<p>On my Vista machine I cannot install the .Net framework 3.5 SP1. Setup ends few moments after ending the download of the required files, stating in the log that: </p>

<pre><code>[08/26/08,09:46:11] Microsoft .NET Framework 2.0SP1 (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (CBS). MSI returned error code 1
[08/26/08,09:46:13] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (CBS) is not installed.
</code></pre>

<p>First thing I did was trying to install 2.0 SP1, but this time setup states that the "product is not supported on Vista system". Uhm.</p>

<p>The real big problem is that this setup fails also when it is called by the Visual Studio 2008 SP1.</p>

<p>Now, I searched the net for this, but I'm not finding a real solution... Any idea / hint? Did anybody have problems during SP1 install?</p>

<p>Thanks</p>

[{'answer_id': 27677, 'author': 'Magnus Westin', 'author_id': 2957, 'author_profile': 'https://Stackoverflow.com/users/2957', 'pm_score': 2, 'selected': True, 'text': '<p><a href="http://blogs.msdn.com/astebner/archive/2007/08/24/4548657.aspx" rel="nofollow noreferrer">Here is an article describing what might be your problem.</a></p>\n'}, {'answer_id': 27678, 'author': 'Biri', 'author_id': 968, 'author_profile': 'https://Stackoverflow.com/users/968', 'pm_score': 0, 'selected': False, 'text': '<p>I also experienced it on my XP.</p>\n\n<p>I searched for it, and the result was that some kind of beta .NET remained on my PC.</p>\n\n<p>There is a <a href="http://blogs.msdn.com/astebner/archive/2005/04/08/406671.aspx" rel="nofollow noreferrer">tool to remove all</a> .NET framework from the system. I run it and after it I successfully installed 3.5 SP1.</p>\n'}, {'answer_id': 463982, 'author': 'LaserJesus', 'author_id': 45207, 'author_profile': 'https://Stackoverflow.com/users/45207', 'pm_score': 0, 'selected': False, 'text': "<p>I had a similar error, though it listed error code 1060 rather than 1. I read elsewhere that having IIS turned off may be the issue, but this didn't seem to help. Then I read that windows update needed to be turned on. Mine was turned on, but when I tired to run it, it failed. I ran: regsvr32 wuaueng.dll which seemed to fix windows update. After windows update was working again I was able to install .Net 3.5 Sp 1. Note that I didn't actually run windows update, I just made sure that it could run.</p>\n"}]
['https://Stackoverflow.com/questions/27670', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/1178/']