Check which Excel you have
In Excel, open File, then Account, then About Excel. The first line says 32-bit or 64-bit.
Reinstall the 32-bit version
VT's advice is that your Office or Microsoft 365 licence should let you reinstall the 32-bit desktop version. Remove the 64-bit version, then install Office again from your Microsoft account, choosing the 32-bit version in the install options.
Reinstall the VT add-ins
Install VT again so the add-ins attach to the new Excel.
After an Excel update
VT has published fixes when a Microsoft 365 update stopped the add-ins working, including a system error after a recent Excel update. Its blog lists the current ones.
Accounts without Excel
Accountin produces FRS 105 micro-entity and FRS 102 Section 1A small company accounts inside the software, with the notes filled in and checked, and files them with Companies House. There is no add-in to keep in step with Excel.
Move your practice to Accountin
Register and we will plan the move with you, client by client.