LKBEN10793: Which reg keys are shared for 32 and 64 bit on a windows 64-bit system

Symptom

There are a lot of registry keys shared for 32 and 64 bit programs. This is a list of them

Cause

This is by design

Solution

On windows 64-bit there must be keys in the registry which are shared. Here are keys under HKEY_LOCAL_MACHINE\SOFTWARE that are shared by

both 32-bit and 64-bit applications. These keys will not be reflected, and 32-bit registry calls will not be redirected.

Only one physical copy of the key is mapped into each logical view of the registry.

The following list identifies the shared keys:

- HKEY_LOCAL_MACHINE\SOFTWARE\Classes\HCP
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\Calais\Current
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\Calais\Readers
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\Services
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\CTF\SystemShared
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\CTF\TIP
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DFS
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Driver Signing
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EnterpriseCertificates
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSMQ
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Non-Driver Signing
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RAS
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Software\Microsoft\Shared Tools\MSInfo
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\TermServLicensing
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Transaction Server
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontDpi
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontMapper
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkCards
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Ports
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Print
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Control Panel\Cursors\Schemes
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OC Manager
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Telephony\Locations
- HKEY_LOCAL_MACHINE\SOFTWARE\Policies

Disclaimer:

About the Author

Author: Wim Peeters - Keskon GmbH & Co. KG

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience, including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform.