Explanation of Issue:

When Microsoft AntiSpyware? Beta 1 (version 1.0.701) is installed, it creates a number of registry keys under HKEY_CLASSES_ROOT. The permissions on these keys allow ONLY the user who installed the program to access them, rendering the program inaccessible to other users, regardless of access level (even Administrators). When a different user logs on, they will recieve an "Unexpected Error; quitting" messagebox during login.

Additionally, if the program is uninstalled by a DIFFERENT user than the one who initially installed the program - OR - if the program is re-installed by a different user than the initial installer, the user will recieve an "Error 1904.Module C:\Program Files\Microsoft Antispyware\XXXXXXXX.dll failed to (un)register. HRESULT -2147220473" during the install.

Workaround:

Windows XP (Home/Pro) Users:

1. Log on as a user who has full Microsoft AntiSpyware? functionality (preferably with Administrator access).

2. Copy the codeblock below into a file named "MSASfix.txt" 

\registry\machine\software\classes\gcAntiSpywareLibrary.ActiveXObject 7
\registry\machine\software\classes\gcAntiSpywareLibrary.ActiveXObject\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.ActiveXObjects 7
\registry\machine\software\classes\gcAntiSpywareLibrary.ActiveXObjects\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.CLSID 7
\registry\machine\software\classes\gcAntiSpywareLibrary.CLSID\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.FileObject 7
\registry\machine\software\classes\gcAntiSpywareLibrary.FileObject\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.FileQuery 7
\registry\machine\software\classes\gcAntiSpywareLibrary.FileQuery\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.LSPObject 7
\registry\machine\software\classes\gcAntiSpywareLibrary.LSPObject\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.LSPObjects 7
\registry\machine\software\classes\gcAntiSpywareLibrary.LSPObjects\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.Manager 7
\registry\machine\software\classes\gcAntiSpywareLibrary.Manager\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.System 7
\registry\machine\software\classes\gcAntiSpywareLibrary.System\Clsid 7
\registry\machine\software\classes\gcAntiSpywareLibrary.SystemFeedback 7
\registry\machine\software\classes\gcAntiSpywareLibrary.SystemFeedback\Clsid 7
\registry\machine\software\classes\gcasDtServ.Agent 7
\registry\machine\software\classes\gcasDtServ.Agent\Clsid 7
\registry\machine\software\classes\gcasDtServ.AgentDataStore 7
\registry\machine\software\classes\gcasDtServ.AgentDataStore\Clsid 7
\registry\machine\software\classes\gcasDtServ.Agents 7
\registry\machine\software\classes\gcasDtServ.Agents\Clsid 7
\registry\machine\software\classes\gcasDtServ.Common 7
\registry\machine\software\classes\gcasDtServ.Common\Clsid 7
\registry\machine\software\classes\gcasDtServ.DataStore 7
\registry\machine\software\classes\gcasDtServ.DataStore\Clsid 7
\registry\machine\software\classes\gcasDtServ.EventObject 7
\registry\machine\software\classes\gcasDtServ.EventObject\Clsid 7
\registry\machine\software\classes\gcasDtServ.Events 7
\registry\machine\software\classes\gcasDtServ.Events\Clsid 7
\registry\machine\software\classes\gcasDtServ.Explorer 7
\registry\machine\software\classes\gcasDtServ.Explorer\Clsid 7
\registry\machine\software\classes\gcasDtServ.Explorers 7
\registry\machine\software\classes\gcasDtServ.Explorers\Clsid 7
\registry\machine\software\classes\gcasDtServ.FriendlyFiles 7
\registry\machine\software\classes\gcasDtServ.FriendlyFiles\Clsid 7
\registry\machine\software\classes\gcasDtServ.Inoculation 7
\registry\machine\software\classes\gcasDtServ.Inoculation\Clsid 7
\registry\machine\software\classes\gcasDtServ.Inoculations 7
\registry\machine\software\classes\gcasDtServ.Inoculations\Clsid 7
\registry\machine\software\classes\gcasDtServ.Manager 7
\registry\machine\software\classes\gcasDtServ.Manager\Clsid 7
\registry\machine\software\classes\gcasDtServ.Quarantine 7
\registry\machine\software\classes\gcasDtServ.Quarantine\Clsid 7
\registry\machine\software\classes\gcasDtServ.QuarantineContainer 7
\registry\machine\software\classes\gcasDtServ.QuarantineContainer\Clsid 7
\registry\machine\software\classes\gcasDtServ.QuarantineItem 7
\registry\machine\software\classes\gcasDtServ.QuarantineItem\Clsid 7
\registry\machine\software\classes\gcasDtServ.ResourceStore 7
\registry\machine\software\classes\gcasDtServ.ResourceStore\Clsid 7
\registry\machine\software\classes\gcasDtServ.Schedule 7
\registry\machine\software\classes\gcasDtServ.Schedule\Clsid 7
\registry\machine\software\classes\gcasDtServ.ScheduleScans 7
\registry\machine\software\classes\gcasDtServ.ScheduleScans\Clsid 7
\registry\machine\software\classes\gcasDtServ.Session 7
\registry\machine\software\classes\gcasDtServ.Session\Clsid 7
\registry\machine\software\classes\gcasDtServ.ThreatData 7
\registry\machine\software\classes\gcasDtServ.ThreatData\Clsid 7
\registry\machine\software\classes\gcasDtServ.UpdateSchedule 7
\registry\machine\software\classes\gcasDtServ.UpdateSchedule\Clsid 7
\registry\machine\software\classes\gcASPrivacyLib.Cleaner 7
\registry\machine\software\classes\gcASPrivacyLib.Cleaner\Clsid 7
\registry\machine\software\classes\gcASPrivacyLib.FileShredder 7
\registry\machine\software\classes\gcASPrivacyLib.FileShredder\Clsid 7
\registry\machine\software\classes\gcASPrivacyLib.TracksEraser 7
\registry\machine\software\classes\gcASPrivacyLib.TracksEraser\Clsid 7
\registry\machine\software\classes\gcASSoapLib.Registration 7
\registry\machine\software\classes\gcASSoapLib.Registration\Clsid 7
\registry\machine\software\classes\gcASSoapLib.Reports 7
\registry\machine\software\classes\gcASSoapLib.Reports\Clsid 7
\registry\machine\software\classes\gcASSoapLib.SoapClient 7
\registry\machine\software\classes\gcASSoapLib.SoapClient\Clsid 7
\registry\machine\software\classes\gcASSoapLib.Updates 7
\registry\machine\software\classes\gcASSoapLib.Updates\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Cleaner 7
\registry\machine\software\classes\gcASThreatAudit.Cleaner\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.CleanerCallback 7
\registry\machine\software\classes\gcASThreatAudit.CleanerCallback\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.clsFolderPaths 7
\registry\machine\software\classes\gcASThreatAudit.clsFolderPaths\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.DetectedThreat 7
\registry\machine\software\classes\gcASThreatAudit.DetectedThreat\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.IgnoredThreats 7
\registry\machine\software\classes\gcASThreatAudit.IgnoredThreats\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Info 7
\registry\machine\software\classes\gcASThreatAudit.Info\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Manager 7
\registry\machine\software\classes\gcASThreatAudit.Manager\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationCookie 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationCookie\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationFile 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationFile\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationFolder 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationFolder\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationRegKey 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationRegKey\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationSpecial 7
\registry\machine\software\classes\gcASThreatAudit.QThreatLocationSpecial\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Quarantine 7
\registry\machine\software\classes\gcASThreatAudit.Quarantine\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.QuarantineThreat 7
\registry\machine\software\classes\gcASThreatAudit.QuarantineThreat\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Scan 7
\registry\machine\software\classes\gcASThreatAudit.Scan\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ScanHistory 7
\registry\machine\software\classes\gcASThreatAudit.ScanHistory\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ScanHistoryDetail 7
\registry\machine\software\classes\gcASThreatAudit.ScanHistoryDetail\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Scanner 7
\registry\machine\software\classes\gcASThreatAudit.Scanner\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ScannerCallback 7
\registry\machine\software\classes\gcASThreatAudit.ScannerCallback\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ScannerSingle 7
\registry\machine\software\classes\gcASThreatAudit.ScannerSingle\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Settings 7
\registry\machine\software\classes\gcASThreatAudit.Settings\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Threat 7
\registry\machine\software\classes\gcASThreatAudit.Threat\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLite 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLite\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationCookie 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationCookie\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationCustom 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationCustom\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationFile 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationFile\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationFolder 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationFolder\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationRegKey 7
\registry\machine\software\classes\gcASThreatAudit.ThreatLocationRegKey\Clsid 7
\registry\machine\software\classes\gcASThreatAudit.Threats 7
\registry\machine\software\classes\gcASThreatAudit.Threats\Clsid 7
\registry\machine\software\classes\GCCollectionLib.GCArray 7
\registry\machine\software\classes\GCCollectionLib.GCArray\CLSID 7
\registry\machine\software\classes\GCCollectionLib.GCArray\CurVer 7
\registry\machine\software\classes\GCCollectionLib.GCArray.1 7
\registry\machine\software\classes\GCCollectionLib.GCArray.1\CLSID 7
\registry\machine\software\classes\GCCollectionLib.GCCollection 7
\registry\machine\software\classes\GCCollectionLib.GCCollection\CLSID 7
\registry\machine\software\classes\GCCollectionLib.GCCollection\CurVer 7
\registry\machine\software\classes\GCCollectionLib.GCCollection.1 7
\registry\machine\software\classes\GCCollectionLib.GCCollection.1\CLSID 7
\registry\machine\software\classes\GCCollectionLib.GCCollectionGlobal 7
\registry\machine\software\classes\GCCollectionLib.GCCollectionGlobal\CLSID 7
\registry\machine\software\classes\GCCollectionLib.GCCollectionGlobal\CurVer 7
\registry\machine\software\classes\GCCollectionLib.GCCollectionGlobal.1 7
\registry\machine\software\classes\GCCollectionLib.GCCollectionGlobal.1\CLSID 7
\registry\machine\software\classes\gcSoftwareUpdateLib.SoapClient 7
\registry\machine\software\classes\gcSoftwareUpdateLib.SoapClient\Clsid 7
\registry\machine\software\classes\gcSoftwareUpdateLib.Update 7
\registry\machine\software\classes\gcSoftwareUpdateLib.Update\Clsid 7
\registry\machine\software\classes\gcTCPObjLib.Connection 7
\registry\machine\software\classes\gcTCPObjLib.Connection\Clsid 7
\registry\machine\software\classes\gcTCPObjLib.HTTP 7
\registry\machine\software\classes\gcTCPObjLib.HTTP\Clsid 7
\registry\machine\software\classes\gcTCPObjLib.HTTPCallBack 7
\registry\machine\software\classes\gcTCPObjLib.HTTPCallBack\Clsid 7
\registry\machine\software\classes\gcTCPObjLib.TCPIPQuery 7
\registry\machine\software\classes\gcTCPObjLib.TCPIPQuery\Clsid 7
\registry\machine\software\classes\Microsoft.AntiSpyware.ShellExecuteHook 7
\registry\machine\software\classes\Microsoft.AntiSpyware.ShellExecuteHook\CLSID 7
\registry\machine\software\classes\Microsoft.AntiSpyware.ShellExecuteHook\CurVer 7
\registry\machine\software\classes\Microsoft.AntiSpyware.ShellExecuteHook.1 7
\registry\machine\software\classes\Microsoft.AntiSpyware.ShellExecuteHook.1\CLSID 7
\registry\machine\software\classes\Microsoft.AntiSpyware.Trust 7
\registry\machine\software\classes\Microsoft.AntiSpyware.Trust\CLSID 7
\registry\machine\software\classes\Microsoft.AntiSpyware.Trust\CurVer 7
\registry\machine\software\classes\Microsoft.AntiSpyware.Trust.1 7

\registry\machine\software\classes\Microsoft.AntiSpyware.Trust.1\CLSID 7

3. Go to Start>Run. Type 

cmd
and click OK.

4. Type 

regini c:\path\to\MSASfix.txt
and hit Enter.

The command should take very little time to execute and will provide no output.

It is recommended at this point that you uninstall MSAS at this point, then reinstall and re-run the fix.

NOTE: This is NOT an ideal workaround. The above workaround gives "Everyone: Full Control" to the registry keys. A more advanced solution would set the keys to the "Users" group. We are currently working on a better solution and hope to be able to provide that soon.