
Email attachments are a convenient way to share files, documents, photos, and videos with others. However, there can be instances when email attachments fail to open or open improperly. For example, a user reported that their Word attachments in Outlook would not open, and they received an error message stating that the attachment could not be opened with Paint. Another user reported that their PDF attachments were trying to open with Paint instead of the default PDF viewer. In such cases, there are several troubleshooting steps that can be taken to resolve the issue and ensure that email attachments open with the correct programs.
| Characteristics | Values |
|---|---|
| Issue | Email attachments open with Paint instead of the intended program |
| Cause | Bad file association or problem with the program |
| Solution | Change file association in Windows settings |
| Details | Navigate to Control Panel -> Folder Options -> File Types |
| Alternative | Save the attachment to your computer, then right-click the file and choose "Open with" to select a different program |
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What You'll Learn

Check if the file type is supported on your device
If your email attachments are opening with Paint, one of the first things you should do is check if the file type is supported on your device. This could be due to a problem with the file association or the file format not being compatible with your computer.
First, check the file format. If the attachment is a PSD (Photoshop document) image file (.psd file extension), for example, and you don't have Adobe Photoshop or another compatible program, you won't be able to open it. In such cases, you can ask the sender to save and send the file in a different, more common format, such as JPEG (.jpg or .jpeg) or PNG (.png).
Additionally, ensure that your device has the necessary programs installed to open the attachment. For instance, while most modern web browsers include a PDF viewer, certain PDFs may require a full program to be edited or viewed. If you don't have the required program, you can request the sender to send the file in a different format or install a compatible program to open the attachment.
It's also important to consider the operating system being used. If the sender uses a Mac computer and you're using Windows, the files may not be saved in a Windows-compatible format, causing issues with opening them. Communicating your operating system to the sender can help ensure you receive compatible attachments.
Another potential issue could be symbols in the file name. Files with names containing symbols, such as a dollar sign ($) or a plus (+), may not open properly. In such cases, you can ask the sender to rename the file without symbols or save the file to your computer and remove the symbols before attempting to open it.
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Ensure the correct program is installed
If your email attachments are opening with Paint when they shouldn't, it's likely that your computer doesn't have the necessary program installed to recognise the file type. For example, if you're trying to open a PSD (Photoshop document) image file, and you don't have Adobe Photoshop or another program that supports it, the image cannot be opened.
In this case, you could ask the sender to save the file in a different, more common format such as JPEG or PNG file types. Once you've confirmed that you have the correct software to open the new file format, ask the sender to resend the attachment. If you regularly receive this type of file, consider installing the appropriate program or viewer so that others don't have to accommodate your software limitations.
If you're trying to open a PDF document, most modern web browsers include a PDF viewer, but some PDFs require a full program so you can make changes to them. Instead of trying to open the attachment directly from your email client, save the attachment to your computer, then right-click the file, and under 'Open with', choose a different program to open it. If this works and you want the program to always open this type of file, check the box 'Always use this app to open' and click 'OK'.
If the issue is with Outlook attachments, this is likely a Windows setting. Go to Control Panel -> Folder Options -> tab File Types to change the setting so that attachments will open with the correct program.
If the file format is supported and you have the correct program installed, but the attachment still won't open, the file association may be incorrect. Check the file association and ensure it is associated with the correct program.
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Check for symbols in the file name
When you receive an email with an attachment, it is always a good idea to check the file name for any unusual symbols. Symbols in the file name can sometimes prevent you from opening the attachment. For example, if the file name contains symbols such as a dollar sign ($) or a plus (+), it is very likely that the attachment will not open.
If you are unable to open an email attachment, check the file name for any such symbols. If there are symbols in the file name, ask the sender to remove them and re-send the attachment. If you have the permission to edit the file name, you can also try removing the symbols yourself and then opening the file.
It is also a good idea to check the file name for any unusual characters or spelling errors. Sometimes, the sender might accidentally include unusual characters in the file name, which can prevent the attachment from opening properly. For example, if the file name contains a typographical error or an unusual character, it might be preventing you from opening the attachment.
In addition to checking the file name, you should also check the file format. Make sure that the file format is supported by your computer or device. If the file format is not supported, you might need to download a compatible program or application to open it. You can also ask the sender to save the file in a different, more common format that is compatible with your system.
Finally, if you are still unable to open the attachment, there might be another issue causing the problem. For example, the file could be corrupted, or your antivirus software might be blocking it. Try temporarily disabling your antivirus software and see if that allows you to open the attachment. However, always exercise caution when dealing with email attachments, especially if they are from unknown senders, as they can potentially contain malware or viruses.
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Check if the file is corrupted
If your email attachments are opening with Paint, it could be that the files are corrupted. Here are some ways to check if that's the case:
Firstly, you can try opening the file. If it doesn't open or only partially opens, that's a good indicator that it might be corrupted. For example, if it's an audio file, the audio might not play at all or will only play partially.
Another way to check is to use the System File Checker tool, which can help repair missing or corrupted system files. To do this, open an elevated command prompt by typing "cmd" in the search box, then right-clicking on Command Prompt and selecting "Run as administrator." Once you've done this, type the following command and press Enter: sfc /scannow. This will scan all protected system files and replace any corrupted files with cached copies. The scan results will be shown once the process is finished.
Additionally, you can try scanning the file to see if any corruption has occurred. One way to do this is by using the checksum of the file, which is like a mathematical representation of computer data. You can compare the checksum of the file you have with a validation checksum, and if they're different, your file is corrupted.
If you're using Windows, you can also try taking administrative ownership of the corrupted system file by typing the following command in the elevated command prompt and pressing Enter: takeown /f
It's important to handle email attachments with caution, especially if they're from unknown senders, as they may contain malware or viruses. Always check the file type and extension before opening, as some types, such as PDFs, are generally safer.
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Check your antivirus software
If your email attachments are opening with Paint instead of the intended program, one possible reason could be that your antivirus software is interfering with the attachments. Antivirus programs are designed to protect your computer from malicious software, but sometimes they can mistakenly flag safe files as potential threats.
To check if your antivirus software is causing the issue, you can try temporarily disabling it. However, before you do so, ensure that you are not putting your device at risk by temporarily disabling the software. Once disabled, try opening the email attachment again. If it opens successfully, you know that your antivirus software was the issue.
In this case, you can try adding an exception for the specific attachment or email sender in your antivirus program. This will allow you to open the attachment without disabling the antivirus completely. Each antivirus program has different steps to add exceptions, so be sure to consult the documentation or support resources for your specific antivirus software to understand their process.
Additionally, consider checking if your antivirus software is up to date. Sometimes, outdated antivirus programs may not recognize certain file types or may have compatibility issues with your email client. Updating to the latest version can resolve such problems and ensure that your device has the best possible protection.
If disabling or updating your antivirus software does not resolve the issue, there may be another reason why your email attachments are opening with Paint. In this case, it is recommended to explore other troubleshooting steps or seek further technical assistance.
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Frequently asked questions
This is a Windows setting and not an Outlook setting. To change this, go to Control Panel -> Folder Options -> tab File Types.
This may be due to a problem with the file association. Check that the file is associated with a program that can open it. If not, right-click the file, choose 'Open with', and select a different program.
There could be several reasons for this. The file may be missing or not available, or there may be an issue with the file format, file association, or a problem with the program. The file name may contain symbols, or there could be an issue with your antivirus program.
Ask the sender to save and send the file in a different, more common format. Alternatively, install the appropriate program or viewer.











































