Windows 10 Enterprise Share at 16.9% with 1903 Active Vulnerabilities, 2.9 Times Windows 11
As of 2026, Windows 10 retains a 16.9% share of enterprise PCs, with healthcare/pharma at 23%, consumer retail at 22.7% and SMBs at 21.4%. Windows 10 devices average 1903 active CVEs versus 652 for Windows 11, a 2.9 times higher risk. About 14% of Windows 10 machines use paid extended security updates, while 2% have no patches. HP reports 30% of its installed base still runs Windows 10. Microsoft's Windows OEM and device revenue fell 7% year on year, with OEM down 5%, as the end-of-support upgrade wave fades.
According to asset tracking and IT management firm Lansweeper, as of 2026 Windows 10 holds a market share of approximately 16.9% in the enterprise ecosystem, meaning about one in six enterprise PCs still runs the system. By industry, healthcare and pharmaceuticals have the highest share at 23%, followed by consumer retail at 22.7% and small and medium-sized businesses at 21.4%. These figures are based on actual scans of millions of enterprise-grade hardware devices, reflecting the installed base of Windows 10 as it approaches the end of official support in 2025.
On security, Lansweeper's statistics show that Windows 10 devices carry an average of 1903 active CVE vulnerabilities, compared with an average of 652 for Windows 11 devices. The security risk for Windows 10 is therefore approximately 2.9 times that of Windows 11, and the gap is widening as system updates cease. In terms of patch coverage, about 14% of Windows 10 devices have enrolled in the paid Extended Security Updates (ESU) programme, while approximately 2% of devices have no security patches installed at all.
PC maker HP disclosed to investors that about 30% of its installed base still runs Windows 10. HP said that users who migrated for gaming or other specific needs have already completed the transition, and it is difficult for the remaining users to change their intentions in the short term.
Microsoft's latest financial results show that Windows OEM and device revenue fell 7% year over year, with OEM revenue down 5%. During the earnings call, the company noted that the previous growth in Windows 11 was mainly driven by the upgrade wave triggered by the impending end of support for Windows 10. As that demand fades, market growth momentum has clearly weakened. Microsoft has introduced measures such as end-of-support and ESU extensions, and OEMs are also promoting Windows 11 devices, but hardware upgrade costs and user habits still lead a large number of Windows 10 users to continue using the system.
Why this event matters
The event has a measured impact on 1 industry. The strongest current signal is negative for General Software & IT Services, with intensity 50/100 and 70% confidence over a short term horizon.
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