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· 5 Min. Lesezeit· Aktualisiert am 2026-02-14Altes Office vor Office 2024 sauber deinstallieren
Office 2016, 2019, 2021 und Microsoft 365 können bei der Installation von Office 2024 zu Aktivierungskonflikten führen. Hier ist das Verfahren zur sauberen Deinstallation, das stets zuverlässig funktioniert.
- Office 2024
- Migration
- Problembehandlung
Warum eine saubere Deinstallation wichtig ist
Office hinterlässt Aktivierungstoken, Registrierungsschlüssel, Click-to-Run-Streamer-Einstellungen und gemeinsam genutzte MSI-Komponenten. Eine Installation von Office 2024 auf einem unvollständig deinstallierten System führt häufig zu Fehler 0x426-0 oder der Meldung „Eine andere Version wird installiert" – und Office lässt sich dann nur schwer reparieren.
Die saubere Vorgehensweise kostet 10 Minuten extra und spart stundenlange Fehlersuche.
Schritt 1 – Deinstallation über die Benutzeroberfläche
Einstellungen → Apps → Installierte Apps. Suchen Sie nach Einträgen wie „Microsoft Office", „Microsoft 365 Apps" oder „Office 16/19/21" und deinstallieren Sie diese. Starten Sie anschließend den PC neu.
Schritt 2 – SaRA-Deinstallationstool ausführen
Laden Sie den Microsoft Support and Recovery Assistant von microsoft.com/sara herunter. Wählen Sie „Office und Office-Apps" → „Ich habe Office installiert, habe aber Probleme beim Deinstallieren" → Führen Sie das Tool aus. Es entfernt Registrierungsüberreste, Click-to-Run-Rückstände und Aktivierungstoken.
Nach SaRA neu starten
Überspringen Sie den Neustart nicht – ausstehende Dateioperationen müssen abgeschlossen werden.
Office 2024 installieren
Verwenden Sie das Installationsprogramm aus Ihrer Bestellbestätigung oder das Office Deployment Tool (siehe unsere ODT-Anleitung).
Mit dem Produktschlüssel aktivieren
Öffnen Sie eine beliebige Office-Anwendung → Anmelden oder Produktschlüssel eingeben. Die Aktivierung ist in Sekunden abgeschlossen.
Einstellungen behalten
Benutzerdokumente in Dokumente/, OneDrive/, Desktop/ werden bei der Office-Deinstallation nicht verändert. Outlook-PST/OST-Dateien in %APPDATA%\Microsoft\Outlook bleiben ebenfalls erhalten – Office 2024 bindet sie beim ersten Start automatisch wieder ein.
Häufige Fragen
- Verliere ich meine Outlook-E-Mails?
- Nein. Outlook-Datendateien (.pst/.ost) bleiben bei der Deinstallation erhalten. Wenn Sie Exchange oder M365 nutzen, liegen Ihre E-Mails ohnehin auf dem Server.
Empfohlene Lizenzen
Verwandte Guides
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Complete step-by-step guide to installing Office 2024 from your product key, including the Office Deployment Tool route for Pro Plus.
- Office Deployment Tool walkthrough
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