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Question

Excel VBA Macro Error - Class not registered

  • February 24, 2026
  • 1 reply
  • 37 views

TrustCo816

Our team uses an Excel VBA macro to automate actions through Rocket Terminal Emulator (BlueZone). It was created on machines and is used by users that have Excel 32‑bit and the macro runs without any issues. New team members, however, are on Excel 64‑bit, and they are all getting the following error:

 

Have anyone one else had similar errors and what was your solution?

1 reply

Son Pham
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  • Rocketeer
  • February 25, 2026

Hi ​@TrustCo816 

This issue is caused by a bitness mismatch between Rocket Terminal Emulator and Microsoft Excel. Both applications must use the same bitness. You can resolve this by either reverting Microsoft Excel to 32‑bit or installing the 64‑bit version of Rocket TE.