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  2. Downtime - Wikipedia

    en.wikipedia.org/wiki/Downtime

    In computing and telecommunications, downtime (also (system) outage or (system) drought colloquially) is a period when a system is unavailable. The unavailability is the proportion of a time-span that a system is unavailable or offline .

  3. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The server cannot handle the request (because it is overloaded or down for maintenance). Generally, this is a temporary state. [26] 504 Gateway Timeout The server was acting as a gateway or proxy and did not receive a timely response from the upstream server. 505 HTTP Version Not Supported The server does not support the HTTP version used in ...

  4. Notification system - Wikipedia

    en.wikipedia.org/wiki/Notification_system

    Notifications show activity that relate to an event, account, or person. A push notification is a message that appears on a mobile device such as a text, sports score, limited-time deal, or an e-mail announcing when a computer network will be down for a scheduled maintenance. Notifications are sent from app publishers at any time, in an effort ...

  5. Fix problems sending AOL Mail - AOL Help

    help.aol.com/articles/aol-mail-troubleshooting

    If you have any combination of "AOL" in your display name, the message won't go through. It is especially important to check your Mail settings for this if your account has been recently compromised, as hackers will often change your name to make it harder for you to use your account normally even after it's secured. Clear your browser's cache

  6. FarmVille billing system down for maintenance - AOL

    www.aol.com/news/2011-02-23-farmville-billing...

    For premium support please call: 800-290-4726 more ways to reach us

  7. High availability - Wikipedia

    en.wikipedia.org/wiki/High_availability

    For example, a system can be "up" with its services not "available" in the case of a network outage. Or a system undergoing software maintenance can be "available" to be worked on by a system administrator, but its services do not appear "up" to the end user or customer. The subject of the terms is thus important here: whether the focus of a ...

  8. Troubleshoot AOL Calendar problems

    help.aol.com/articles/aol-calendar-troubleshooting

    Click the Drop-down icon next to the calendar's current color. 6. Select the color blue from available options. 7. Click Save. Make sure the calendar wasn't edited.

  9. Mean down time - Wikipedia

    en.wikipedia.org/wiki/Mean_down_time

    In organizational management, mean down time (MDT) is the average time that a system is non-operational. This includes all downtime associated with repair , corrective and preventive maintenance , self-imposed downtime , and any logistics or administrative delays.