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

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 23, 2025

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 SMA increases efficiency and productivity, offering rapid ROI by streamlining operations and reducing time, costs, and staffing needs.
Sentiment score
3.8
Microsoft Windows Server Update Services offers cost-effective automation and patch management, centralizing updates to reduce crashes and download traffic.
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 SMA support is praised for its expertise and 24/7 availability, with occasional room for flexibility improvement.
Sentiment score
4.5
Microsoft Windows Server Update Services support is mixed, with praise for premium help but concerns over wait times and organization.
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
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
There was a time when contacting the support agency was more straightforward.
Network Architect at a construction company with 51-200 employees
 

Scalability Issues

Sentiment score
7.2
KACE Systems Management Appliance efficiently supports various organization sizes, excelling in integration, scalability, and comprehensive network management.
Sentiment score
5.7
Microsoft Windows Server Update Services is praised for scalability and flexibility, though some note performance issues in large-scale environments.
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
The product is very scalable as it supports 10,000 thousand endpoints with just one appliance.
Avocat at Star Boxes India Pvt Ltd
To go beyond this, shifting to SCCM is advisable.
Lead - Technical Services at Impetus
 

Stability Issues

Sentiment score
8.1
KACE Systems Management Appliance is praised for its stability, reliability, and efficient performance, with swift recovery during incidents.
Sentiment score
4.9
Microsoft Windows Server Update Services is highly reliable with minimal bugs, supporting various setups effectively and requiring low maintenance.
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 Systems Management Appliance struggles with scalability, usability, customization, integration, image deployment, and technical support responsiveness.
Microsoft Windows Server Update Services needs UI improvements, enhanced integration, better client support, and efficient updates to reduce disruptions.
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 Systems Management Appliance offers cost-effective enterprise solutions, although potentially expensive for small businesses, with no additional feature costs.
Windows Server Update Services is included with Windows Server, offering varied pricing, with differing costs based on licensing models.
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
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
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 offers integrated, centralized IT management for efficient software deployment, asset management, and security with customizable inventories.
Microsoft Windows Server Update Services offers efficient, centralized update management with scalability, AD integration, cost-effectiveness, and selective patch downloads.
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
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
Patch management is indeed valuable, however, the process to achieve it could be improved.
Network Architect at a construction company with 51-200 employees
 

Categories and Ranking

KACE Systems Management App...
Ranking in Patch Management
10th
Average Rating
8.8
Reviews Sentiment
6.8
Number of Reviews
39
Ranking in other categories
Client Desktop Management (3rd), Endpoint Compliance (7th), Remote Monitoring and Management (RMM) (10th), Unified Endpoint Management (UEM) (10th)
Microsoft Windows Server Up...
Ranking in Patch Management
3rd
Average Rating
7.8
Reviews Sentiment
6.0
Number of Reviews
52
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of December 2025, in the Patch Management category, the mindshare of KACE Systems Management Appliance (SMA) is 3.8%, down from 5.9% compared to the previous year. The mindshare of Microsoft Windows Server Update Services is 4.7%, down from 7.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Patch Management Market Share Distribution
ProductMarket Share (%)
Microsoft Windows Server Update Services4.7%
KACE Systems Management Appliance (SMA)3.8%
Other91.5%
Patch Management
 

Featured Reviews

MH
Server Administrator III at a university with 1,001-5,000 employees
Reliability and adaptability enable efficient application deployment and security management
The best features Quest KACE Systems Management Appliance (SMA) offers include the scripting function, which stands out to me because I can find specific needs and deploy the applications based on those needs. There was a time when scripting really saved me time by allowing me to find specific registry entries and modify them to patch security vulnerabilities. Scripting has saved us hundreds of hours over the years when patching these vulnerabilities compared to how we did it before. I really enjoy the security features that are enabled to deploy Microsoft and other vendor patches, which stand out to me as key functionalities.
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
12%
Government
10%
Non Profit
9%
Financial Services Firm
8%
Computer Software Company
9%
Financial Services Firm
9%
Manufacturing Company
9%
Government
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise20
Large Enterprise15
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise6
Large Enterprise23
 

Questions from the Community

What is your experience regarding pricing and costs for Quest KACE Systems Management?
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.
What needs improvement with Quest KACE Systems Management?
I wish Quest KACE Systems Management Appliance (SMA) would have a top-down approach since we use orgs; currently, we have to go into each org to deploy applications when we need them all across the...
What is your primary use case for Quest KACE Systems Management?
My main use case for Quest KACE Systems Management Appliance (SMA) is to deploy applications and maintain security, and we use it day-to-day to handle those tasks. With Quest KACE Systems Managemen...
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 that an area of Microsoft Windows Server Update Services that could be improved is to make these updates less often and more rarely than now, because we have to do these updates once a mont...
 

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: December 2025.
879,259 professionals have used our research since 2012.