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    • Virtual Desktop A full Windows desktop from anywhere
    • Accounting Hosting CCH, Thomson Reuters, Lacerte, Drake
    • Cloud Migration Move your firm without downtime
    • Managed Microsoft 365 Email, Teams and SharePoint, managed
    Cloud Hosting overview →

    Case study

    From constant downtime to a cloud that stays up

    How a CPA firm battling poor support and frequent outages moved to Cetrom.

    Read the case study →
    Managed IT →

    Proactive, fully managed IT for accounting firms — monitored, patched and supported around the clock.

    • 24/7 Senior-level Help Desk Senior engineers, any hour
    • On-site IT Services Hands-on support at your office
    • CetromFS File Sharing & Cloud Printing Secure file sharing and printing
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    White-glove IT for a growth-focused firm

    Responsive support and scalable stability for a CPA firm on the move.

    Read the case study →
    Managed Security →

    Layered security and compliance controls built around the threats accounting firms actually face.

    • Zero-Trust Security Threat detection, EDR/MDR and DNS filtering
    • Cybersecurity Awareness Training Turn staff into the first line of defense
    • Compliance & Audit Support FTC Safeguards, GLBA, IRS and SOC 2
    Managed Security overview →

    Playbook

    Cetrom's Defense in Depth Playbook

    A layered security plan built for accounting firms.

    Get the playbook →
    IT Advisory →

    Strategic IT leadership for partners — roadmaps, budgets and decisions, without a full-time CIO.

    • Strategic IT & vCIO Services Technology strategy and IT roadmaps
    IT Advisory overview →

    White paper

    The AI readiness gap

    Why CPA firms are more exposed than they think — and what to do first.

    Read the white paper →

    Serving accounting firms since 2001. 99.9% uptime guarantee and SOC 2 compliant data centers.

    Not sure which service fits your firm? Talk it through with a senior engineer.

    Request an IT consultation → or call (866) 556-4357
  • Learn

    • Blog Practical IT guidance for firms
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    Client review

    “Cetrom Support fixed all of my problems.”

    Mid-sized East Coast CPA firm

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  • Company

    • Our Story Serving accounting firms since 2001
    • Leadership The people accountable for your uptime
    • Careers Open roles, all levels

    Why Cetrom

    • Built for Accounting We only serve CPA and accounting firms
    • Security & Compliance SOC 2 compliant data centers
    • Awards & Recognition Industry and workplace honors

    Talk to Us

    • Contact Us Start a conversation
    • Technical Support Existing clients — reach an engineer
    • Partners Software and channel relationships

    Why firms switch

    One industry, twenty-five years

    We do not split attention across verticals — accounting is the whole practice.

    Read our story →
Contact Us Technical Support (866) 556-4357
(866) 556-4357 Contact Us

Qualified Multitenant Hoster (QMTH) Program

Why CPA Firms Need Secure IT Support for AI Tools

Artificial intelligence is creating new efficiencies across the accounting industry. But for many firms, the bigger question isn’t whether AI should be used—it’s how to do so safely and effectively..


September 05, 2025

READ MORE ↘

❝ After interviewing and reviewing the proposals from various IT providers, it was really a night and day comparison about price, service, and performance—Cetrom was just outshining the others on every..

- MID-SIZED ❞


VIEW ALL ↘

Qualified Multitenant Hoster (QMTH) Program


 

Cetrom is a Qualified Multitenant Hoster (QMTH) authorized by Microsoft to host your Windows virtual machines via Microsoft Cloud Agreement subscription or Enterprise Agreement/MPSA on dedicated or multitenant hardware. In addition, we are also authorized to host Office 365 ProPlus (including E3 and E5), Project Online Professional, and Visio Pro for Office 365 subscriptions using shared computer activation (SCA) technology.

Click here to learn more about the QMTH Program from Microsoft.

Benefits of Windows 10 Virtualization and Shared Computer Activation for Office 365 ProPlus, Project Online Professional, and Visio Pro for Office 365

Windows 10 virtualization and SCA for Office 365 ProPlus, Project Online Professional, and Visio Pro for Office 365 gives you choice and flexibility. Both allow you to take advantage of existing Windows 10 and Office 365 licensing investments when deploying to the cloud.

You are able to make a deployment choice between on-premises or Cetrom’s shared datacenter. Cetrom is an Authorized QMTH Partner, allowing you to deploy Office 365 ProPlus, Project Online Professional, Visio Pro for Office 365, and qualified Windows 10 products to your chosen cloud infrastructure solution.

Which Windows licenses purchased through Microsoft Volume Licensing (VL) programs include virtualization rights for Qualified Multitenant Hosting?

As of August 1, 2017, the following Windows licenses purchased through Microsoft Volume Licensing currently include virtualization rights for Qualified Multitenant Hosting:

  • Windows 10 Enterprise E3 and E5 per User with SA
  • Windows 10 Enterprise E3 and E5 VDA per User

Which Windows subscriptions purchased under the Microsoft Cloud Agreement Cetrom will include virtualization rights?

As of September 6, 2017, the following Windows subscriptions include virtualization rights for dedicated as well as multitenant hardware in data centers managed by Authorized QMTH Partners such as Cetrom:

  • Windows 10 Enterprise E3 and E5 (with VDI)
  • Windows 10 Enterprise E3 VDA
  • Microsoft 365 Enterprise (formerly Secure Productive Enterprise or SPE) E3 and E5

Which Office 365 products support SCA?

SCA mode works with Office 365 ProPlus, Project Online Professional, and Visio Pro for Office 365. All Office 365 plans that include Office 365 ProPlus, Project Online Professional, or Visio Pro for Office 365 are able to use SCA.

Contact Us Contact Cetrom via email support@cetrom.net or (866) 556-4357 to learn more about Windows 10 Virtualization and SCA.

 

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Cetrom is an accounting-focused managed IT and cybersecurity provider helping CPA firms modernize securely, strengthen compliance, and operate with confidence. Through white-glove support, strategic advisory services, Zero Trust security, and practical AI governance, Cetrom protects firm data, improves performance, and turns technology into a foundation for sustainable growth.

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