Microsoft Windows Error Code 0xC0000063: How to Fix It

Easy 30-60 minutes Medium Severity Verified June 2026
Summarize with ChatGPTSummarize with ClaudeSummarize with Perplexity Add as Preferred Source on Google
Error Code
0xC0000063
Brand
Microsoft Windows
Product Type
operating_system
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
30-60 minutes
Error code 0xC0000063, or STATUS_INSTANCE_NOT_AVAILABLE, indicates that a named pipe instance is not available when an application tries to use it. This usually happens when a service or program tries to connect to a pipe that has no active instances or is being overwhelmed. You can resolve it by restarting services, checking for conflicts, or repairing system files.
Ad

How to Fix Error Code 0xC0000063

  1. Restart the Affected Service or Application

  2. Check for Named Pipe Configuration Issues

  3. Run System File Checker (SFC)

    Do not close the Command Prompt during the scan.

  4. Perform a Clean Boot

    This disables all non-Microsoft services temporarily.

  5. Update or Reinstall the Affected Software

    Back up any important data related to the program first.
Ad

When to Call a Professional

If the error persists after trying all steps, or if you are unable to identify the affected service or application, consider contacting a professional IT technician or Microsoft Support.

Frequently Asked Questions

What does error 0xC0000063 mean?
It means a named pipe instance is not available, usually because the server application is not running or there are too many connections.
Can this error be caused by malware?
While unlikely, malware can disrupt services. Run a full antivirus scan to rule it out.
Will I lose data with this error?
Typically no, but save your work and close programs if the error appears frequently.
Why does error 0xC0000063 appear when I start a game?
Some games use named pipes for multiplayer or anti-cheat. Update the game and your graphics drivers, and verify game files.
Is this error specific to Windows?
Yes, this error code is specific to Windows operating systems.

Related Error Codes