In which architecture SharePoint is installed
Answer: check registry,
32bit:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\12.0\WSS\InstalledProducts\90120000-110D-0000-0000-0000000FF1CE
64bit:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\12.0\WSS\InstalledProducts\90120000-110D-0000-1000-0000000FF1CE
In which language SharePoint was installed?
Answer: check registry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\12.0\WSS\ServerLanguage\<LCID>
here you should see only one LCID
Which SharePoint language packs were installed?
Answer: check registry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\12.0\WSS\InstalledLanguages\<LCID>
here you will see something like this:
LCID - Reg_SZ - {language pack build level}
1033 - Reg_SZ - 12.0.4518.1000
1031 - Reg_SZ - 12.0.4518.1000
...
or
LCID - Reg_SZ - {language pack build level}
1033 - Reg_SZ - 12.0.6219.1000
1031 - Reg_SZ - 12.0.6219.1000
...
Note: It's important to have all language packs on the same build level!
Which server role is installed on each the server?
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\12.0\WSS\ServerRole
Value = {Application || WebFrontEnd ||Standalone}
To get an overview about all Microsoft LCIDs you can use this article: Local ID (LCID) chart
Here are my favorites:
| Locale description | Short string | Hexadecimal value | Decimal value |
| English - United States | en-us | 0x0409 | 1033 |
| French - France | fr-fr | 0x040C | 1036 |
| German - Germany | de-de | 0x0407 | 1031 |
| Spanish - Spain (Traditional) | es-es | 0x040A | 1034 |
| Italian - Italy | it-it | 0x0410 | 1040 |
Which Custom Code was installed on the farm?
Answer:
a) Get All WSP-Files from FARM using SharePoint Farm Solution Extractor
b) Check if features were installed without wsp files!
using WssAnalyzeFeatures to get a list of all featureID's inside the farm. Then you need to compare the featureID's with the 12-Hive-Features-folder. Here you should find for each featureID the feature binaries.
c) In case you do not have the feature binary any more it's important to remove the feature completely from SharePoint using WssRemoveFeatureFromSite.
