7Search.ccunknown error trying to lock fileunknown error trying to lock fileunknown error trying to lock file excelunknown error trying to lock file sharepointunknown error trying to lock file excel 2016unknown error trying to lock file wordunknown error trying to lock file powerpointunable to obtain file lockunable to lock fileunable to get file lockfailed to lock the filefail to lock the fileunable to create lock file