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        Windows NT Registry Size Limit (RSL)

Section(s): Registry
Published on Apr 20, 2004.
Last Modified on Apr 20, 2004.
Last Modified by Wayne Maples.
Rated 1 out of 5 based on 1 votes.

The maximum size of Windows NT and Windows 2000 registry is limited by 25% of the paged pool size, by default. It can be set as high as 80% of the paged pool size (not recommended). The maximum paged pool size is:

OS version	Max Paged Pool Size	25% Paged Pool Size	80% Paged Pool Size
Windows 2000	370MB	93MB	296MB
Windows NT4	192MB	48MB	154MB
Windows NT4 Terminal Server	192MB	48MB	154MB
Windows NT3.5	128MB	32MB	103MB
Windows NT3.1	32MB	8MB	27MB

Except for certain very large enterprise domain controllers, this key does not need to be changed. The registry setting for Windows NT / Windows 2000:

Hive: HKEY_LOCAL_MACHINE
Key: SYSTEM\CurrentControlSet\Control
Name: RegistrySizeLimit
Type: REG_DWORD
Value: 0 25% of paged pool size (default)
Value: 4-0xFFFFFFFE Number of megabytes allocated
Value: 0xFFFFFFFF 80% of paged pool size