The Most Common IT Problems

Every IT team I've worked with has a version of the same conversation eventually: something breaks, nobody planned for it, and the fix costs more than it would have to prevent it. That's not a knock on IT staff. It's what happens when infrastructure grows faster than the budget and attention available to manage it.

The numbers back this up. According to the Splunk/Cisco 2026 Hidden Costs of Downtime report, Global 2000 companies now lose a combined $600 billion a year to unplanned outages, a 50% jump in just two years, with the average large company losing $300 million annually. Smaller businesses aren't exempt either: Atlassian's downtime research puts the cost for small businesses between $137 and $427 per minute, which adds up fast during a bad afternoon.

This piece covers the problems that actually show up on service desk tickets and in postmortems, not a textbook list. Most of them are preventable. Almost none of them get fixed until they've already cost someone money.

1. Legacy infrastructure nobody wants to touch

This is the one that never quite goes away. A SnapLogic survey of 750 IT decision-makers found that legacy tech upgrades cost the average business $2.9 million in a single year, and nearly two-thirds of companies spend more than $2 million annually just maintaining old systems, before any modernization happens. Almost a third of respondents said up to 25% of their legacy systems can't even support current AI tooling, which matters more every quarter as vendors push AI features into core products.

"Maintenance and development costs continue after the initial implementation phase," said Jeremiah Stone, CTO of SnapLogic, in the CIO Dive coverage of the survey. "Companies also struggle to dissolve technical debt when legacy systems are intertwined with existing workloads, making them imperative to everyday operations."

That's the trap in a sentence. The system is too risky to touch and too embedded to replace easily, so it stays. Meanwhile it's quietly costing you in lost efficiency, in the specialists you have to keep on retainer because nobody else knows how the thing works, and in the security patches that stopped shipping years ago.

The practical fix isn't a heroic rip-and-replace. It's an inventory: know what's running, know its support status, and rank replacement priority by exposure, not by how annoying the software is to use. A legacy system holding customer data on an unsupported database engine outranks an ugly internal reporting tool every time, even if the reporting tool gets more complaints.

Outdated hardware specifically

Hardware failure is one of the leading causes of unplanned downtime, and it compounds with software risk: an aging server running an unpatched OS is two problems stacked on top of each other. The fix here is boring and effective: track warranty and end-of-support dates the same way you track software licenses, and budget for replacement on a schedule instead of waiting for a failure to force the issue.

2. Weak or missing security guidelines for staff

If your staff don't have a written, enforced policy on device use, password hygiene, and data handling, you're relying on individual judgment to hold the line against organized criminal operations. That's not a fair fight. The 2026 Verizon Data Breach Investigations Report, drawing on more than 22,000 confirmed breaches, found that credential abuse still appears somewhere in the attack chain of 39% of all breaches, even though vulnerability exploitation edged it out as the top initial access vector this year.

Third-party access is a growing piece of this problem too. Verizon's data shows third-party involvement in breaches jumped 60% year over year, reaching 48% of all breaches. A lot of that traces back to basic gaps: only 23% of third-party organizations fully remediated missing or misconfigured multi-factor authentication on their cloud accounts, and 37% had at least one admin account with MFA disabled entirely on an IaaS platform.

In practice this means three things need to happen, in order. First, write the policy down and make it specific (what's allowed on personal devices, what triggers a report, who owns exceptions). Second, train people on actual current threats, not a generic slideshow about not clicking suspicious links. Third, back the policy with technical controls, firewalls, endpoint protection, and enforced MFA, so the policy isn't the only thing standing between an employee's mistake and a breach.

3. Ransomware and credential-driven attacks

Ransomware now appears in 48% of all breaches tracked in the 2026 Verizon DBIR, the highest share in the report's history. There's a nuance worth knowing here, though: 69% of ransomware victims did not pay, up from 65% the year before, and the median ransom payment actually dropped to $139,875. Attackers are still winning access constantly. They're having a harder time monetizing it, largely because more organizations have usable backups and refuse to negotiate.

The infostealer-to-ransomware pipeline is the part most businesses underestimate. Verizon's analysis found that 73% of ransomware victims had a prior infostealer infection or credential leak before the attack hit, with a median window of roughly 95 days between the initial credential exposure and the ransomware event. That window is your opportunity. If you're monitoring for leaked credentials tied to your domain, you get advance warning most organizations never use.

The financial stakes remain serious even with declining ransom payments. IBM's 2025 Cost of a Data Breach Report put the global average cost of a breach at $4.44 million, down 9% from the year before, the first decline in five years. That's still a number that can sink a small or midsize business outright.

The oldest data point in this category still explains the stakes clearly. Drug manufacturer Merck lost more than $1.3 billion in the 2017 NotPetya attack, then spent years in litigation with its own insurers over whether the "act of war" exclusion applied. Merck and its insurers settled the $1.4 billion coverage dispute in January 2024, a resolution that took more than six years to reach. If you're relying on cyber insurance as your backstop, read the exclusions now, not after an incident.

4. New technology that doesn't integrate cleanly

Every rollout of new tooling carries integration risk, and it's gotten more complicated as environments have gotten more distributed. Deployment friction is now cited as a top challenge by IT teams working through cloud migrations, platform consolidations, and AI tool adoption simultaneously. This is where teams usually trip up: they buy the tool before they've defined what problem it solves for which team, and the rollout stalls in a swamp of half-configured integrations.

A workable sequence looks like this: define the specific business outcome the new technology needs to deliver, pilot it with a small group that will give honest feedback, build the troubleshooting runbook before general rollout (not after the first fire), and set a realistic timeline that assumes at least one delay. None of this is exotic advice. It's just consistently skipped under deadline pressure.

5. No documented IT plan

A lot of IT problems trace back to the absence of a plan rather than any single technical failure. Teams without documented milestones and KPIs tend to discover problems reactively, after a system has already failed or been exploited, rather than catching them during a scheduled review.

The costs of operating without a plan are concrete: more unplanned downtime, more emergency purchases at premium prices instead of planned procurement, and a wider attack surface because nobody owns the job of closing gaps before they're exploited. Small and midsize businesses are disproportionately affected here because they often lack a dedicated planning function, not because the problems are different in kind from what enterprises face.

A minimal plan doesn't need to be sophisticated. It needs an inventory of what you run, a documented patching cadence, a tested backup and disaster recovery process, and a named owner for each of those functions. That's a starting point, not a finished program, but it's the difference between managing risk and discovering it after the fact.

What actually moves the needle

None of these five problems are solved by a single tool purchase. They're solved by ongoing attention: someone whose job includes noticing that a server is three years past its support window, or that a vendor's access was never revoked after a project ended.

For businesses without the headcount to dedicate a full-time person to this, working with an experienced managed IT services provider is usually the more economical path, not because internal staff aren't capable, but because a provider handling dozens of environments spots patterns and vendor-specific failure modes faster than a team seeing the problem for the first time. The math on downtime and breach costs above makes the case better than any sales pitch could.