Acrobat DC Crashes Immediately Upon Opening

[Trevor25837465p68g]

Like the title says, it crashes constantly now. It's current and up to date, but completely unusable. I've tried the usual tricks: uninstal, reinstall, turn the PC on and off, and just nothing. Worked as of the beginning of the month, but completely dead the last two weeks.

Need help fixing this 

[Doc Maik]

May the prefs are corrupt and should be reset by deleting some file. I only know a way for Indesign, but I suppose there is also one for Acrobat. Search the forum for it.