WeChat is one of the most popular chat apps today. Not only can you send text and voice messages to your friends, but you can also share videos, photos, songs, documents, and other files with others. WeChat makes communication so much easier! However, sometimes you may find that your WeChat cannot send files or pictures, for example, sending fails, it keeps loading in a loop, or it just freezes and doesn't move.
So, what's wrong with your WeChat? How can you fix this issue? This article will walk you through the possible causes and provide practical solutions to help you quickly restore the file sending function on WeChat.

Before troubleshooting, it's important to understand the possible causes. Here are some common reasons why WeChat can't send files:
* Unstable network connection (WiFi/mobile data issues).
* File size is too large or format is unsupported.
* Insufficient phone storage space.
* Abnormal WeChat cache or data corruption.
* Outdated WeChat version.
* App permissions not enabled (storage/file access permissions).
* Temporary WeChat server issues.
After understanding the causes, we can proceed with targeted fixes. The following methods are recommended to be tried in order, as most "WeChat cannot send files" issues can be resolved through these steps.
A weak or unstable network is one of the most common reasons for WeChat files not sending. If your connection is interrupted during upload, the file will not be sent successfully. You can check your network connection with the following steps:
Step 1. Switch between Wi-Fi and mobile data for testing.
Step 2. Open a browser and visit a webpage to confirm the network is working properly.
Step 3. Turn off any VPN or proxy tools (if applicable).
Step 4. Restart the router or turn on airplane mode, then turn it off again.

Sometimes the issue behind WeChat cannot send files is caused by temporary system glitches or background app conflicts. Restarting your device can clear memory and refresh system processes.
To restart the iPhone: Hold the "side" button and "volume" button until the slider appears. Slide to power off, then press the "side" button to turn it back on.

To restart the Android: Press and hold the "power" button until the power options appear. Then, tap "Restart" or "Reboot" (depending on your device) and wait for the phone to turn off and turn back on. If you don't see the restart option, you can select "Power off", wait for the phone to shut down, and then press the power button again to turn it back on.

Generally, files sent on WeChat must not exceed 25MB. If you want to send files larger than 25MB, you should try other methods. Here, we recommend using Weiyun, also developed by Tencent.
WeChat on Computer:
Step 1. Go to "https://www.weiyun.com/" to log in to the cloud service with your WeChat account by scanning the QR code.
Step 2. When the main interface of Weiyun pops up, you can click on the "+" button in blue and select the first option to upload a file from your computer.

Step 3. Choose the files you want to upload and click on the blue button on the pop-up window to start uploading.
Step 4. When the uploading process finishes, you can select the item you want to send and go to the top menu to click the share button.
Step 5. You should be popped up with a new window, from which you should click the blue button to copy the link.

Step 6. Go back to your WeChat, navigate to the chat you want to send files to, paste the link, and click on the Send button.
WeChat on Mobile Phone:
Step 1. Download the Weiyun App on your mobile phone. iPhone and Android phones are both supported.
Step 2. Go to the bottom menu to choose the "+" button.
Step 3. Select the document icon and choose the file to upload to your computer.

Step 4. Choose the files and click on the blue button to upload them to the cloud.
Step 5. After the above steps, you can go to the file and click "..". Then, choose to send to the WeChat conversation.
Over time, WeChat accumulates cache files such as images, videos, and temporary data. These files can become corrupted or excessively large, leading to issues like WeChat cannot send files. Clearing the cache helps refresh the app and improve performance without deleting your chat history.
Here is how to clear WeChat cache on iPhone/Android:
Step 1. Launch WeChat and tap the "Me" tab.
Step 2. Navigate to "Settings", then select "General", and open "Storage".
Step 3. Locate the "Cache" section, where its size is displayed.
Step 4. Tap "Clear", and confirm by choosing "OK" to remove the cache.

If your phone's storage is insufficient, WeChat may not be able to cache data properly when uploading files, which can cause sending to fail.
Go to "Settings" > "Storage" on your phone to check if the available space is low. Delete unnecessary photos, videos, or app cache, and make sure to keep at least 1 GB of free space available.
An outdated or corrupted version of WeChat can also cause WeChat cannot send files issues. Updating or reinstalling ensures you have the latest bug fixes and performance improvements.
Here is how to do it:
Step 1. Open the App Store or Google Play Store and check if an update for WeChat is available.
Step 2. If it's already up to date, uninstall the app and reinstall the latest version.
Step 3. Then sign back into your account and try sending the file again.

When you encounter the "unable to send file" issue on WeChat, it's often not caused by a problem with the app itself. Instead, it may result from insufficient storage space, disorganized file management, or transfer limitations. If you want to manage files on your iPhone more efficiently and avoid WeChat sending failures, a more professional solution is to use Coolmuster iOS Assistant.
This tool is specifically designed for iOS devices and helps you easily export, back up, and organize various types of data on your phone, including WeChat-related photos, videos, and documents.
Key features of Coolmuster iOS Assistant:
Here is how to use iOS Assistant to transfer WeChat photos from iPhone to computer:
01Download and install iOS Assistant on your PC or Mac, then open it.
02Use a USB cable to connect your iPhone to the computer. Tap "Trust" on your iPhone if prompted, then click "Continue" in the program to proceed. Once connected, the tool will automatically detect and scan your iPhone data.

03In the left panel, click "Photos" and browse through the albums to find your WeChat pictures. Preview the photos and select the ones you want to transfer, and then click the "Export" button, choose a destination folder on your computer, and start transferring.

Video Tutorial:
Note: If your WeChat photos are not visible in the Photos section, you can first save them from WeChat to your iPhone's camera roll, then follow the steps above to export them.
When you encounter the "WeChat cannot send files" issue, this article provides six methods to help you resolve it quickly. In most cases, these basic steps can restore normal file-sending functionality in WeChat.
However, if you frequently need to transfer large files or want to avoid such issues from recurring, it's worth considering a more professional tool to manage your phone data. For example, Coolmuster iOS Assistant can help you efficiently export, back up, and organize files on your iPhone, reducing reliance on WeChat for transfers and making file management more stable and convenient.
Related Articles:
[4 Methods] How to Save WeChat Voice Messages on iPhone?
Full Guide on How to Transfer WeChat History to New Phone