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KACE Systems Management Appliance (SMA) vs Microsoft Windows Server Update Services comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 1, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
7.3
KACE Appliance boosts productivity and reduces costs by streamlining system management, cutting labor needs, and simplifying processes.
Sentiment score
3.2
Windows Server Update Services provides free, efficient patch management, automates updates, centralizes downloads, and reduces crashes and internet usage.
The return on investment is seen in the quick access to information, good inventory management, and efficient systems management.
Avocat at Star Boxes India Pvt Ltd
If they have some bundle options to pay less for more, we will get it and use it.
Senior Oracle DBA at a financial services firm with 11-50 employees
 

Customer Service

Sentiment score
6.6
KACE Systems Management Appliance users praise the responsive, professional support and ITNinja for high satisfaction despite mixed experiences.
Sentiment score
4.1
Users criticize Microsoft Windows Server Update Services support for slow responses and inconsistency, preferring online resources or premium support.
I would rate the customer support for Quest KACE Systems Management Appliance (SMA) as a 10.
Server Administrator III at a university with 1,001-5,000 employees
The customer service is very good, providing quick customer support in Spanish.
Avocat at Star Boxes India Pvt Ltd
I explain that I am unhappy because it takes too long for a reaction.
System Administrator at Waternet
When you pay for the support, you are guaranteed resolution, and I don't think anybody else does that.
IT Manager at Handi Quilter, Inc.
Premium support does not have any benefits.
Lead - Technical Services at Impetus
 

Scalability Issues

Sentiment score
7.1
KACE SMA efficiently manages endpoints, easily scales, integrates well with virtual environments, and accommodates growth with minimal setbacks.
Sentiment score
5.2
Windows Server Update Services is scalable and adaptable but may experience performance issues in large, stressed deployments.
The product is very scalable as it supports 10,000 thousand endpoints with just one appliance.
Avocat at Star Boxes India Pvt Ltd
We have outgrown the size of one KACE appliance and are now running two.
Server Administrator III at a university with 1,001-5,000 employees
To go beyond this, shifting to SCCM is advisable.
Lead - Technical Services at Impetus
 

Stability Issues

Sentiment score
8.1
KACE SMA is stable and reliable, with quick support for issues and minimal downtime, appreciated for its resilience.
Sentiment score
5.3
Microsoft Windows Server Update Services is stable and reliable, though minor issues may occur with specific updates or large environments.
KACE Systems Management Appliance (SMA) is stable and secure;
Security Administrator at EbixCash
When we schedule our updates, it works, and that's it—nothing irregular or different than what was expected.
Senior Oracle DBA at a financial services firm with 11-50 employees
 

Room For Improvement

KACE SMA users seek enhanced scalability, reporting, UI design, easier remote management, and better integration with reduced resource consumption.
Windows Server Update Services requires UI enhancements, better integration, stability improvements, and efficient patch management for smoother operation.
The dashboard could be more interactive; for example, it should provide alerts if an endpoint is vulnerable to viruses.
Security Administrator at EbixCash
Currently, we have to go into each org to deploy applications when we need them all across the university.
Server Administrator III at a university with 1,001-5,000 employees
The user interface needs improvement as customers have mentioned they do not like the interface since it is not an SMA-based interface.
Avocat at Star Boxes India Pvt Ltd
I would like the updates to be less often and more rarely because they have a high impact on our team.
Senior Oracle DBA at a financial services firm with 11-50 employees
The speed of it is quite painfully slow, so there's not a lot you can do to get Microsoft Windows Server Update Services to work under stress.
IT Manager at Handi Quilter, Inc.
 

Setup Cost

KACE SMA's per-device licensing offers cost-effective scalability and comprehensive management, providing value across various organization sizes.
Microsoft Windows Server Update Services has no licensing fees but can incur costs from storage, cloud deployment, and enterprise agreements.
My experience with pricing, setup cost, and licensing for Quest KACE Systems Management Appliance (SMA) is that, hands down, it beat all of the others in simplicity and pricing.
Server Administrator III at a university with 1,001-5,000 employees
The pricing is in the middle range of the market, not too expensive but not the cheapest either.
Avocat at Star Boxes India Pvt Ltd
In terms of cost-effectiveness, considering a situation where I want to deploy KACE Systems Management Appliance (SMA) for just pushing updates, it is completely fine.
Security Administrator at EbixCash
It's a free service.
Lead - Technical Services at Impetus
It's free.
Network Architect at a construction company with 51-200 employees
 

Valuable Features

KACE SMA enhances productivity with off-hours deployment, automation, and streamlined asset and license management through a single interface.
Microsoft Windows Server Update Services offers centralized management, automated updates, and reporting, enhancing efficiency without extra licensing fees.
Scripting has saved us hundreds of hours over the years when patching these vulnerabilities compared to how we did it before.
Server Administrator III at a university with 1,001-5,000 employees
Incident resolution capabilities with KACE Systems Management Appliance (SMA) have improved operational efficiency for system administrators, as it makes it easier to track machines with KACE Systems Management Appliance (SMA), gather their IP addresses, and push several updates, patches, or software deployments at once.
Security Administrator at EbixCash
The most valuable features include simplicity, which makes systems management easier and faster, especially for device management.
Avocat at Star Boxes India Pvt Ltd
The ease of use and efficient reporting contribute significantly to my overall productivity.
Lead - Technical Services at Impetus
The most valuable feature of Microsoft Windows Server Update Services is the update for Microsoft Windows Server.
Senior Oracle DBA at a financial services firm with 11-50 employees
I confirm that they all get downloaded and installed simultaneously, and the new security patches are applied automatically.
System Administrator at Waternet
 

Categories and Ranking

KACE Systems Management App...
Ranking in Patch Management
9th
Average Rating
8.8
Reviews Sentiment
6.8
Number of Reviews
40
Ranking in other categories
Client Desktop Management (2nd), Endpoint Compliance (7th), Remote Monitoring and Management (RMM) (12th), Unified Endpoint Management (UEM) (10th)
Microsoft Windows Server Up...
Ranking in Patch Management
4th
Average Rating
7.8
Reviews Sentiment
5.9
Number of Reviews
53
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Patch Management category, the mindshare of KACE Systems Management Appliance (SMA) is 3.5%, down from 5.1% compared to the previous year. The mindshare of Microsoft Windows Server Update Services is 4.0%, down from 6.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Patch Management Mindshare Distribution
ProductMindshare (%)
Microsoft Windows Server Update Services4.0%
KACE Systems Management Appliance (SMA)3.5%
Other92.5%
Patch Management
 

Featured Reviews

AdityaJain - PeerSpot reviewer
Security Administrator at EbixCash
Centralized software deployment has simplified endpoint control but needs stronger security alerts
What I like best about KACE Systems Management Appliance (SMA) is that it allows pushing custom-made applications to all computers that have KACE Systems Management Appliance (SMA) endpoint installed. This makes it easier for the organization to push patches and updates. If I need to push EDR updates, I can use KACE Systems Management Appliance (SMA), as it automatically updates the EDR on that endpoint, and that is a great feature. Overall, KACE Systems Management Appliance (SMA) helps streamline my processes by allowing me to check the uptime and downtime of machines, whether they are connected to the internet or not, and how long a machine has been switched off. I can also gather hardware details and software inventory from it. I can show a live demonstration if a video conference can be arranged. Incident resolution capabilities with KACE Systems Management Appliance (SMA) have improved operational efficiency for system administrators, as it makes it easier to track machines with KACE Systems Management Appliance (SMA), gather their IP addresses, and push several updates, patches, or software deployments at once. I can design compliances as per my requirements, such as ensuring passwords are reset after 45 days.
NN
IT Manager at Handi Quilter, Inc.
Experience with update service shows need for reliability, but support excels
I wouldn't say any of the update services have great features. The only real advantage I have for having Microsoft Windows Server Update Services is if I know or have been informed of a bad update that's causing software conflicts, I can stop it. But I do not depend on Microsoft Windows Server Update Services to keep my machines updated because the failure rates are too high. I have other tools for reporting and inventory capabilities. The inventory tool and the entire backend of Microsoft Windows Server Update Services is poorly coded. It's not very reliable, so you can tell when dealing with bad code, and it may work one day but may not work another. So I had to stop using it because I need something that's reliable, therefore I use other tools for that information. In a pinch, you can use Microsoft Windows Server Update Services tools, but for the most part, they're not reliable enough. I don't believe I've seen any improvement on bandwidth optimization or deployment speed from Microsoft Windows Server Update Services. In fact, the only real improvement comes directly from Microsoft because they stagger the updates. So that helps, but having Microsoft Windows Server Update Services on-premise does not provide any real benefit. Its pricing is just all-inclusive. I don't think about it that way. If somebody tried to sell me Microsoft Windows Server Update Services, I would probably reject it. It's a tool that we have, so we use it, but if I were to pay extra for it, I would say it's not worth it. Some of the main differences between Microsoft Windows Server Update Services and the other tools are that WSUS's backend is based on IIS, which is not a very reliable host method. You're going to have problems getting Microsoft Windows Server Update Services to run when you have a large organization. The speed of it is quite painfully slow, so there's not a lot you can do to get Microsoft Windows Server Update Services to work under stress. The other tools just work. I can tell you what services are running on each of my machines and can stop or restart services. I can inventory the software they have on them with multiple tools, so I know what software is on our machines. I don't have to rely on a tool that works when it wants to and requires so much maintenance to keep it going. Microsoft Windows Server Update Services is only to green check updates that I know are fine, but obviously, it could save me in a pinch if something went wrong.
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Top Industries

By visitors reading reviews
University
11%
Non Profit
9%
Financial Services Firm
8%
Government
8%
Manufacturing Company
8%
Government
7%
University
7%
Financial Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise20
Large Enterprise16
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise6
Large Enterprise24
 

Questions from the Community

What is your experience regarding pricing and costs for Quest KACE Systems Management?
In terms of cost-effectiveness, considering a situation where I want to deploy KACE Systems Management Appliance (SMA) for just pushing updates, it is completely fine. However, apart from that, I d...
What needs improvement with Quest KACE Systems Management?
For improvements in KACE Systems Management Appliance (SMA), I would want to see it become a standalone software agent. I am curious about why it does not offer EDR functionality. Additionally, the...
What is your primary use case for Quest KACE Systems Management?
I have deployed KACE Systems Management Appliance (SMA) around 230 plus PCs, and I use it to push Windows updates and scripts. I have designed various scripts for tasks such as password resets afte...
What is your experience regarding pricing and costs for Microsoft Windows Server Update Services?
I don't know all details about pricing for Microsoft Windows Server Update Services, so I can't answer this question.
What needs improvement with Microsoft Windows Server Update Services?
I think nothing could be improved or enhanced in Microsoft Windows Server Update Services because it is doing precisely what it has to do. I do not see any minor enhancements or limitations to be o...
What is your primary use case for Microsoft Windows Server Update Services?
I use Microsoft Windows Server Update Services primarily for Windows updates, specifically for updates and security patch updates from Microsoft.
 

Also Known As

Dell KACE Systems Management
Windows Server Update Services, Microsoft WSUS, WSUS, Microsoft Software Update Services, Software Update Services, Microsoft SUS, SUS, MS Windows Server Update Services
 

Overview

 

Sample Customers

Waypoint, Mattos Filho, Meetic, Gems Education, Green Clinic HealthSystem, Service King
Information Not Available
Find out what your peers are saying about KACE Systems Management Appliance (SMA) vs. Microsoft Windows Server Update Services and other solutions. Updated: April 2026.
893,311 professionals have used our research since 2012.