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Error when you click on the Projects link in the top navigation bar in Project Online

  • Applies to: Project Online

Symptoms

When you click the Projects link from the Microsoft 365 ribbon to get to Project Web Access (PWA), you receive one of the following errors:

Error
An unexpected error has occurred.
Troubleshoot issues with Microsoft SharePoint Foundation.
Correlation ID: ########-####-####-############
Date and Time: <date and time>

Or

Sorry, this site isn't available right now.
Give us a few minutes and try again. If it still doesn't work, contact your administrator.
-------------------------------------------------------------------------------
GO BACK TO SITE

You can still navigate to Project Web App by typing the URL in the address bar. Alternatively, sign in to the SharePoint admin center as an admin. Select the link to the PWA site collection once, and when the dialog comes up click the link again.

Cause

This issue occurs in the following scenarios:

Cause 1

Your Office365 tenant was recently upgraded and your Tenant admin hasn't upgraded the My Site collection for your tenant.

Cause 2

The default PWA site with the suffix "/sites/PWA", such as https://domainname.sharepoint.com/sites/PWA, has been renamed or deleted.

Resolution

Resolution steps for Cause 1

  1. Sign in to your tenant with a SharePoint admin account.

  2. Select the drop-down list for Admin and then select SharePoint to open the SharePoint admin center.

  3. Check the box next to the URL for your My Site collection, for example https://domainname-my.sharepoint.com.

  4. On the ribbon, select Upgrade and then select Site collection upgrade settings.

  5. In the Site collection upgrade settings dialog box, select the Link to upgrade page.

  6. Select the link to REVIEW SITE COLLECTION UPGRADE STATUS and upgrade the site.

The My Site collection is upgraded for all users in your tenant. Also, the Projects link navigates to the default web site which ends in PWA, for example https://domainname.sharepoint.com/sites/PWA.

Resolution steps for Cause 2

The Project link in the top navigation bar requires a default PWA site which has the suffix "/sites/PWA" to work. An example is https://domainname.sharepoint.com/sites/PWA.

You can restore the default PWA site if it is deleted but is still in the Recycle bin. Alternatively, you can create a new PWA site named "PWA" in the Sharepoint admin center.