Slow uploads with Outlook Integration

Windows users experiencing slow uploads on a fast internet connection may need to adjust TCP frames that are limited out of the box by the operating system.


  1. Click Start.
  2. Select Run and type REGEDIT
  3. Click Enter.
  4. Find the registry entry below:


  5. Create a new DWORD 32-bit string in Parameters and name it DefaultSendWindow
  6. Double-click the DefaultSendWindow entry and choose Decimal
  7. Type the value 1640960
  8. Restart the machine to apply the changes
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