live testing and quick reboots as requested. Can you share the exact AD site topology (sites and services), the number of Domain Controllers per site, and any known replication errors or recent changes that precede these outages? Best regards,

@ramygoda1590

Hi there, I am networking expert specialist and consultant for more than 11 years, who spend my free time to learn about new technologies in networking, security field to be always up to date. please just ping me on chat to have a short discussion on your project i will always look for solving your tasks ickly. below is a brief on my experience: Technology Specialist: --------------------- - Can design, implment large scale networking and make exaplanation reports. - Practice on Cisco Packet Tracer, GNS-3, EVE-NG. - Excellent pracitce on VMware WorkStation, Virtual-Box - VPN (IPSEC,IKE v1 or v2 ,L2TP ,OPENVPN, DUO Authentication). - Routing Protocols (BGP, OSPF, EIGRP .. ). - Wrie Technical Reports with excellent and format. Skills and Hands on Experience: ------------------------------- - Cisco devices (routers, switches), routing protocols, IPSEC, Cisco ASA Firewall. - Fortinet Devices: FortiGate, Forti Manager, Forti Analyzer. - wireless (WLC, Access Points): CISCO, Aruba, ubiquiti. - Juniper (M7, M10, MX 480, MX 960) and SRX (300, 500). - Operating Systems: Linux servers (Ubuntu, RedHAT, Debian), windows (Windows server 2012, 2016 ..etc). Regards, Ramy

@irsolutions

With over 10 years of experience in IT support and Windows environment management, I understand the critical domain issues disrupting your daily work. Restoring domain stability and resolving authentication issues are top priorities for your project. I have a proven track record of successfully restoring user authentication, establishing reliable connectivity to domain controllers, and eliminating Group Policy errors in similar scenarios. In the past, I have successfully tackled stubborn boot-loop issues, fine-tuned Windows Defender Firewall rules, and resolved advanced Windows quirks, delivering effective solutions for my clients. My expertise in Active Directory DS, DNS, GPMC, Event Viewer, PowerShell, and Sysinternals will ensure a thorough and efficient resolution to your challenges. I am ready to tackle your project head-on and provide you with a quick outline of my approach for restoring domain stability. Let's work together to address your IT challenges and ensure smooth operations moving forward.

@zulqrn

Hi there, I'm an IT Professional with over 7 years of hands-on experience in Server, Network, Firewall, AWS, Virtualization, Google Workspace, Scripting, Migrations, Office365 & IT Support. I would love to assist you in this. Please drop me a text in chat box to discuss further. I hope to talk to you soon. Thank you!

@krishmaqvan

As a seasoned IT professional with over X years of experience in network administration, system administration, and technical support, I have the perfect skill set to address the domain issues you're currently experiencing. Having worked extensively with Windows Servers and various Windows operating systems like the ones you have described, I understand the frustration these disruptions can cause in your business's daily functionality. Drawing on my experience leading successful projects like yours before, I would start by conducting a comprehensive audit of your domain infrastructure to identify and address any specific vulnerabilities that may be impacting authentication and connection stability. Simultaneously we would be working closely together through secure remote access channels ( VPN + RDP) ensuring quick communication making necessary tweaks throughout the process. Resolving your domain disruption issue is just one aspect of my service. Additionally, I will efficiently address other concerns you've mentioned like fine-tuning Windows Defender Firewall rules and rectifying any advanced system quirks that may have crept in. My deliverables extend beyond technical resolutions-- at project's end you can expect a brief root-cause report and detailed steps taken so you can confidently document any necessary fixes internally. With me on board, consider your project in capable hands; let's establish robust digital foundations for your company together!

@najibe1

Hello, I’m an IT expert with over 20 years of experience in the industry. I hold certifications as a Cisco Certified Networking Professional (300-100 and 300-115), Linux Certified Professional (LPI 101, 102, 103), Red Hat Certified System Administrator, VMware Certified Professional (versions 4, 5, and 5.5), as well as being a Microsoft System Administrator/Engineer from 2003 to 2022 and AZ104

@ahmadpiran

Hi there, I can step in as your go-to technician for this. It sounds like you have some replication or DNS desync issues causing the authentication and GPO failures. How I’ll tackle the domain (Priority #1): 1. DNS & Time Sync Audit: Verify all DCs agree on time and DNS records (crucial for Kerberos auth). 2. Replication Check: Use repadmin /showrepl and dcdiag to find where the communication is breaking between controllers. 3. Event Logs: Review the Directory Service logs to pinpoint the exact errors blocking the GPOs. Estimated Timeframe: I can usually diagnose and stabilize the domain issues within 2–4 hours. For the workstation boot-loop and firewall tuning, I’d estimate another 3–5 hours depending on the complexity. I'm doing these type of work for about 12 years. I’m ready to jump on VPN and start the logs now. Best, Ahmad

@Kierenbennett

I have over 10 years’ experience supporting mixed Windows 10, Windows 11, and Windows Server environments, with a strong focus on Active Directory stability, authentication, and Group Policy troubleshooting. My first priority would be restoring domain health. I would validate AD DS and DNS integrity, check domain controller replication, secure channel trust, time synchronisation, and authentication logs to identify why users and machines are losing domain connectivity and why GPOs are failing. Once authentication and Group Policy processing are stable and verified across all systems, I would move on to the secondary issues. Estimated timeframe: • Initial domain assessment and stabilisation: usually same day depending on findings • Full authentication and GPO remediation: 1–2 working days • Boot-loop resolution and firewall optimisation: 1–2 additional days depending on findings I’m comfortable working over VPN and RDP(alternatively i have Ninja to keep an eye on errors and collate information also allwing remote connection ) coordinating live testing and reboots, and acting as a long-term technician for future issues.

@ahmedsud

I can help you stabilize and fully restore your Active Directory environment. I have deep hands-on experience with AD DS, DNS, replication, GPO troubleshooting, authentication failures, and domain health recovery across mixed Windows 10/11/Server infrastructures. My approach will be to first diagnose and fix domain controller health (replication, DNS, secure channel, SYSVOL, time sync), restore authentication and GPO processing, then resolve the boot-loop issue and optimize firewall rules without breaking services. You’ll receive a clear root-cause report and documented steps for future reference.

@trm66614

Hi there, Good afternoon I am Talha. I have read you project details i saw you need help with Troubleshooting, Network Administration, Firewall, Windows Server, System Administration, Technical Support, Active Directory, VPN, DNS and System Admin I am excited to submit my proposal for your project, which focuses on a comprehensive project plan. To begin, we will thoroughly understand your project's objectives and requirements, ensuring alignment on scope and goals. We will provide a clear and realistic project timeline with manageable milestones to ensure timely completion Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan

@novatech2210

Hi Jeff, Just helped a client stabilize their hybrid Active Directory environment and resolve similar authentication issues – domain connectivity, Group Policy discrepancies, and reliable access to DCs. We’re the perfect fit for this project. At Novatech, I specialize in delivering robust Windows support using structured PowerShell scripts, advanced Group Policy Management, and in-depth DNS/DHCP troubleshooting. My expertise also lies in resolving complex Active Directory issues, optimizing Windows Defender Firewall rules, and analyzing Event Viewer logs. Multiple 5-star reviews on Windows Server and Active Directory projects. Happy to jump on a quick call to discuss your setup and provide a tailored approach. Worst case, you get a free consultation and some solid ideas. Chris | Lead Developer | Novatech

@leciffre69

Timeline: 3 days | Rate: $50/hr | Availability: 12h/day, ready to start today ❤️ Hello, I’ve solved this exact problem before and can restore full domain stability and resolve your Windows issues within 3 days. Your main issue is authentication failures, domain connectivity problems, and Group Policy errors disrupting daily operations. The key point is systematic troubleshooting and prioritization. In similar projects, I restored Active Directory health, fixed DNS and GPO application errors, resolved individual workstation boot-loops, and optimized firewall rules while documenting all changes for future reference. To move forward, could you provide VPN/RDP access, details of the affected PC, and current GPO/AD topology? Looking forward to discussing more in detail on chat!

@naveenrai507

Hello, I’m an experienced Windows Systems technician with strong expertise in Windows 10/11 and Windows Server domain environments. I can quickly restore Active Directory stability, resolve authentication failures, fix domain controller connectivity issues, and eliminate Group Policy errors. My approach is to first stabilize the domain (AD DS, DNS, replication, GPOs), then address secondary tasks like the boot-loop issue, Windows Defender Firewall tuning, and other advanced Windows problems. I’m comfortable working remotely via VPN/RDP and regularly use PowerShell, Event Viewer, GPMC, and Sysinternals. Deliverables include: Restored user authentication Reliable domain controller connectivity Fully functioning Group Policies Boot-loop issue resolved Optimized firewall rules Brief root-cause report and documentation I can start immediately. Estimated completion: one working day, depending on findings. Best regards, Naveen

@maximg10

⭐Hi, I’m ready to assist you right away!⭐ I believe I'd be a great fit for your project since I have extensive experience in managing mixed Windows environments, troubleshooting critical domain issues, and optimizing firewall settings to ensure network security. With my technical expertise in Windows Server, Firewall configuration, DNS management, and Active Directory, I am well-equipped to address the specific challenges your setup is facing. This project will effectively restore domain stability, resolve authentication issues, and streamline Group Policy application, ultimately boosting your daily operations. Furthermore, I will tackle the workstation boot-loop, fine-tune Windows Defender Firewall rules, and address other advanced Windows issues to ensure a seamless network environment. If you have any questions, would like to discuss the project in more detail, or would like to know how I can help, we can schedule a meeting. Thank you. Maxim

@adily1

Hi Ibtisam Z., I understand the urgency in restoring domain stability to prevent daily disruptions. As a System Administrator with over 6 years of experience, I specialize in troubleshooting issues related to Active Directory, DNS, and Group Policy management. My focus will be on successfully restoring user authentication, ensuring reliable connectivity to domain controllers, and eliminating any GPO processing errors. Furthermore, I have extensive experience in resolving boot-loop issues and optimizing firewall settings without affecting current services. I am well-versed in using tools such as PowerShell and Event Viewer, ensuring a thorough examination of all advanced Windows quirks. You can review my previous work here: https://www.freelancer.com/u/adily1 I will start with a complete assessment of your current Active Directory environment, followed by a structured approach to tackle each issue systematically. I anticipate completing the tasks within a few days once we begin. Looking forward to your response. Thanks, Adil Yousuf