About SharePoint Whole Management HTTP 503 Errors

Question

Regarding the title, I have downloaded the trial version of SharePoint Server 2019, completed the product configuration wizard, and when I try to connect to the general administration, I get an error message "HTTP Error 503. The service is unavailable" and cannot connect.
I found out that the above error may occur if I forgot to change the password for SharePoint Central Administration, but since I cannot connect to Central Administration in the first place, I think there is another reason.
IIS confirms that SharePoint Central Administration v4 and SharePoint Web Service Root are up and running as they are in the Started status.
If anyone knows how to deal with this, please let me know.

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Answer 1

Hi @K_93u ,

Based on my research, you can do some troubleshooting:
1，Make sure all services related to SharePoint are up and running.
Go to Services.msc.

2，Go to Internet Information Services(IIS) Manager.

If the error occurs when accessing the Central Administration site, the "SharePoint admin center v4" application pool may be stopped and needs to be started.If the error occurs when accessing the SharePoint site, the "SharePoint – 80" application pool may have been stopped and needs to be started.
For this, select the correct application pool, click Start. Reboot if already started.

3，If the necessary application pools are started and the error persists, then you should check the group membership of the group "IIS_IUSRS" and the application pool account in Local Group Policy (visible in IIS Manager).

Check the group membership of the group "IIS_IUSRS"
Go to IIS Manager, note the account of the application pool in question in the identity column.

Go to lusrmgr.msc, Open Local Users and Groups and the group "IIS_IUSRS".The application pool account must be a member of this group.

Check the application pool account in Local Group Policy.
Go to gpedit.msc. Open Local Group Policy Editor.
Open the following items:
Computer Configuration > Windows Settings > Security Settings > Local Policies > User Rights Assignment.
Verify that the IIS_IUSRS group is included in the following policy:
"Log on as batch job" and "Impersonate client after authentication"

Thanks,
Yanli Jiang

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