Canon Camera Memory Card Errors: A Comprehensive Guide

Dealing with errors on your Canon camera's memory card? Here's a straightforward guide to tackle common issues like Err 02, Err 03, Err 04, Err 10, and Err 99.


By Penny / Updated on January 10, 2024

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In the world of photography, the reliance on Canon cameras is unparalleled. These devices have become an extension of our eyes, capturing moments that are too precious to fade away. At the heart of this seamless operation lies the humble memory card, a small but crucial component that can sometimes throw a wrench into the gears. Canon camera memory card errors, indicated by codes such as Err 02, Err 03, Err 04, Err 10, and Err 99, can be a photographer's worst nightmare. 

Canon Camera Memory Card Errors And Solutions

This comprehensive guide aims to unravel the mysteries behind these errors, providing practical solutions for a smoother photography experience.

Understanding Canon Memory Card Error Codes

Discovering resolutions to Canon camera memory card errors, such as Err 02, Err 03, Err 04, Err 10, and Err 99, is crucial for smooth photography experiences. Let's delve into effective troubleshooting steps while also exploring the role of MyRecover in ensuring secure and reliable data recovery.

Canon Err 02: The Card Cannot Be Accessed

One of the most frustrating errors a Canon user can encounter is Err 02, signaling that the card cannot be accessed. This error often stems from the use of incompatible cards, incorrect insertion, or dirty terminals. To tackle this issue, the first step is to consult your camera's user guide. Confirm whether the memory card is compatible with your Canon model. If compatibility is not the issue, proceed to examine the physical state of the memory card.

In some cases, a simple cleaning of the card's terminals with a dry cloth or cotton swab might do the trick. Ensure the memory card is inserted correctly, without any slant. Sometimes, the Lock tab on the memory card might be in the lock position, preventing the camera from accessing it. Switching it to the unlock position and reinserting the card could resolve the problem.

If all else fails, the last resort is formatting the memory card. However, proceed with caution, as formatting erases all data on the card. Before formatting, back up the data to your computer. You can then format the card either through your camera or using specialized software like MiniTool Partition Wizard. The choice between these methods depends on the card's size, with MiniTool Partition Wizard being recommended for cards larger than 32GB.

Canon Err 03: Too Many Folders on the Card

Err 03 raises its head when there are too many folders and sub-folders on the memory card, confusing the camera's software. This, in turn, leads to the dreaded "memory card error Canon PowerShot." The solution here involves decluttering the memory card by either transferring excess folders to your computer or deleting them. However, it's essential to note that deleting files directly from the memory card within the camera can potentially shorten its lifespan.

An alternative solution is to back up the memory card and opt for formatting. Formatting can be done either through the camera or using software like MiniTool Partition Wizard, as mentioned earlier. Keeping the folders organized on your computer helps maintain a clean and functional memory card.

Canon Err 04: The Memory Card Is Full

As the saying goes, "A picture is worth a thousand words," but what happens when the memory card is full, and you can't capture that priceless moment? Err 04, the memory card full error, can be a showstopper. The solutions here involve freeing up space on the card.

Transferring pictures to your computer or deleting unnecessary files directly from the computer are two practical approaches. If the error persists, consider backing up the memory card and formatting it. Upgrading to a larger memory card is also a viable option if you frequently encounter the memory card full error.

Canon Err 10: File System Malfunction

Err 10 is a unique error that indicates a file system malfunction. Canon suggests a sequence of steps to address this error:

  • Turn off your camera.
  • Remove the battery.
  • Wait for a while.
  • Reinsert the battery.
  • Turn the camera back on.

If these steps do not resolve the issue, it's time to turn to MiniTool Partition Wizard. This versatile tool not only serves as a FAT32 formatter but also helps repair file system errors. The process involves removing the memory card, connecting it to your computer, launching MiniTool Partition Wizard, checking and fixing detected errors, and finally reinserting the card into the camera.

Canon Err 99: Shooting Is Not Possible

Err 99 is a generic error that can be related to the memory card, camera lens, or battery. The initial steps to troubleshoot involve turning off the camera, waiting for a minute, and then attempting to take a photo. If the error persists, the focus should shift to the memory card.

Reinserting the memory card squarely is the first test. If the error code reappears, it indicates potential issues with the original memory card. To confirm this, try using a different memory card. If the error vanishes with the new card, it suggests problems with the original card. In such cases, reformatting the card becomes a plausible solution.

Common Canon Memory Card Problems

Beyond the realm of specific error codes, Canon memory cards face general problems, such as inaccessible or lost photos and slow performance. These issues often arise from factors like nearly full memory cards or virus attacks.

Sharing Files on Memory Card Data Recovery

While the focus has primarily been on troubleshooting errors, it's crucial to touch upon secure file sharing and data recovery. Sharing files from your memory card demands a cautious approach. Before sharing, consider the potential risks and the importance of data recovery tools.

Data recovery tools, such as MyRecover, can play a vital role in ensuring the safety of your memories. Before delving into specifics about MyRecover, let's briefly discuss the importance of secure file sharing.

File sharing is an integral part of our digital lives, but when it comes to memory cards used in cameras, the stakes are higher. These cards often hold irreplaceable memories, making it essential to prioritize data safety. Whether it's transferring photos to a friend's device or sharing them on social media, understanding the nuances of secure file sharing becomes paramount.

Now, let's shift our focus to MyRecover, a powerful data recovery tool.

MyRecover: A Powerful Data Recovery Tool

MyRecover emerges as a beacon of hope in the realm of data recovery. Designed with simplicity and efficiency in mind, MyRecover caters to users ranging from beginners to seasoned professionals.

Key Features of MyRecover:

User-Friendly Interface: Navigating the complexities of data recovery is made simple with MyRecover's intuitive interface. The step-by-step process ensures that even beginners can recover lost data without a hitch.

Comprehensive Scanning: MyRecover employs advanced scanning algorithms to ensure a thorough search for lost files. Whether it's photos, videos, or documents, MyRecover leaves no stone unturned.

Selective Recovery: Users have the flexibility to choose specific files for recovery. This feature is especially handy when you're looking to retrieve only a handful of files from a large pool of data.

Versatile Compatibility: MyRecover supports various storage devices, including memory cards, hard drives, USB drives, and more. This versatility ensures that it's a one-stop solution for various data recovery needs.

Quick and Safe: Speed matters when it comes to data recovery. MyRecover prioritizes a quick turnaround without compromising the safety of your data. Your memories are precious, and MyRecover treats them with the utmost care.

In essence, MyRecover becomes your ally in times of accidental deletions, formatting mishaps, or any other scenario where data loss occurs. Its robust features make it a go-to choice for those looking to reclaim lost memories without the need for intricate technical know-how.

Here's a  simplified summary of the operating steps for MyRecover:

1. Download & Install: Get MyRecover from its official site and install it on your computer.

2. Launch the App: Open MyRecover once it's installed.

3. Select Drive: Choose the drive or memory card for recovery.

4. Start Scanning: Initiate the scanning process and wait for it to finish.

5. Initiate Recovery:  Click "Recover" to start the recovery process.


In the intricate world of Canon camera memory card errors, proactive troubleshooting is paramount. From understanding the nuances of error codes to exploring the capabilities of data recovery tools like MyRecover, this guide equips you to navigate the challenges seamlessly. Remember, every click is a moment frozen in time, and with the right knowledge, memory card errors can be a thing of the past. Keep clicking, keep capturing, and let your memories unfold without the shackles of errors.


1. How do I prevent Canon memory card errors during crucial moments?*

Proactively check compatibility, keep memory cards clean, and format them regularly to minimize errors.

2. Is MyRecover user-friendly for beginners in data recovery?

Yes, MyRecover's intuitive interface makes it beginner-friendly, guiding users through the data recovery process seamlessly.

3. Can Err 99 indicate issues beyond the memory card?

Yes, Err 99 might stem from camera lens or battery problems. If troubleshooting the memory card doesn't work, consider checking other components.

Penny · Editor
Penny works as an editor at AOMEI Technology, while she's a tester and editor for AOMEI Data Recovery Tools. She enjoys helping users with data recovery issues on Windows and iPhones using simple and practical solutions. Outside of work, she has a strong affection for pets, particularly giant pandas.