Windows 10 is present on 132 million PCs, but growth continues to slow.

Compared to the milestone of 110 million devices running Windows 10 after two months, the Windows 10 army only increased by 21 million machines in October.

Windows 10 remains the fastest-growing operating system in Microsoft's history, surpassing even Windows 7. This is thanks to the surge in PC upgrades to Windows 10 in the first month due to the company's free upgrade policy.

After three months since its release, Windows 10 is installed on 132 million PCs, according to the latest data from Net Applications.

This figure represents a 7.9% share of the total global PC market. In total, Windows 10's market share increased by 1.3 percentage points in October, lower than the 1.4 percentage point increase in September, and significantly lower than the record 4.8 percentage points in August, the first month Windows 10 was released.

Microsoft released Windows 10 on July 29th, and by the end of October, it had been exactly three months. Over the past three months, the majority of PCs running Windows 10 were upgrades from older machines running Windows 7, Windows 8, or 8.1.

If we consider only Windows PCs, Windows 10 gained 8.8% market share in October, an increase of 1.5 percentage points. Currently, Windows PCs account for approximately 90.4% of all PCs globally.

The figure of 132 million Windows 10 PC users, as calculated by Net Applications, is based on the 1.5 billion Windows devices globally that Microsoft often cites.

Microsoft has not released the number of Windows 10 users since October 6th, when the company stated that 110 million devices had installed the latest operating system.

Net Applications' Windows 10 user market share data shows a slowing growth trend for Windows 10. This coincides with observations from the Irish company StatCounter, although StatCounter's data shows a more pronounced decline in growth momentum.

According to StatCounter data, the market share of Windows 10 users increased by 1.4 percentage points last month, a sharp decrease compared to the 2.4 percentage point increase the previous month.

Data from Net Applications shows that, on average, about 706,000 devices installed Windows 10 each day in October, lower than the 794,000 devices installed in September.

There are now 132 million PCs running Windows 10, which is about 68% of Windows XP PCs and 56% of Windows 8/8.1 PCs, still a long way from Windows 7's market share.

Nevertheless, in the first three months, Windows 10 still grew faster than Windows 7 – Microsoft's most successful operating system, which only reached 8.2% of the total number of PCs running Windows after its first three months of release. But the difference is still quite small, with a market share of 8.8% compared to 8.2%, compared to a difference of 1 percentage point after two months between the two operating systems.

With approximately 132 million devices running Windows 10, Microsoft has only achieved 13.2% of its plan to bring Windows 10 to 1 billion devices by mid-2018.

This goal doesn't seem easy to achieve. Recently, Microsoft has been trying to force PC users running Windows 7 and Windows 8.1 to automatically upgrade to Windows 10.

According to PCWorld