GA4 Realtime works but reports are empty the next day

It’s a confusing one: you see yourself in GA4 Realtime, so tracking clearly works, yet the next day the standard reports show nothing. There are a few reasons, and most are not the disaster they feel like.

1. A data filter is excluding the traffic

The most common cause. If you have an internal traffic filter or a developer traffic filter set to Active, GA4 shows the traffic in Realtime but excludes it from the processed reports. If you’re testing from your own office IP or a flagged environment, that’s often why you vanish by the next day. Check Admin, Data Settings, Data Filters.

2. You’re looking at the wrong thing

• Date range not including today or set to the wrong days.
• The wrong property or data stream, easy when test and live both exist.
• Looking at a report that’s dimensioned in a way that hides low-volume data.

3. Thresholding is hiding it

When volumes are low and Google signals are on, GA4 applies data thresholding to protect anonymity, which can suppress rows in reports even though the data was collected. More traffic, or adjusting reporting identity, usually reveals it. This is a reporting behaviour, not lost data.

4. Processing and genuine faults

Standard reports aren’t truly real-time, so a few hours’ delay is normal, but a full day with nothing is not just processing. If it isn’t a filter, the wrong view, or thresholding, then check that a misconfiguration isn’t stopping events being processed, or that data retention settings haven’t wiped older data you’re looking for. At that point it’s worth a proper look rather than more guessing.

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