I cannot open packages/projects by doubleclicking in Explorer

Since today I can no longer open projects, packages and file by doubleclicking on them in Explorer.

When I doubleclidk on a file in Explorer, Trados opens a new session and gets me to the projects list. It does not go any further.

The version I use is 2021 SR2, 16.2.12.9338

Please help? 

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