How do I unlock a closed period in QuickBooks?

STEP 1. Click the Gear Icon.

STEP 2. Select Account and Settings.

STEP 3. Go to the Advanced tab.

STEP 4. Under the Accounting section, put a check mark in the Close the books box.

STEP 5. Enter the Closing date.
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STEP 6. Set whether a password is needed to change closed transactions.

STEP 7. Click Save and Done.