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: This version supports mail files and applications exceeding a 64 GB logical size.

The 64-bit client requires a 64-bit version of Windows. It also only works with Domino servers running 8.5.x or later. It is not backward compatible with Domino 6.x or 7.x servers in some advanced replication features.

Authorized IBM/HCL business partners sometimes retain archives of old media. If you have a support contract, your VAR (Value Added Reseller) can provide the ISO image for the 64-bit client.

IBM (now HCL) no longer hosts this version on public servers. Legal access depends on your situation:

Native 64-bit support for the Notes client only arrived much later with the release of . If you specifically need version 8.5.3, you must use the 32-bit installer. Essential Information for Lotus Notes 8.5.3

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