> For the complete documentation index, see [llms.txt](https://docs.devolutions.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.devolutions.net/rdm/da/knowledge-base/troubleshooting-articles/prevent-data-loss-when-upgrading-devolutions-server.md).

# Undgå datatab ved opgradering af Devolutions Server

Undgå datatab i Devolutions Server 2025.1 ved at opdatere Remote Desktop Manager til version 2025.1, før tilladelserne Brugerdefineret plus Nedarvet aktiveres.

Aktivering af [tilladelsessættet Brugerdefineret + Nedarvet](/rdm/da/user-group-based-access-control/permissions.md) i Devolutions Server 2025.1, mens en forældet version af Remote Desktop Manager (2024.3 eller tidligere) kører, kan medføre datatab.

### Løsning

For at undgå dette problem skal De opdatere Remote Desktop Manager til ***version 2025.1***. Hvis der opstår datatab, skal De kontakte [Devolutions kundesupport](mailto:service@devolutions.net) for at få hjælp.


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