error code c=343

Hi there Paul,
Welcome to the Reckon Community!

There have been a few other threads in relation to this error code.

The most recent did relate to a new Antivirus programme/feature which contributed to this problem. Check it out here -

https://community.reckon.com/reckon/topics/unexpected-error-c-343-and-unrecoverable-error-13472-9470...

This thread might also be of interest and contains some KB support articles -
https://community.reckon.com/reckon/topics/error-c-343-reckon-accounts-2015-on-server-2012-r2

Let me know how you get on

Cheers
Rav