vba - After database corruption, errors are being produced -

I had a partition database that worked fine on client machines for more than 2 years due to unknown circumstances the database was corrupted .

  2147352567 2448 
 
 
 
 
 
 
 
 
 Will be thrown personally, when a user will take a certain action. 
 
 How could it be that these errors suddenly started showing themselves when everything was working fine before? 
 
 Without the desire to quench this question with the code, the form is based on the error when the error occurs when: 
 
 
 A form is open and an Excel spreadsheet also records that Can be open to related. 
 
 A related field is updated in the database record on saving / closing of Excel spreadsheet. 
 
 User decides to 'update Excel spreadsheet' or 'save and clause' 
 
 There are errors on the before_Update event on the access form 
 
 
 
 Thanks in advance for any assistance. 
 
 
 I have solved this code by including it in the appropriate update record: 
 
 
 if Me.Dirty = true - me .dt = false || Termination if 
 
 
 Still does not understand how errors started even after DB was corrupted? Forms / buttons / actions were used by users during their working week for more than 2 years.