Sign-in & Login Problems

Fix Repeated Sign-In Prompts for SharePoint PDFs in Microsoft Teams

Amos Gikunda Oct 9, 2026 869 views

Question details

Users want to view and print PDF documents from an organization-wide SharePoint library inside a Microsoft Teams Power App without being repeatedly prompted to sign in.

How to Fix Repeated Sign-In Prompts for SharePoint Documents in Teams

Product: Microsoft Teams and SharePoint
Device & OS: not provided
Scenario: Accessing and printing PDF files stored in a SharePoint library that is embedded within a Power App inside Microsoft Teams.
Observed behavior: Employees are caught in an authentication loop, being repeatedly prompted to sign in when viewing or printing files, despite the library being shared across the organization.

Before you start

Ensure that your Microsoft Teams application is up to date and that you are logged into the correct organizational account that holds permissions for the SharePoint library.

Solution 1Recommended

Access Files Directly Through the Teams Files Tab

Bypassing the Power App integration and opening the files natively via the Microsoft Teams interface prevents redundant authentication loops.

Embedded Power Apps in Microsoft Teams sometimes struggle to pass authentication tokens seamlessly to SharePoint, especially when rendering PDFs. Navigating to the native Files tab resolves this by using Teams' built-in credential management.

Navigate to the Teams Channel

Open Microsoft Teams and go to the specific team and channel where the SharePoint documents are usually accessed.

Open the Files Tab

Click on the 'Files' tab located at the top navigation bar of the channel.

View or Print the PDF

Locate your PDF document in the list, click to open it directly within Teams, and use the native print or view options without encountering additional sign-in prompts.

Access Files Directly Through the Teams Files Tab

Seamless Access: Opening files this way utilizes your active Microsoft Teams session, eliminating the need to authenticate again for SharePoint.

Solution 2

Seek App-Specific Guidance from the Power Apps Community

If your workflow requires users to stay within the Power App, you may need a developer-level fix for the app's authentication settings.

Free Microsoft Office alternative

Use WPS Office for Hassle-Free PDF and Document Management

While Microsoft Teams and Power Apps offer extensive enterprise integrations, dealing with constant login prompts just to view or print a PDF can disrupt your workflow. WPS Office provides a seamless, standalone solution for viewing, editing, and printing PDFs and Office documents without complicated cloud authentication loops.

1. Download and Install: Get the free WPS Office suite from the official website and install it on your computer.
2. Open Your PDF: Right-click your downloaded PDF file, select 'Open with', and choose WPS Office.
3. Print Without Interruption: Use the print icon or press Ctrl+P to print your document immediately, completely bypassing cloud authentication loops.

Fully compatible with Microsoft Office formats (Word, Excel, PowerPoint) and PDFs.Built-in robust PDF reader and editor for instant viewing and printing without login barriers.Lightweight application that opens large documents quickly on any device.Free to use with a highly intuitive, tabbed user interface.

microsoft office alternative - wps office

Frequently Asked Questions

Why does my Power App in Teams keep asking me to sign in for SharePoint files?

This typically occurs due to browser security settings, third-party cookie blocking, or authentication token handoff issues between the embedded Power App iFrame and Microsoft Teams.

Can I print SharePoint PDFs directly from Teams?

Yes. By navigating to the Files tab within your Teams channel, you can open the PDF natively and print it directly without relying on an embedded Power App.

Does sharing a SharePoint library 'organization-wide' prevent login prompts?

No. Organization-wide sharing grants users the necessary permissions to access the files, but it does not bypass the technical authentication checks required when accessing files through integrated third-party or embedded apps.

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