Hi, Hope you are doing good ! From the below error,
Executing E:\Programme\postgresql/pgc update
Script exit code: 255
Retrieving the remote list of latest component versions (versions.sql) ...
Program ended with an error exit code
It seems that the updater is not able to connect to the specified link so could you please try running the installer with the open network access and check if its getting completed. If you still face the issue then share the install.log from location "E:\Programme\postgresql\data\logs\pg10\install.log" with the exact version and the name of the installer file which you are executing.
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