Fix AOL Mail Error Code 521 via AOL Email Support Phone Number

AOL is one of an oldest email service platform that present in the sphere of digital marketing & content sharing. The idea of using internet network to connect with the acquaintance, friends, and family has originated from themselves. AOL services are a free-web based email service that offers numerous features such as instant messaging, video chat, etc. This online service becomes so popular that it acquires user base of millions in the United States & Canada. But woefully, these online email services started face a lot of tech error. One of a critical error from them is AOL Error Code 521 that can only be resolved by authorized team of techies at AOL Email Support Phone Number. However, AOL customers can also use our manual steps to fix this error code. In this technical blog, we will let our readers know about the manual troubleshooting ways along with its causes.

Fix AOL Mail Error Code 521 via AOL Email Support Phone Number

Causes behind AOL Error 521

Here are some of the potential reasons that may cause the AOL error code 521: -

1. Poor/lousy internet connection.

2. When the mail host cannot accept the incoming emails.

3. Incorrectly configured email server.

4. Outdated windows, browser, and AOL version.

5. Partially installed AOL.

6. Interruption in AOL installation.

7. Due to malware or virus attack AOL program files are infected.

Note: Connect with the AOL Contact Number for specialized assistance from


Follow the methods mentioned below to troubleshoot the AOL mail error code 521: -

Method 1: Uninstall the AOL and delete all the files/folders/programs associated with it from the system. Later, restart the computer and open the browser to go to AOL official homepage. Re-install the AOL from there and sign in the AOL mail account. Finally, check if the email error still persists or not…! If it still exists, pursue with the next method.

Method 2: Perform full malware & virus scan on the computer to eradicate all the gibberish & harmful elements. This will enhance the protection of the AOL program as well as computer. Also, confirm that the system security software (antivirus software) updated to the latest released version for optimum level protection.

Method 3: Use ‘Disk Cleanup’ utility to eliminate all the temporary & junk files/folders that are unwanted. This will help to boost the system performance.

Method 4: Remove all the corrupt windows registries from the system associated with the AOL program. This act can resolve the AOL issue swiftly without much stress.

If AOL users need quick & smart professional help from trained AOL technicians – we suggest them to dial the AOL Email Support Phone Number. They can troubleshoot any AOL problem whether it’s related to update, upgrade, installation, or any error code. AOL customers/clients can rely on them blindly as their customer satisfaction rate is 100% till so far.

Read More: Fix AOL Error AC-3101 via AOL Customer Support Phone Number

Last updated:8/1/2019 2:58:06 AM


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