Sony doesn't want Vaio owners to upgrade to Windows 10
Major manufacturers are relishing on the fact that their notebooks are Windows 10-ready and are encouraging users to take advantage of the limited-time free upgrade. One company, however, is conspicuously taking a step back from the crowd.
The official Sony support page is cautioning Vaio owners to "wait to upgrade your PC until the drivers are ready" and is offering no further explanation for the unexpected actions. Instead, the Japanese manufacturer is simply stating that tests are being run "as fast as possible", presumably for compatibility concerns. No specific Vaio PCs are mentioned in the support page as these vague reasons encompass all Windows 7/8/8.1 models. As it current stands, Sony is promising updates by the end of August, October, and November on its official Windows 10 plans.
While Sony is giving no specific details, DailyTech is hypothesizing that the manufacturer may be experiencing driver signing issues on Microsoft's latest OS. The source notes that Sony is one of the few manufacturers who produce many of its own components in-house and so is responsible for the compatibility of individual modules, such as webcams. The other possible and worst case scenario would be Sony not recommending the upgrade for the life of one or more of its products.
Vaio support has always been subpar compared to other major manufacturers, so owners should be prepared to stick with an older Windows version for the time being or take the risk and upgrade ahead of Sony's eventual announcements.