Save Money: Switch from Windows 10 and Office 365 to Debian and Zoho

Windows 10 is approaching its end of life. Many companies face an expensive choice. Are you also wondering what to do when support ends?

Today, organizations pay unnecessarily high amounts for their IT solutions. These are often based on Office 365. There is a more cost-effective alternative. Many overlook this.

Zoho has more than 75 million users worldwide. The platform offers everything you need. This includes email with a custom domain, productivity tools, and 100% privacy. All this at a much lower cost compared to Microsoft 365. Zoho Mail also guarantees 99.9% uptime. This makes it a reliable alternative for businesses of all sizes.

Here, I show you how to switch from Windows 10 and Office 365 to Debian and Zoho. You can drastically reduce your IT costs without compromising productivity. I will go through each step of the process. This includes preparation, installation, testing, and post-migration support.

Why switch from Windows 10 and Office 365?

Organizations today face challenges. Costs are rising while support for Windows 10 is nearing its end. There are several important reasons why a switch can be beneficial. This is especially true as Microsoft changes its support policies.

The end of Windows 10: What it means for you

On October 14, 2025, Microsoft will officially end support for Windows 10. This means the operating system will no longer receive technical support, software updates, or security updates. Computers running Windows 10 will continue to function after this date. However, the lack of security updates will make your computer significantly more vulnerable to viruses and malware.

Organizations and businesses face particular challenges. Lund University has already begun preparing for this change. They warn of the increased security risks that will arise. These risks apply to computers still running Windows 10 after support ends.

Microsoft recommends upgrading to Windows 11. This provides continued support and security updates. However, many older devices running Windows 10 may not meet the hardware requirements of Windows 11. Debian can run on your existing hardware for many years to come. This makes it an excellent alternative instead of investing in new equipment.

Office products are also affected by this change:

• Support for Microsoft 365 apps on Windows 10 ends simultaneously with Windows 10 reaching its end of support
• Office 2016 and Office 2019 will no longer be supported on any operating system
• Office 2021 continues to work on Windows 10 but without support

High licensing costs and recurring fees

The constantly recurring costs are a crucial factor. Many are considering switching from the Windows and Office ecosystem. Linux distributions, including Debian, require no license fees at all. This means significant savings. Especially for organizations with many users.

Microsoft has increasingly moved towards a subscription model with Microsoft 365. You must continue to pay monthly or annually to access the software and its updates. For businesses with limited budgets, these recurring costs become a significant expense over time.

Windows 10 is the last Windows operating system to support older hardware without TPM 2.0. It also supports hardware without other advanced security features. Many therefore face a choice. They can invest in new hardware to run Windows 11. Or they can find an alternative. Debian offers a cost-effective way forward. This extends the lifespan of your existing hardware.

Limitations in flexibility and control

Windows 10 has been criticized for its forced updates. These often require a system restart. This can be particularly problematic in work environments. Disruptions lead to lost productivity or lost work. One user describes how an unplanned Windows restart resulted in a full day of lost work. This occurred in the middle of a development project.

Windows systems give the user limited control over:

• When updates are installed
• What data is collected
• How much system resources are used by background processes

Windows 10 is still the second most used Windows operating system. It has a global share of 42%. Windows 11 holds 55%. This shows that many users have not yet transitioned to the newer system. This may be due to hardware limitations or concerns about the increased requirements.

Debian and other Linux distributions offer greater flexibility and control over the system. You decide when updates should be installed. You choose which programs to run. You have full insight into system processes. Open source guarantees better privacy. The code can be reviewed by anyone.

Debian and Zoho can give you both financial savings and increased control. This is true as Windows 10 approaches its end of life.

Preparations before migrating

Migrating from Windows 10 and Office 365 to Debian and Zoho requires careful planning. Thorough preparations minimize risks. They ensure your transition is as smooth as possible.

Make a list of all users and files

Create a detailed inventory of all users, services, and files on your current systems. This step may seem simple but is fundamental for a successful migration. A serious administrator thoroughly understands the main roles each server has. Roles can change over time. Sometimes advanced users may have installed "wild" services.

Identify and document all devices that need to be migrated:

• All user accounts and their permissions
• Important files and their storage locations
• Programs and services used regularly
• Special settings and customizations

By mapping this, you get a clear picture of what needs to be moved. This also helps you identify any compatibility issues. These can arise when switching to Debian and Zoho.

Back up important data

Before making any changes, you must perform a full backup of all your data. This makes it possible to restore information if something goes wrong during the migration. A good backup is the only protection for what is absolutely most valuable in digital contexts: your files.

Create backups of:

• Documents, images, and other user files
• Email archives and contacts
• Configuration files (often located in /etc/ on Unix systems)
• Database dumps in standard format (e.g., SQL for databases or LDIF for LDAP servers)

For Windows 10, you can use the built-in backup function. It helps you save files, photos, settings, apps, and login credentials. Store backups in multiple geographically separate locations. This protects against local failures. It provides a safety net that ensures you can quickly return to a stable state if needed.

Communicate the change

Communication is key to a successful migration. Inform all affected parties well in advance before starting the process. It is wise to inform your users about the project before migration begins.

To help users adapt, it can be useful to install common free software on their workstations. This should be done some time before the migration. Programs like LibreOffice and Mozilla can be introduced in advance. Users will then already be familiar with them when the transition to Debian is completed.

Create a detailed timeline for the migration. Share it with all users. IT teams need to know timelines and resource requirements. Business users should be informed of any downtime. Regular updates and clear escalation protocols ensure everyone stays informed throughout the migration.

Create Zoho and Debian accounts in advance

Finally, before starting the migration itself, create the necessary accounts and prepare installation media. For Debian, this means choosing the correct version based on your needs. You must also create installation media.

For Zoho, I recommend registering a Zoho Workplace account in advance. Then you can start configuring email addresses and user accounts. This saves time during the migration itself. It also allows you to test functionality before moving the entire operation.

By preparing these accounts in advance, you can verify that everything works correctly. You ensure that you have all necessary login credentials available. This is important when it's time to perform the actual migration from Windows 10 and Office 365. This way, you avoid unnecessary delays and complications during the transition process itself.

With these preparations in place, you are ready to take the next step: installing Debian as a replacement for Windows 10.

Install Debian as a replacement for Windows 10

Windows 10 is reaching its end of life. It's time to consider a long-term alternative. Debian offers a stable, secure, and free operating system. It can replace Windows 10 on your existing hardware. The installation process may seem complicated for beginners. With the right guidance, the transition will be both smooth and trouble-free.

Choose the right Debian version

Debian comes in several different versions. Choosing the right one is crucial for a successful transition from Windows 10. The three main versions are:

Debian Stable is the most recommended option for most users. This is especially true for businesses and beginners. This version is thoroughly tested and offers a stable environment with minimal risk of bugs. If security or stability is important to you, choose Stable. Period. For servers, especially those with strong stability requirements or that are exposed to the internet, Stable is absolutely the safest choice.

Debian Testing contains newer software than Stable. It is less prone to crashing than Unstable. However, problems can take days or sometimes months to fix. Testing does not have permanent security support. If you are an experienced desktop user who doesn't mind encountering occasional bugs, Testing might be an option.

Debian Unstable has the latest software versions. It changes frequently, which can cause instability. Problems are usually fixed within a few days. If you prefer to always have the latest software versions and can handle potential bugs, Unstable might be for you.

If, after reviewing the options, you are still unsure, stick to the Stable version. It is by far the strongest and safest choice. This is especially true for corporate environments.

Create installation media

You need to create installation media once you have decided which Debian version you want to use. For most, a USB stick is the easiest option.

Download the Debian image from the official website (debian.org). For computers with limited internet access during installation, choose the "CD/DVD image." If you have a stable internet connection, the "Network Install" image (netinst) is a better choice. It is smaller and downloads the latest packages during installation.

Create a bootable USB drive. If you do this from Linux, you can use the following command in the terminal:

sudo cp debian.iso "$TARGET_DEVICE"
sudo sync

Be careful to write to the entire device (e.g., /dev/sdb) and not to a partition (e.g., /dev/sdb1).

For Windows users, you can use tools like Rufus. You must select "DD" write mode just before writing begins. ISO mode will modify the image on the target medium.

ALWAYS back up all your work before making any major changes to your computer. The Debian installation has been thoroughly tested. However, it cannot prevent power outages or mistakes during the installation process.

Install and configure basic settings

Now it's time to install Debian:

Boot the computer from the installation media. You may need to change the boot order in BIOS/UEFI to boot from the USB drive.

Select language and location. For a Swedish-language installation, select Swedish as the language. This also affects other relevant default choices such as keyboard layout.

Partition the hard drive. This is a crucial step where you divide the available space on the hard drives. If you want to keep Windows 10 installed (for dual boot), you need to shrink the Windows partition. You must free up space for Debian.

For dual boot with Windows, the installer shows available hard drives, their partitions, and any free space. Highlight the Windows partition and press Enter to access a menu of available actions. Choose to shrink the partition to the desired size.

For full disk installation, select "Use entire disk" in the partitioning step. Be very careful. This will erase all data on the selected hard drive.

Choose desktop environment. If you do not choose a specific desktop environment and leave the default "Debian desktop environment" checked, GNOME will be installed. If you choose both "Debian desktop environment" AND a specific desktop environment, the specific one will take precedence over GNOME.

Configure the system. Follow the instructions to set up user accounts, passwords, and basic system settings.

Restart the computer. After installation, restart the computer, now with Debian replacing (or alongside) your previous Windows 10 system.

After installation, you will have a stable, secure, and free operating system. It is not dependent on Microsoft's support cycle. Now you are ready to move to the next step: setting up Zoho as an alternative to Office 365.

Set up Zoho as an alternative to Office 365

After installing Debian, the next step is to configure Zoho as an alternative to Office 365. Zoho Workplace offers a complete package of productivity tools. These can replace Microsoft's office applications when Windows 10 reaches its end of life.

Register a Zoho Workplace account

Creating a Zoho Workplace account is quick and easy. Over 450,000 companies already rely on Zoho for their office needs. Here I go through the steps:

1. Visit Zoho's website and select "Zoho Workplace"
2. Click "Sign Up" or "Get Started Free"
3. Fill in your basic information and the domain you wish to use
4. Select the appropriate subscription plan. Even the free version offers plenty of functionality for smaller teams

Marc Fishman, Sales and Marketing Director at ONE Business Solutions, confirms that Zoho's collaboration tools have streamlined communication. This applies to their entire team. The tools have helped them increase their business operations by 12%.

Verify domain and configure DNS

After registration, you must verify that you own the domain. You must also configure DNS settings. This step is crucial for email services to work correctly:

1. Log in to your Zoho account and navigate to the domain management section
2. To manage DNS records for your domain, click "Manage" next to your domain
3. Select "Manage DNS" and then "Manage Records"
4. Under "Hostname", enter the subdomain (e.g., "www")
5. From the "Type" dropdown menu, select the appropriate record type (A, CNAME, MX, etc.)
6. Enter the corresponding value in the "Value" field and click "Save"

For domain verification, you can choose between TXT, CNAME, or HTML method. The CNAME method is usually the easiest. Once verification is complete, you can start using Zoho Mail with your custom domain.

Create users and assign roles

Once the domain is verified, add users and assign permissions:

1. Log in to the Zoho Workplace administrator portal
2. Click "Users" and then "Add User"
3. Under "Basic Information", enter:
   • First name, last name, and display name
   • Email address (if your domain is verified, you can create domain-specific email addresses)
4. Fill in company information such as employment ID, job title, department, and reporting structure
5. Select the user's language, country, and time zone
6. Add additional information such as date of birth, gender, employment date
7. Uncheck "Send notification email" if you want to share login credentials manually

Users added with an email address for a verified domain are added directly. They are marked as "Not connected yet" until they log in to Zoho.

Import email, contacts, and calendars

Finally, you need to migrate data from Office 365 to your new Zoho environment. Zoho offers built-in migration tools that simplify the process:

1. Log in to Zoho Mail Admin Console and select "Data Migration" from the left menu
2. Click on "Start Data Migration"
3. Enter a name for the server configuration and select "Add New Server Details"
4. From the "Choose Protocol/Application" dropdown menu, select "Microsoft 365" and click "Login"
5. Authenticate your Microsoft 365 account when the login window appears
6. Select the users and data to be migrated (email, contacts, calendar)
7. Specify the date range for emails to be migrated
8. Click "Start Migration" and monitor the progress from the dashboard

The migration process is straightforward and can be performed without disruption. Part of your company can migrate to Zoho first. The rest can remain with your current provider until you are ready to move everyone. Zoho's Office editors also work seamlessly with existing Word, Excel, or PowerPoint files.

With these steps, you have successfully set up Zoho as an alternative to Office 365. This provides you with a cost-effective solution as Windows 10 approaches its end-of-life.

Test and verify that everything is working

After the installation of Debian and the configuration of Zoho, it's time to check that everything is working as it should. Thorough verification reduces the risk of disruptions. This is important when you fully leave the Windows 10 environment.

Check email flow and file access

Start by verifying the email migration. According to user experiences, sometimes not all emails are migrated from Outlook 365 to the Zoho account. Typically, only the last 12 months are transferred. If this happens, contact Zoho's support team via email at support@zohomail.com. Provide your account details.

For file access, check the following:

• Open WorkDrive and verify that all migrated files are correctly organized in folders
• Confirm that users have appropriate access levels based on their roles
• Test uploading and downloading files to ensure data transfer is working
• Verify that file sharing, both internal and external, works as expected

Test collaboration tools like Zoho Mail and WorkDrive

WorkDrive offers several key features for team collaboration. These need to be tested. First, try sharing files via email addresses. Assign role-based access to collaborate with clients or partners. Then, check that file version management is working. You should be able to manage multiple versions of the same file without saving different copies. You should also be able to revert to previous versions if needed.

Also, check real-time notifications for all changes made to shared files. This makes it easier to gather feedback from multiple reviewers in one place. Finally, try creating password-protected sharing links. These can have expiration dates, download restrictions, and user information requirements.

Troubleshoot common issues

If you encounter problems with email migration, especially with older messages, this may be due to limitations in the migration tool. Contact Zoho's support team. They can troubleshoot the migration and help you transfer the remaining emails.

For security issues when sharing files, enable OTP authentication. This adds an extra layer of security for externally shared files. This is especially important now that Windows 10 will soon reach its end-of-life. Security updates will cease.

If there are issues with user accounts, check that users added with an email address for a verified domain appear correctly. They are marked as "Not Connected Yet" until they log in to Zoho for the first time.

Thorough testing and verification ensure a smooth transition. This applies from Windows 10 and Office 365 to Debian and Zoho. You also minimize the risk of data loss or business disruptions.

Support and training after migration

Once the migration is complete and the systems are verified, users need support. They must adapt to the new environment. A successful transition requires providing the team with the right resources and tools.

Provide the team with access to guides and videos

To facilitate the transition from Windows 10 to Debian and Zoho, provide your team with access to training materials. Zoho offers comprehensive documentation, video guides, and web-based manuals. A library of product overviews and explanatory videos helps users understand basic functions.

Being curious about the details contributes greatly to better overall management of the organization's transition. It makes a huge difference to how smooth the process becomes!

Plan an introduction to Zoho apps

Organize training sessions for your employees. Zoho offers several training options:

• Classroom training for direct interaction with trainers
• Virtual training for flexibility
• Company-specific training tailored to your specific needs

These sessions can be adapted to your business model and goals. This makes the transition from Windows 10 smoother.

Set up support channels for questions

Finally, establish clear support channels for users who need help. Zoho offers:

• Email support with quick response times
• Chat function for product-related questions
• Community forum support for user-driven discussions

For technical support with Debian, official documentation is available. There are also user forums that help with common questions. This is valuable when Windows 10 support ends.

Please ask us if you are curious to know more about our processes and experiences with similar migrations.

Conclusion

The switch from Windows 10 and Office 365 to Debian and Zoho offers significant advantages. This applies as Windows 10 reaches its end-of-life. Costs are drastically reduced. You avoid both operating system license fees and recurring subscription fees for office software. You also gain increased control over your system. You get better privacy and the ability to extend the lifespan of your existing hardware.

The migration process requires careful planning and preparation. By following the steps in this guide, the transition can be smooth and trouble-free. Data backup, clear communication with the team, and thorough testing after migration ensure that operations can continue without interruption.

Many users find that the combination of Debian and Zoho actually offers more features. This is compared to what they previously had access to in the Windows environment. Zoho's collaboration tools improve team communication. Debian provides stable performance without forced updates or reboots.

Which path will you choose when Windows 10 support ends?

This transition is not just about saving money. You also get a more modern, secure, and flexible way of working. This can be adapted to your specific needs. Organizations that want to take control of their IT costs and extend the lifespan of their hardware should strongly consider Debian and Zoho as their next step.

Please ask if you want to know more about how your organization can benefit from this transition.