https://pwsh.in/tags/upgrade/Recent content in Upgrade on Vibhu Bhatnagar — PowerShell & Infrastructure EngineerHugo -- gohugo.ioenTue, 21 Jul 2026 15:37:51 +0530https://pwsh.in/posts/setupdiag-migration-guide/Tue, 21 Jul 2026 15:37:51 +0530https://pwsh.in/posts/setupdiag-migration-guide/<h2 id="why-this-tool-exists">Why this tool exists</h2> <p>Think of an in-place OS upgrade like renovating a house while people are still living in it. Windows Setup has to migrate settings, drivers, and applications from the old structure into the new one without tearing anything down first. When the renovation stalls, Setup usually just tells you &ldquo;it failed&rdquo; with a cryptic code like <code>0xC1900101-0x20017</code> — it doesn&rsquo;t tell you <em>which wall</em> it got stuck on.</p>