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That's a long time to be stuck, especially after multiple rounds with support that haven't gone anywhere. Unlike most numbered bank connection errors, 9999 doesn't have its own dedicated troubleshooting article, since it typically points to a back-end issue that needs to be investigated on QuickBooks' side rather than something fixable from a single documented setting. That said, a few general steps are worth trying while any back-end fix is in progress.
Try a manual update, then reconnect
- Go to Accounting, then Bank transactions.
- Select Update.
If that doesn't help, try signing in through an incognito or private browser window and updating again. If the error still won't clear, disconnecting and reconnecting the account can sometimes restore the connection:
- Select the tile for the account, select the pencil icon, then select Disconnect account.
- Reconnect it using Connect account or Link account, making sure to select the correct date range so you don't end up with duplicate transactions once it's back online.
Bridge the gap while it's investigated
While the connection is down, you can bring transactions in manually so your books don't fall behind:
- Go to Accounting, then Bank transactions.
- Select the Link account dropdown, then Upload from file, and follow the prompts to upload a file from your bank.
If it's been going on for a while
Since this is the kind of error that often comes down to something in the connection itself rather than a setting you can change on your end, if it's persisted for more than a few days despite the steps above, it's worth reaching out to support directly so they can investigate the connection further.
Resources:
Disconnect accounts connected to online banking
Manually upload transactions into QuickBooks Online
Still stuck after all that? Let us know and we'll take another look.
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