Hello, please find attached the cygcheck output - apologies for the oversight. It does NOT make a difference whether the bash, run from MinTTY (desktop shortcut), is run “As Administrator” or as regular user, the error occurs in both scenarios. Running it from PowerShell (both Admin and reg. user) yields the same error. Thank you for your help - best wishes, Immanuel. P.S. W10 is an older version of Cygwin, but using that one on W11 produces the same erroneous results… On 15. Jan 2023, at 23:19, Adam Dinwoodie wrote: On Sun, 15 Jan 2023 at 22:05, System Administrator via Cygwin wrote: Hello, I am trying to migrate my framework to Windows 11 running Cygwin. When executing vmstat it returns the following error: "Unable to create system stat structure” Using the very same packages (install files) on Windows 10, produces the proper vmstat results (i.e. no error). I’ve tried W11 pro and Enterprise - same difference (none.) Windows 11 is running in a VMware VM. W11 is the December version wit the latest updates (as of today). The working W10 is running on the same physical hardware, using the same version of VMware, also in a VM. Cygwin is the latest version 3.4.3, with the latest props-ng package (4.0.2-1) Any help (or at least hint) is greatly appreciated. Can you provide the cygcheck output, per https://cygwin.com/problems.html? It might be useful to have the cygcheck output from both the Win10 and Win11 VMs to compare, but the Win11 VM where things aren't working is going to be the most useful one there. It might also be useful to know how you're calling vmstat: are you doing it from a Cygwin Bash shell within MinTTY, or from a PowerShell prompt using Windows' console, or something else? And are you running with Administrator privileges? PRS System Administration mailto:sysadm@prs.de Patzschke + Rasp Software GmbH http://www.prs.de Bierstadter Straße 7 Fax: +49-(0)611-1731-0 D-65189 Wiesbaden Phone: +49-(0)611-1731-0 Patzschke + Rasp Software GmbH, Bierstadter Str. 7, D-65189 Wiesbaden Eintragung im Handelsregister: Amtsgericht Wiesbaden, HRB Nr. 22673 Geschäftsführer: Wolfgang Kechel, Till Immanuel Patzschke