Impossibile eliminare la directory di Foxit Reader, nemmeno come amministratore, su Windows 8

Ho provato ad aggiornare Foxit Reader e ha lasciato la directory in uno stato illeggibile. Non riesco a visualizzare la directory e nemmeno a cancellarla, nemmeno come amministratore. Come faccio a sbarazzarmene per poter reinstallare?

C:\Program Files (x86)\Foxit Software>takeown /f "Foxit Reader"
ERROR: Access is denied.

C:\Program Files (x86)\Foxit Software>takeown /a /f "Foxit Reader"
ERROR: Access is denied.

C:\Program Files (x86)\Foxit Software>icacls "Foxit Reader" /setowner Administrator
Foxit Reader: Access is denied.
Successfully processed 0 files; Failed processing 1 files

Anche eseguito chkdsk, che non ha riscontrato alcun problema:

C:\Program Files (x86)\Foxit Software>chkdsk
The type of the file system is NTFS.
Volume label is OS.

WARNING!  F parameter not specified.
Running CHKDSK in read-only mode.

CHKDSK is verifying files (stage 1 of 3)...
  643840 file records processed.
File verification completed.
  7590 large file records processed.
  0 bad file records processed.

CHKDSK is verifying indexes (stage 2 of 3)...
  819780 index entries processed.
Index verification completed.
  0 unindexed files scanned.
  0 unindexed files recovered.

CHKDSK is verifying security descriptors (stage 3 of 3)...
Security descriptor verification completed.
  87971 data files processed.
CHKDSK is verifying Usn Journal...
  36537832 USN bytes processed.
Usn Journal verification completed.

Windows has scanned the file system and found no problems.
No further action is required.

 961180671 KB total disk space.
 283748976 KB in 547635 files.
    271996 KB in 87972 indexes.
         0 KB in bad sectors.
    778755 KB in use by the system.
     65536 KB occupied by the log file.
 676380944 KB available on disk.

      4096 bytes in each allocation unit.
 240295167 total allocation units on disk.
 169095236 allocation units available on disk.

Il problema era che Brother Control Center aveva un blocco sul file. Non so perché Brother Control Center era in esecuzione - non l'ho eseguito, non si avvia al boot - ma aveva un lucchetto. Ho ucciso il processo e la directory è scomparsa. Ho trovato il blocco con "Process Explorer" e ho cercato "Foxit Reader". C'erano due blocchi per lo stesso processo, 'BrCtrlCntr.exe'.