With WMIC now deprecated and being removed from newer Windows installations, how many systems or tools have actually been affected? I have already replaced one application, but a lot of custom scripts still rely on commands such as retrieving BIOS serial numbers, UUIDs, computer details, and mapped-drive information. What replacements or migration strategies are people using?
5 Answers
The commands I miss most are the short ones for BIOS serial numbers, product UUIDs, and computer names. They were convenient for quick provisioning and inventory work, even though the PowerShell replacements are more modern. Mapped-drive inspection is still awkward too, especially when you need both the drive letter and the account that established the mapping; there is not always a similarly simple one-line replacement.
WMIC was replaced by PowerShell tooling a long time ago, so we treated this like any other scripting deprecation: identify every consumer, rewrite the queries, preserve the output format, and test on clean installations. The hardest part was usually remembering the new cmdlet names, not the technical migration itself.
None of our systems broke because we migrated away from WMIC years ago. For inventory scripts, we switched to Get-CimInstance and kept the same output field names so our CSV exports and reports did not need major changes. We also tested everything under the same service accounts and 32-bit or 64-bit contexts used by scheduled tasks, since some apparent WMIC problems were really permission or execution-context issues. A small compatibility wrapper helped us finish the migration gradually.
The bigger issue is not the removal itself; it is that some people ignored the warning for years. WMIC had been signaling that it was deprecated for a long time, was no longer included by default on newer builds, and Microsoft gave repeated notice that it would eventually disappear. Scripts should be reviewed whenever a tool is deprecated instead of waiting until a fresh installation exposes the problem.
The replacement for most hardware queries is Get-CimInstance. For example, BIOS information can come from Win32_BIOS and system details from Win32_ComputerSystem. It is less memorable than `wmic bios get serialnumber`, but it is the supported approach and works well once the commands are added to reusable scripts.
I still catch myself typing the old serial-number command from muscle memory. The PowerShell equivalent works, but WMIC was much easier to remember for quick manual checks.