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I have download SharePoint 2013 since four months ago , I worked on it for one month , then I was involved with other products. Yesterday I tried to login to the central administration but I got the following error:- HTTP Error 503. The service is unavailable.

So I am sure that the 180 days trial version is expired , so I have the following questions:-

  1. If the trial version expired, will I get this error; HTTP Error 503. The service is unavailable ?

  2. If the problem is related to the fact that the trial expired, then how I can define a new valid key ?

  3. If the problem is not related to the trial version, what I can do to login to the CA again ?

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up vote 0 down vote accepted

Sounds like your farm account's password expired. You can reset this via a PowerShell script, but since you're in a trial/sandbox envionment you can try this hack which has worked for me in the past:

Change your farm account's password, then change it back to the old value. Then, configure your farm account's password to never expire.

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