AOL/AIM error in POP Peeper (fix available)

January 19, 2018

Update (Jan 20): AOL has discovered the problem and fixed it on their end, so this patch is no longer necessary.  However, this change will be included in future versions of POP Peeper in case it ever happens again (with any IMAP service).

Today, AOL/AIM accounts that use IMAP have started reporting an error in POP Peeper, typically a “time out” error.  The reason for this is because a response from the aol server includes an invalid null character and this prevented POP Peeper from parsing the response correctly.  A patch is available for download so that you can get your aol and aim accounts working properly again.  Most likely, a full update (POP Peeper v4.5.1) will occur soon in response to this issue (and will address a couple of other issues, as well).


  1. Download the patch
  2. Exit POP Peeper
  3. Open the zip file you downloaded in step #1 and copy Imap.dll to the folder where you have installed POP Peeper.  This is typically:
    C:\Program Files (x86)\POP Peeper\
  4. Restart POP Peeper
  5. Test your AOL/AIM accounts
  6. If you still have an issue, make sure that you applied the patch correctly:
    • From the main menu, select Help / About
    • Find “IMAP” in the list and the ‘Current’ column should be: