Tapo Camera 'SD Card Abnormal' / SD Card Error Fix

What it means

When the Tapo app says the SD card is 'abnormal', shows an SD card error, or keeps asking you to format it, the camera can't reliably record to that card.
The most common reasons are using a card the camera doesn't support — wrong type, wrong format, or far over the size limit — or a card that's worn out or corrupted from being pulled out while recording.
Tapo cameras want a microSDHC/microSDXC card, Class 10 / U1 or better, formatted FAT32, generally up to 256 GB (512 GB on some newer models).

Affected Models

Tapo C100, C110, C120
Tapo C200, C210, C220 (pan/tilt)
Tapo C310, C320WS, C325WB (outdoor)
Tapo TC65, TC70, TC71
Other Tapo cameras with a microSD slot

Common Causes

Card not supported — wrong type, or capacity over the camera's limit
Card formatted in a way the camera can't read (needs FAT32)
Slow card (below Class 10 / U1) that can't keep up with continuous recording
Card corrupted by being removed while the camera was writing to it
Card not seated fully in the slot
Card simply worn out — flash memory has a finite number of writes, and 24/7 recording uses them up

How to Fix It

Power down before touching the card.

Unplug the camera (or remove the battery on a C420/C425) before inserting or removing the microSD card.
Pulling a card mid-write is the single biggest cause of corruption and these errors.
Reseat the card.

Take the card out, check the slot and the contacts for dust, and push it firmly back in until it clicks.
Power the camera back up and see if the error clears.
Format the card in the app.

In the camera's storage settings, choose to format the microSD card.
This wipes everything on it, so copy off any clips you want to keep first.
A fresh format fixes most 'abnormal' cards that are otherwise healthy.
Check the card is the right kind.

Use a genuine microSDHC/microSDXC card rated Class 10 or U1 (or higher), and stay within the camera's supported size — usually 256 GB, or 512 GB on some newer Tapo models.
Avoid no-name cards and very large or very slow cards; cheap counterfeit cards are a frequent cause of this error.
Replace the card if it still errors.

If a known-good, correctly-formatted card still throws the error, the camera's slot may be faulty — but far more often the old card is simply dead from constant recording.
Fit a new quality card; if a new card also fails, contact TP-Link support about the camera.

Frequently Asked Questions

How big a microSD card can I put in a Tapo camera?

Most Tapo cameras support microSD cards up to 256 GB, and several newer models go up to 512 GB — check your specific model's spec.
Going bigger than the supported size is a common cause of the 'SD card abnormal' message.
Also stick to Class 10 / U1 or faster cards from a reputable brand: a slow card can't keep up with continuous recording and an underrated or fake card will error out quickly.