A nice collection of articles regarding hanging or unresponsive servers.
Very difficult to troubleshoot and to pinpoint the root cause. Most heard: users cannot connect anymore, Remote Desktop is not working anymore, remote control not possible, server sometimes doesn’t even respond to a PING request, switching off/on is the only way out.
- When a user logs off a Windows Server 2003 Service Pack 1 or Service Pack 2-based terminal server, the terminal server may stop responding for several seconds http://support.microsoft.com/kb/927182
- A Windows Server 2003-based computer stops responding when the registry is in heavy use http://support.microsoft.com/kb/935926
- XenApp Target Device Freeze and Gray Screen Issues
- Some data is corrupted when cached and noncached I/O operations occur by using the same NTFS file handle
- Sessions and/or servers freezing sometimes
http://blog.ressoftware.com/index.php/2009/12/15/sessions-andor-servers-freezing-sometimes/ (especially the SessionPoolSize and SessionViewSize part)
- A computer that is running Windows Server 2008 R2 or Windows 7 stops responding randomly http://support.microsoft.com/kb/2265716/
- Remote desktop sessions do not completely exit, and you cannot establish new remote desktop sessions to a computer that is running Windows Server 2008 R2
- A Windows Server 2003-based or Windows Server 2008-based terminal server stops accepting new connections, and existing connections stop responding http://support.microsoft.com/kb/956438
- A server that is running Windows Server 2003 Service Pack 2 restarts unexpectedly with various stop codes after you install hotfix 971280 or newer Windows Kernel Binaries http://support.microsoft.com/kb/978243
- Recommended Citrix and Microsoft Hotfixes for XenApp 6 and Windows Server 2008 R2 http://support.citrix.com/article/CTX129229