Hi all,   a mystery needs solving any suggestions much appreciated:

We are trying to install Exchange Server 2013 on Windows 2012 server.

The ISO File being used is: SW_DVD9_Exchange_Svr_2013w_SP1_MultiLang_Std_Ent_MLF_X19-35118

All preparation and requisites in place.

During Stage 2 Copying files, we receive an error code 1603 and installation halts.

The error states:

Installing product F:\exchangeserver.msi failed. Fatal error during installation. Error code is 1603. Last error reported by the MSI package is 'Source file not found: F:\Setup\ServerRoles\ClientAccess\Owa\prem\version\resources\themes\base\0\microsoft.o365.controls.timeline.mouse.css.  Verify that the file exists and that you can access it.'.

We have verified that the Path in the error is correct and exists BUT the file is not present within the 0 folder.

We have downloaded the ISO from our Action Pack resources twice and attempted 4 separate installations.

We have tried both Mailbox/Client Access  and Mailbox only installations.

The missing file: microsoft.o365.controls.timeline.mouse.css. Hopefully the only file misisng???

Any ideas anyone, could we source a different ISO or copy of the file or ?????

Many thanks in advance

I'm not sure if the ISO you are downloading is RTM or if there are any SP's or CU's included with it.  But I would recommend downloading the latest CU package from Microsoft.  Each CU package represents a complete install of Exchange 2013 so you can run a complete install from the latest packages.  

https://www.microsoft.com/en-us/download/details.aspx?id=45221

Also, make sure you disable AV while youre performing the install.

• Proposed as answer by Hinte Monday, January 05, 2015 10:14 PM

Hinte,

Thank you for your suggestions. 

We had disabled AV and will now download and install the lastest package.

I will report back on success or ?

How'd the install go after downloading the new media?

Had the same issue with Exchange 2013 SP 1 Downloaded as an ISO from the Volume License Center, installing on a new Server 2012R2 STD box. I found the equivalent file in another ISO but discovered it was just an empty CSS file. So the easiest way is to not bother trying to find the file but: 1) open notepad, 2) set save to "All Files", and 3) save an empty CSS file with that filename then place it in the directory indicated in the path given in the error. (Make sure it saves as a CSS and not as a TXT.)

I reran the install and it completed without issue.