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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

  3. Error correction code - Wikipedia

    en.wikipedia.org/wiki/Error_correction_code

    Low-density parity-check (LDPC) codes are a class of highly efficient linear block codes made from many single parity check (SPC) codes. They can provide performance very close to the channel capacity (the theoretical maximum) using an iterated soft-decision decoding approach, at linear time complexity in terms of their block length.

  4. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    1xx—Provisional Responses. 100 Trying. Extended search being performed may take a significant time so a forking proxy must send a 100 Trying response. [ 1]: §21.1.1. 180 Ringing. Destination user agent received INVITE, and is alerting user of call. [ 1]: §21.1.2. 181 Call is Being Forwarded.

  5. Crash (computing) - Wikipedia

    en.wikipedia.org/wiki/Crash_(computing)

    In computing, a crash, or system crash, occurs when a computer program such as a software application or an operating system stops functioning properly and exits. On some operating systems or individual applications, a crash reporting service will report the crash and any details relating to it (or give the user the option to do so), usually to ...

  6. Remote Desktop Services - Wikipedia

    en.wikipedia.org/wiki/Remote_Desktop_Services

    Remote Desktop Services. Remote Desktop Services ( RDS ), known as Terminal Services in Windows Server 2008 and earlier, [ 1] is one of the components of Microsoft Windows that allow a user to initiate and control an interactive session [ 2] on a remote computer or virtual machine over a network connection. RDS was first released in 1998 as ...

  7. Downtime - Wikipedia

    en.wikipedia.org/wiki/Downtime

    A software bug was found. [3] AT&T lost its Frame Relay network for 26 hours on April 13, 1998. [4] This affected many thousands of customers, and bank transactions were one casualty. AT&T failed to meet the service level agreement on their contracts with customers and had to refund [5] 6,600 customer accounts, costing millions of dollars.

  8. HTTP 403 - Wikipedia

    en.wikipedia.org/wiki/HTTP_403

    If the user does not provide valid credentials or if the authentication fails, a 403 status code is returned. IP restrictions: The server may also restrict access to specific IP addresses or IP ranges. If the user's IP address is not included in the list of permitted addresses, a 403 status code is returned.

  9. CrowdStrike and Microsoft: What we know about global IT outage

    www.aol.com/news/crowdstrike-microsoft-know...

    According to CrowdStrike boss George Kurtz, the issues are only impacting Windows PCs and no other operating systems, and were caused by a defect in a recent update. "The issue has been identified ...