1994 e34 525 tds

[Wodanaz]

Hi guys

I've bought a seemingly in very good condition e34 525 tds from 1994 and I didn't drive it for about a week
Today I went for a ride and took a different remote (which started the alarm for the first time in my possession....)

Suddenly I tried opening the passenger window and it didn't work
Also the back one on the right didnt work either

Everything else is working (sunroof, left side power windows, electrical rear view mirrors....) Just the right side power windows that are gone

Any ideas?

May I inadvertently locked something?

I can hear the window motor working but nothing happens....

Hekp?

Thanks in advance

M