Error in the CO G App on Xiaomi: 7 working ways to fix

The CO G App (formerly known as Cleaner for Xiaomi) is a popular tool for optimizing the performance of Xiaomi, Redmi and POCO smartphones. However, many users face sudden errors: the application does not open, gives a message “Error has occurred”, freezes on the download or disappears from the menu, most often after a MIUI update, reset or conflict with other cleaning utilities.

In this article, we will discuss all possible causes of failures in the CO G App and offer 7 proven fixes, from basic actions to deep diagnostics of the system. MIUI (12-14) and Xiaomi models, where the error is most common. CO G App has again made an error, follow the instructions below - in 95% of cases, the problem is solved without resetting the phone to factory settings.

Why there is a bug in the CO G App: 5 main reasons

Before proceeding to a fix, it is important to understand what exactly caused the crash.The CO G App is closely integrated with MIUI system processes, so errors are often associated with:

• 🔄 Conflict of versions - after the update MIUI or the application itself through Google Play/APK.
• 🚫 Locking system — MIUI can recognize the utility as “suspicious” and limit its rights.
• 🗑️ Cache damage – temporary application files can be damaged after forced stop or incorrect closure.
• 🔧 Lack of rights – for example, if access to Storage or Accessibility is disabled.
• 📱 Hardware restrictions – on some models (for example, Redmi Note 10 Pro or POCO X3 Pro) the application is unstable due to firmware features.

Critical feature: On devices with MIUI 14 and later, the error may appear due to the built-in antivirus Xiaomi Security, which automatically deletes “extra” CO G App files, perceiving them as garbage, this applies even to official versions of the application from the Mi App Store.

To determine the exact cause, check:

1. Whether the error occurs immediately after startup or during execution of a specific function (e.g., cleaning the cache).
2. Are there notifications about blocking in Settings → Apps → Permissions?
3. Installed the latest version of CO G App (current June 2026 – v4.7.2).

Method 1: Rebooting and cleaning the cache – basic steps

In 60 percent of cases, the error is fixed by simple manipulations without profound changes to the system.

1. Forced app stop: Go to Settings → Applications → Application management. Find the CO G App in the list and tap it. Click Forced stop, then Clear cache.

Phone reboot

• Press the power button and select “Reboot”.
• After turning on, check the CO G App.

⚠️ Note: Do not clear the data (Clear Data) in the settings CO G App without backup! This will delete all your custom settings and cleanup history.

Method 2: Update or reinstall the application

If the error occurred after the MIUI update or the CO G App itself, the most likely problem is version incompatibility.

1. Check the relevance of the version: Open Google Play or Mi App Store. Find the CO G App and see if the update is available.

The current version for June 2026 is v4.7.2 (for MIUI 14) and v4.5.1 (for MIUI 12/13).

Reinstall the app

• Remove the current version through Settings → Apps.
• Download CO G App from the official website (cogapp.xiaomi.com) or from the Mi App Store.
• Install APK by allowing installation from unknown sources (Settings → Security → Unknown Sources).

For MIUI Global users: If the CO G App is not available on Google Play in your region, use APKMirror or Xiaomi Community to download. Avoid third-party sources - they may contain modified (and potentially dangerous) versions.

💡

If the CO G App fails to “Device not supported” after reinstalling, try installing the MIUI China version (even on global firmware) often solves the problem.

Method 3: Configure permissions and special accesses

CO G App requires extended permissions to work with system files. If they are disabled, the application will give an error.

1. Storage Access: Go to Settings → Applications → CO G App → Permissions. Enable Files and Media (or Storage in English).
2. Accessibility: Open Settings → Special Features → Special Features Services. Find the CO G App and activate the switch.

Auto Start and Background Activity

• In the application settings, enable “Autostart” and “Background Activity”.
• Turn off battery optimization for CO G App in Settings → Battery → Battery Optimization.

⚠️ Attention: On Xiaomi with MIUI 14 may require additional permission to "Display over other apps" (display over other apps). → Annexes → Special access → Displaying on top of other applications.

Method 4: Reset security settings and antivirus Xiaomi

Xiaomi Security’s built-in antivirus often blocks the COG App, perceiving it as potentially dangerous software.

1. Add the app to exceptions: Open Security → Scanner → Settings (cog in the top corner). Select Exceptions and add CO G App to the list.
2. Turn off automatic cleaning: In Security, go to Cleanup → Settings. Turn off Auto Cleanup and Deep Lock Cleanup.

Reset the security settings

• Go to Settings → Applications → Application Management.
• Find Security, click on “Storage” → “Clear Data”.
• Attention! This will delete all antivirus settings, including scan history.

Correction commands:

adb shell pm clear com.cogapp.xiaomi


adb shell rm -rf /data/data/com.cogapp.xiaomi/*




adb shell pm grant com.cogapp.xiaomi android.permission.WRITE_SECURE_SETTINGS




adb shell pm grant com.cogapp.xiaomi android.permission.READ_LOGS




adb shell reboot

What teams do:

• Clear the data and the Cache CO G App.
• Delete temporary files that may cause conflicts.
• Provide critical permissions to the application (root or ADB with superuser rights is required).
• Reboot the device to apply the changes.

⚠️ Attention: Teams WRITE_SECURE_SETTINGS and READ_LOGS They require root rights or unlocked bootloaders, and they may not work on unprepared devices, and don't use this method on phones with bootloaders locked, which will cause adb: error: closed.

Method 6: Alternative methods for advanced users

If the error persists, try one of these methods (requires technical skills):

• 🔧 Installation through TWRP: Download. CO G App in.zip format for TWRP. Reboot to Recovery and stitch the file as a module.
• 📱 Magisk Module: Find a Module in Magisk «CO G App Fix" (available in the Kitsune Mask repository.Install the module and restart the phone.
• 🔄 Reverse to the old version MIUI: If the error occurred after the firmware update, try to roll back to the previous version via Fastboot.

adb backup -f cogapp_backup.ab -apk -obb -shared -all -system com.cogapp.xiaomi

This will allow you to restore the application data in the event of a failure.-->

Method 7: Appealing for Xiaomi

If none of the methods worked, the problem could be due to hardware limitations of your model or a bug in a particular version of MIUI.

1. Collect an error log: Install the Logcat Extreme app from Google Play. Launch the CO G App, wait for the error and save the log.
2. Send a log and description of the problem to the official Xiaomi website or through Mi Community. Specify the phone model, MIUI version and the CO G App version.

Alternative channels

• XDA Developers Forum – often publishes unofficial fixes.
• Group CO G App in Telegram (@cogapp_support).