I get HTTP 503 "Service unavailable" error messages when attempting to open SharePoint Central Administration . What is the solution?
The problem was because of change of password . All application were getting stopped so followed below steps
In Administrative tools, click Internet Information Services Manager.
For the identity of the site or Central Administration application pool is a domain user account that has an expired password, do the following:
a. Right-click the application pool name and select Advanced Settings.
b. Select Identity and click the … button to open the Application Pool Identity dialog box.
c. Click Set.
d. Type the username and password.
Run IISRESET. To do this, open an Administrator command prompt and type iisreset at the command.
In SharePoint Central Administration, in Security, select Configure managed accounts.
Click Edit to update the information of the managed account that has the expired password.
Select Change password now.
Click Use existing password.
Type the password, and then click OK.
- First check your app pool status, try to recycle it.
- In app pool search for Advance Settings and then in Identity try to re enter your domain user id and password. Some times because of ApplicationHost.config file password encrypted entry you will get bad data exception. Generally this happens when you copy data from different IIS server. in that case try to do following steps Export:from original server
aspnet_regiis -px "iisConfigurationKey" "D:\iisConfigurationKey.xml" -pri
aspnet_regiis -px "iisWasKey" "D:\iisWasKey.xml" -pri
Import:on new server
aspnet_regiis -pi "iisConfigurationKey" "D:\iisConfigurationKey.xml"
aspnet_regiis -pi "iisWasKey" "D:\iisWasKey.xml"