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Ihor Vakar

Ihor Vakar

Founder of IT Master, Systems Engineer

Systems engineer and founder of IT Master. In IT since 2005. Supports business server and network infrastructure: Windows Server and RDS terminal servers, VMware ESXi virtualisation, MikroTik networks, 1C/BAF servers.

His main focus is diagnosing complex failures and incident analysis: from event logs and process dumps to an established root cause and an expert conclusion. He builds his own diagnostic and automation tools. Works with clients in Ukraine and abroad, mostly remotely.

On the blog he publishes breakdowns of real incidents from client work and practical guides for administrators.

All articles by the author

RDS Server Hangs After KB5122882: Dump Analysis

Terminal Server Hangs After the September Windows Update: An Incident Breakdown With Dumps

· 20 min read
The Fake Bank Payment: How a Phishing Email Hijacks Your Computer

The Fake Bank Payment: How a Phishing Email Hijacks Your Computer

· 9 min read
Electronic Excise Stamp

Ukraine's eExcise: What Businesses Need to Know and Prepare For

· 9 min read
Migrating virtual machines from VMware ESXi to Proxmox VE

Migrating from ESXi to Proxmox in 2026: Should Ukrainian Businesses Ditch VMware

· 8 min read
Windows Server 2022 moving from mainstream to extended support in 2026

Windows Server 2022: Mainstream Support Ends in 90 Days — What Ukrainian Businesses Should Do

· 6 min read
NadMesh: Bots Scan for Exposed AI Services and Steal AWS Keys

NadMesh: Bots Scan for Exposed AI Services and Steal AWS Keys

· 5 min read
Docker for Beginners: How Containers Simplify Development and Deployment

Docker for Beginners: How Containers Simplify Development and Deployment

· 3 min read
UX Mistakes That Cost Money: Real Website Analysis

UX Mistakes That Cost Money: Real Website Analysis

· 6 min read
Google Algorithm Changes 2026: What Website Owners Need to Know

Google Algorithm Changes 2026: What Website Owners Need to Know

· 5 min read