How to troubleshoot: Windows - Low On Registry Space : The system has reached the maximum size allowed for the system part of the registry. Additional storage requests will be ignored.
Windows Server 2003 RTM
Windows Server 2003 Service Pack 1
Windows Server 2003 Service Pack 2
In the System event log, you might notice the following information:
Type: Information
Date: MM/DD/YYYY
Time: HH:MM:SS
Event ID: 26
Source: Application Popup
User: N/A
Computer: <Computer Name>
Details:
Application popup: Windows - Low On Registry Space : The system has reached the maximum size allowed for
the system part of the registry.
Additional storage requests will be ignored.
The way that I would start troubleshooting is the following:
1) In Perfmon, you might want to do the following:
Add System > % Registry Quota In Use > __________
Check to see what the maximum value it is.
Add Memory > Pool Paged Bytes > ___________
Check to see what the maximum value it is.
2) Check the sizes of the registry hives in:
C:\windows\system32\config
Security ____ MB
Software ____ MB
System ____ MB
Default ____ MB
C:\Documents and Settings\
Default User ____ MB
LocalService ____ MB
NetworkService ____ MB
User Profiles # ____
Each individual User Profile sizes ____ MB (Sometimes the median and biggest size can be enough).
3) Please make sure that you don’t have the following registry key set:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control
RegistrySizeLimit
124594 Understanding and configuring Registry Size Limit (RSL)
https://support.microsoft.com/?id=124594
4) If you don’t have the registry key set, install the latest UPHClean in https://blogs.technet.com/uphclean/ .
i.e.
32-bit UPHClean v2.0 build 2.0.49.0 (beta)
After installing UPHClean, set the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UPHClean\Parameters
SHARING_VIOLATION_REMAP (dword) 1 (hex)
Stop and Restart the UPHClean Service.
5) If you still have problems, the information that you gathered in step 2 might guide you to an application or service or driver that is not unloading the registry keys.
Hopefully this will help you narrow down the cause of the warning.
References:
System Error Codes (500-999)
https://msdn.microsoft.com/en-us/library/ms681388(VS.85).aspx
2.2 Win32 Error Codes
https://msdn.microsoft.com/en-us/library/cc231199(PROT.10).aspx