dziubek... The "Microsoft Windows Publisher" thing is the Windows Update Agent. If you still get this problem, it means WUA20 doesn't slipstream (properly) into a Polish Windows XP. In that case, download the attached file into the HFSLIP folder and run it (SOURCESS folder must be present). Then ZIP the following files and attach it here: - WUfiles.txt (generated by the attached file) - AU.IN_ from SOURCE\I386 - AU.IN_ from SOURCESS\I386 - HFSLIPWU.INF from SOURCESS\I386 getWU.cmd outputs a list of the WUA20 files in the SOURCESS\I386 folder including the creation date. getWU.cmd