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henryb
henryb

Reputation: 23

.Net Framework 3.5 and .Net Framework 3.5 SP1 have same version number?

I have heard I can check my .Net Framework Version from HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5.

There are two entries SP and Version. .Net Framework 3.5 SP1 has value 1(true) for SP entry.

In this part, I have a question. .Net Framework 3.5 has same version number with .Net Framework 3.5 SP1 and there is only one difference of SP entry value?

For example, I know that version entry value is 3.5.30729.12345. However I don't know about SP entry value. In that case, can I convince version entry value indicates .Net Framework 3.5 SP1?

thanks.

Upvotes: 1

Views: 1071

Answers (1)

JosefZ
JosefZ

Reputation: 30113

How to determine which versions and service pack levels of the Microsoft .NET Framework are installed

Use the registry information below to determine which version(s) and service pack level(s) of the Microsoft .NET Framework are installed.

v3.5 Original Release

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5
Name: Install, Type: REG_DWORD, Data: 1
Name: SP     , Type: REG_DWORD, Data: 0

v3.5 Service Pack 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5
Name: Install, Type: REG_DWORD, Data: 1
Name: SP     , Type: REG_DWORD, Data: 1

Below in the same article, under Recommended Deployment Detection header:

To detect the existence of a specific .NET Framework version regardless of the Service Pack level, or to detect a service pack level or a later service pack level of the same .NET Framework version, use the registry information that is listed in the following table.

v3.5 Any Version

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5
Install = 1

v3.5 Service Pack 1 or Greater

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5
SP >= 1

Upvotes: 1

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