OWA and IIS

Make sure IIS3.0 with ASP is installed or IIS4 from the Option Pack (I would recommend IIS4). Reapply your NT service pack (if you havent yet done SP6a, now is a good time) Install the OWA components. Reapply the Exchange 5.5 service pack (again if you havent yet done SP4, now is a good time).
Make sure the users who need to use OWA have the "log on locally" right on the OWA server.
FYI: OWA 5.5 does NOT have to be installed on the Exchange Server. You can install OWA on any member serverthat is running IIS3,4, or 5.

OK.
U say u have installed but it doesnt work,

Instal these 2 patches in these order
1 ftp://.microsoft.com/bussys/winnt/winnt-public/fixes/usa/nt4/hotfixes-post3/roll-up (for intel use roll-uppi and roll-uppa.exe for alpha)
2 Only if you runnibg IIS3
ftp://ftp.microft.com/bussys/iis/iis-public/fixes/usa/ASP/asp-memfix (download and run the asp-memfix.exe this will decompress a number of files, platform specific in the temp folder.
STOP IIS
go to \winnt\system32\inetsrv\asp\asp.dll and rename it to aspold.dll
Go to the temp folder and pick your platform from the earlier decompressed folders in the winnt\systemintesrv.asp folder there is a asp dll copy this to you system \winnt\system32\inetsrv\aspRestart IIS
Now thry \servername\exchange
Hope it worked it always has for me.
If your still stuck email me and well gofrom here
Jamond

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