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How to validate certificate renewal saved request (.req)

Hi,

I am having trouble renewing a certificate for Exchange 2010. I have clicked on the"Renew Exchange Certificate" which then brought me to the certificate request wizard. I then created and saved the request file. My question is; how can I use the .req file I created to renew the exchange certificate?

As this will be a self signed certificate, I did the following steps I found on this forum :

1.       Open the .req file saved and Copy all the contents.(I have used notepad to open this .req and this is the result [Note this is not the full string]:

舰㘄舰ḃĂ 隁଱र̆ѕጆ娂ㅁ〕ؓ唃ࠄఌ敗瑳牥慃数ሱူ̆ѕఇ䌉灡⁥潔湷⬱⤰̆ѕఊ圢獥整湲䌠灡⁥牐癯湩楣污倠牡楬浡湥ㅴ

2.       Open the Certificate Services page, by opening the Internet Explorer and enter the http://CASERVER/certsrv URL. (Which I am accessing via my exchange server's browser)

3.       Click on the Request a certificate task option.

4.       Click on the advanced certificate request on the next screen.

5.       On the Advanced Certificate Request page, click on the base-64 encoded link.

6.       Paste the contents of .cer file in the Saved Request box.(<--- This I am not sure about, it says "Paste the contents of .cer file" I'm sure they mean .req file, which I then copy and paste.)

7.       In the Certificate Template, select the Web Server and click on Submit.

8.       Depending upon your Certificate type, you will be issued the certificate. Next step will be to download this certificate by clicking on the Download certificate link in Certificate Issued screen.
9.       Save the .cer file to any location.

The problem is I get this error message:

Image may be NSFW.
Clik here to view.

Is there anyone that can shed some light on this please, or point me in the right direction?

Thanks in advance.


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