Quickbooks File Repair — C=43 (can't read transaction - usually incomplete transaction)

QuickBooks error C=43 means the program could not read a transaction, and as the code's own description notes, it is usually an incomplete transaction that triggers it. The original diagnosis is encouraging: this is a recoverable error.

What the C=43 error means

C=43 is a read failure. QuickBooks reached a transaction in the company file and could not parse it — commonly because the transaction was only partially written and never fully committed. The data around it is normally intact, so the challenge is repairing or skipping the one incomplete record, which is why most C=43 files can be recovered.

Symptoms you'll typically see

• C=43 appears when opening the file or when viewing a particular transaction or report.
• The error recurs at the same point, pointing at one damaged record.
• Verify Data fails or Rebuild stalls when it reaches the incomplete transaction.
• The error first appeared after a crash, power loss, or abrupt shutdown.

Common causes

• A transaction that was half-written when QuickBooks closed unexpectedly.
• A power loss or forced shutdown during a save operation.
• Network instability in multi-user mode interrupting a write.
• Disk problems on the drive holding the .QBW file.

What you can safely try first

Make a copy of the company file and work only on the copy — repeated opens of a damaged file can overwrite records that are still good. On the copy, run Verify Data to confirm the damage, then try Rebuild Data. If you keep a recent backup or a matching .TLG transaction log from before the error, restoring it is often the cleanest fix. Test the file on a local drive rather than over the network. If Rebuild loops or cannot complete, stop and avoid further forced opens.

When professional recovery is the safer path

A C=43 that survives Verify and Rebuild needs the incomplete transaction repaired or removed at the data level, which the in-app tools cannot do. Our engineers read past the damaged record, reconstruct what can be saved, and return a file that opens cleanly, all in-house in North America and never sent overseas, backed by our no-data, no-charge guarantee. See how QuickBooks data recovery works, or start a recovery.