Open up CMD and run as administrator, find your directory using either one of the first 2 lines(usually its the 2nd line) --------------------------------------------------------------------- cd /d %ProgramFiles(x86)%\Microsoft Office\Office16 OR cd /d %ProgramFiles%\Microsoft Office\Office16 for /f %x in ('dir /b ..\root\Licenses16\ProPlus2021VL_KMS*.xrm-ms') do cscript ospp.vbs /inslic:"..\root\Licenses16\%x" cscript ospp.vbs /setprt:1688 cscript ospp.vbs /unpkey:6F7TH >nul cscript ospp.vbs /inpkey:FXYTK-NJJ8C-GB6DW-3DYQT-6F7TH cscript ospp.vbs /sethst:e8.us.to cscript ospp.vbs /act