'%3e%3cpath%20d='M8%200C12.4183%200%2016%203.58172%2016%208C16%2012.4183%2012.4183%2016%208%2016C3.58172%2016%200%2012.4183%200%208C0%203.58172%203.58172%200%208%200ZM11.6162%204.38379C11.2257%203.99337%2010.5927%203.99338%2010.2021%204.38379L8%206.58594L5.79785%204.38379C5.40732%203.99334%204.77429%203.99329%204.38379%204.38379C3.99331%204.77429%203.99335%205.40733%204.38379%205.79785L6.58594%208L4.38379%2010.2021C3.99348%2010.5927%203.99341%2011.2257%204.38379%2011.6162C4.77426%2012.0066%205.40734%2012.0065%205.79785%2011.6162L8%209.41406L10.2021%2011.6162C10.5927%2012.0066%2011.2257%2012.0067%2011.6162%2011.6162C12.0067%2011.2257%2012.0066%2010.5927%2011.6162%2010.2021L9.41406%208L11.6162%205.79785C12.0066%205.40735%2012.0066%204.77429%2011.6162%204.38379Z'%20fill='%23080E17'%20fill-opacity='0.46'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_3761_713'%3e%3crect%20width='16'%20height='16'%20fill='white'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e)
How to Fix Project Online Guest Access Error When Opening Projects
Question details
Guest users can access the Project Web App (PWA) site but receive an error when trying to open specific projects, even with a valid Project Plan license.
- Product
- Microsoft Project Online
- Device & OS
- not provided
- Scenario
- External or guest users attempting to view or collaborate on a project schedule within Project Online.
- Observed behavior
- Users receive an error message when clicking on 'Projects' to view the schedule, preventing access despite holding an active license.
Verify that the external user has accepted the initial guest invitation to your Microsoft 365 tenant and that their active Project Plan license is correctly associated with their account.
Share the Project Directly with the Guest User
Bypassing the standard Microsoft 365 group invitation and sharing the specific project directly ensures the correct permissions are applied at the project level.
Often, granting a user guest access to the broader Microsoft 365 environment or the PWA site is not enough to view individual project schedules. Explicit permission must be granted for each project.
Navigate to your Project Web App (PWA) site as an administrator or the project owner.
Go to the Project Center and click on the specific project you want to share with the external user.
Use the 'Share' feature within the project interface to explicitly add the guest user's email address, rather than relying solely on their existing Microsoft 365 group membership.
Verify Tenant URL and Authentication Domain
Ensure the guest user is logging in using the correct organization URL so that Microsoft 365 authenticates them against your tenant rather than their home tenant.
Manage Your Projects Easily with WPS Office
If Microsoft Project's complex permission settings and guest access issues are slowing down your team's collaboration, try using WPS Office. It provides powerful spreadsheet tools and ready-to-use Gantt chart templates to manage project schedules effortlessly without complicated external licensing.
- 1. Download and Install WPS Office: Download WPS Office Free from the official website and open WPS Spreadsheet.
- 2. Choose a Project Template: Browse the built-in template library and search for 'Gantt Chart' or 'Project Plan' to instantly start tracking.
- 3. Collaborate Instantly: Share your project spreadsheet via a direct link for easy external collaboration without managing tenant permissions.
Frequently Asked Questions
Why can my guest access the PWA site but not view the actual projects?
Accessing the Project Web App (PWA) site and viewing individual projects require different permission levels. Even if a guest is invited to the site, they must be explicitly granted view or edit permissions for specific projects, usually through direct sharing.
Does a guest user need a new Project license in my tenant?
No, if the external user already has an active and appropriate Project license (like Project Plan 3 or 5) in their home Microsoft 365 tenant, they do not need an additional license assigned from your tenant to access shared projects.
How do I ensure a guest logs into the correct Microsoft 365 tenant?
Provide the guest with the direct URL containing your specific tenant domain. Have them open this link in an incognito or private browser window to prevent their browser from automatically logging them into their own organization's Microsoft 365 environment.
