Ok so due a hick up our SSL cert on the exchange 2013 expired last night and this morning we had no exchange server.
I've we've bought another SSL cert downloaded it from Go Daddy but I am having trouble installing it.
So far I've Installed an Intermediate Certificate
and it appears in Certificate
Apparently I should get a new certificate with “Pending request” but it doesn't appear
I am at total lose any help would be great
Thanks
Ian.

Instruction I've followed
To Install an Intermediate Certificate in Microsoft Exchange Server 2013
1.Click Start, and then click Run....
2.Type mmc, and then click OK. The Microsoft Management Console (Console1) window opens.
3.In the Console1 window, click File, and then select Add/Remove Snap-in.
4.In the Add or Remove Snap-ins window, select Certificates, and then click Add.
5.In the Computer Account window, select Computer Account, and then click Next.
6.In the Select Computer window, select Local Computer, and then click Finish.
7.In the Add or Remove Snap-ins window, click OK.
8.In the Console1 window, click + to expand the Certificates (Local Computer) folder on the left.
9.Right-click Intermediate Certification Authorities, mouse over All Tasks, and then click Import.
10.In the Certificate Import Wizard window, click Next.
11.Click Browse to find the intermediate certificate file.
12.In the Open window, change the file extension filter to PKCS #7 Certificates (*.spc;*.p7b), select the *_iis_intermediates.p7b file, and then click Open.
13.In the Certificate Import Wizard window, click Next.
14.Select Place all certificates in the following store, and then click Browse.
15.In the Select Certificate Store window, select Intermediate Certification Authorities, and then click OK.
16.In the Certificate Import Wizard window, click Next.
17.Click Finish.
18.Click OK.
19.Close the Console1 window, and then click No to remove the console settings.
To Install an SSL Certificate in Microsoft Exchange Server 2013
1.Log in to the Exchange Admin Center.
2.From the left menu, select Servers, and then click Certificates.
3.Select your certificate (it has a “Pending request” status), and then click Complete.
4.For File to import from, enter the certificate file path we provided (such as \\server\folder\coolexampl
e.crt), and then click OK. Exchange installs your certificate.
5.In the Certificates section, select your certificate again (the status changed to “Valid”), and then click Edit (pencil icon).
6.Click Services, select the services to which the certificate applies (SMTP, UM, UM call router, IMAP, POP, and/or IIS), and then click OK. Your certificate is now ready to use with Exchange 2013.
d
if you have not done a new certificate request, then you will not see a "Pending request" button.
Simple install certificate into store, from that Certificates page, go to ... (3 dots) and select import certificate. After that you can enable it for the same services as old one was used. Those will be IIS, and maybe some other.
Click on old certificate, and see for what services was it enabled. Then click on new certificate, and you will have option to enable it for services.
Regards,
Ivan.