I believe that initializing the cmd command prompt for Anaconda has inserted a startup script that is now broken. Therefore – and this is the problem I want to fix – I cannot open cmd anymore, as it immediately says

"&" kann syntaktisch an dieser Stelle nicht verarbeitet werden.

which is German for

"&" can syntactically not be used here.

Afterwards, the process terminates.

Where can I find the startup script or how could I fix the issue otherwise?

Brief diagnostics background

The issue does not occur if I open the powershell instead of cmd or if I open cmd as administrator. The issue occurred first after I reinstalled Anaconda. This information brought me to the hypothesis mentioned above.