1

What word is more preferable (or even correct) in following context:

Application is locked against modifications.

or

Application is locked from modifications.

Or, may be, both usage (against and from) are correct)?

2

My intuition says against is better than from.

However, I was surprised when I checked out what people really use in books. It seems like both (against and from) could be used. Here are some sentences I found:

  • If the application is locked against change, however, the Options menu cannot be installed, ...
  • That system'Il be locked up against any move I try to make. In Lock Read mode, the file is locked against others reading it.
  • ... (although it can't hurt and might help to avoid keeping the file uselessly “locked" against modification in some operating systems and settings).
  • Processes that attempt to read or write a file region locked against reading and writing by another ...

  • The application is locked from the user until the printing process completes.

  • In essence, your application is locked from closing completely until all of its shared objects are no longer needed in any other client application.
  • Individual data items or sets of data are locked from concurrent access if they are involved in a transaction.
  • When a templatized file is locked from an edit, both the generated page and the data content record (DCR) are locked.

However, when I tried searching for locked * changes and locked * access on Google Ngram, it's clear that the normal usage is "locked against changes (or access)", which confirms my intuition.

So, I believe that you could use either (locked against modifications or locked from modifications); though if I had to choose, I would choose against. However, if I may, I'd like to suggest these instead:

This application is locked, and no unauthorized modifications can be made.

This application is locked to prevent unauthorized modifications.1
1) This sentence was suggested by Nice in our chat room. All credits go to him.

Also note that we should write a determiner this or the article the, depending on the context, before the word application.

0

Not sure if the second one is incorrect, but

Application is locked against modifications.

against, sense 1 is better because "locked" and "modifications" have opposite meanings. When its locked you can't do modifications.

Also you may wish to say "The application..." depending on the context.

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