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Information about logging in or changing your registration details
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If fraudulent Hatena registrations are detected from your location, we may require some additional steps to ensure that the information you provide is valid. If creation of additional Hatena accounts is required at your location for some reason, please contact Hatena Customer Support by clicking on the support link at the bottom of this page and we will do our best to assist you. Please be sure to tell us the following information when you contact us:
- Your name
- The name of your organization
- Your reason for registering
If your support matter is urgent, or if you have encountered a serious bug, please contact us directly. Please include your name, email address and a description of the problem and send it us via our contact form. Our support staff will investigate your problem and reply to you by email.
We'll be able to help you better when reporting your problem if you can tell us as much as information as possible, such as the information below.
- The time and date that the problem occured
- The URL of the page where you experienced the problem
- The error message that was displayed
- Please tell us as much detail as possible about how and when the error occurred.