Introduction

When working with Microsoft Office applications, users might encounter a troubling notification stating that their "cached credentials have expired." This error often arises when attempting to save files within applications such as Word, Excel, or other Office suite components. The cached credentials serve as a form of stored authentication data allowing users access to Microsoft 365 services without repeatedly entering their login details. This situation can become a significant hurdle, interrupting workflow or access to essential documents. Understanding the root causes and varying factors contributing to this error is crucial for users who need to resolve the issue efficiently and restore their productivity.

Causes of “cached credentials have expired” error

This error can stem from several sources, leading to frustration for users who expect a seamless experience with Microsoft Office. One common reason for the expiration of cached credentials is the simple natural expiry of the cached data stored locally on the user's device. These credentials have a distinct lifespan that, once exceeded, requires reauthentication.

Another frequent factor is a password change. When a user updates their password for security or compliance reasons, a mismatch can occur between the newly updated online credentials and the outdated cached ones on the device. This discrepancy leads to a conflict, prompting the system to display the expired credentials message.

In shared environments like SharePoint, where multiple users upload and download files, this issue can also become apparent more frequently. The error manifests because the cached credentials are commonly used across various services interlinked with Office applications, such as OneDrive, making it an issue that can affect numerous users within an organization.

Administrators within an organization have the capability to set specific policies governing the duration of password expiration. In instances where these policies have been implemented, users might encounter an expiration of credentials once the administratively defined period has lapsed. Consequently, this will necessitate a fresh sign-in to validate the newly updated passwords, ensuring that the credentials are synchronized across the board.

The complexities associated with cached credentials require a thorough understanding and systematic approach to troubleshooting, catering to both the user experience and the maintenance of a secure environment within Microsoft Office applications.

Method 1: Sign out and Sign in to Your Microsoft Account

One of the straightforward methods to refresh your cached credentials involves signing out and then signing back into your Microsoft account within the Office apps. This process can often resolve conflicts caused by credential mismatches or expiration. Follow these detailed steps to sign out of and then sign back into a Microsoft Office app.

Steps to sign out of a Microsoft Office app

To effectively sign out of your Microsoft Office account and clear possible conflicting credentials, you need to follow these instructions:

1. Launch any Office application that you’ve been using, such as Word, PowerPoint, or Excel.
2. Click on the File tab located on the upper-left corner of the app window to access the backstage view.
3. In the navigation pane on the left, select Account or Office Account if you are using an older version of Office.
4. Under the User Information section, you'll find your current account information. Click on Sign Out to log out from the account associated with Microsoft Office.
5. Exit the Office application by closing it.

Steps to sign back in after restarting the PC

After signing out, a system restart might be necessary to ensure that any lingering cache is cleared. Once you have restarted your computer, you can proceed with the following steps to sign back in:

1. Turn on your PC and wait for it to boot up completely.
2. Open the Office application where you just signed out.
3. Go to the File tab once again to access the backstage view.
4. Select Account from the left navigation pane.
5. In the User Information section, you will now see an option to Sign In. Click on this option.
6. Enter your Microsoft account credentials (email and password) when prompted.
7. If you have Two-Factor Authentication enabled, you'll need to approve the sign-in through your chosen verification method.
8. Once signed in, verify if the app saves and syncs files correctly without returning the cached credentials error.

Performing this simple sign-out and sign-in procedure can often restore connectivity to Microsoft's services and refresh your current credentials. By executing these steps, users can eliminate the chances of having a stale credential cache that could be causing the 'cached credentials have expired' error.

Method 2: Disable Office Sync with OneDrive

If the error persists even after re-signing into your Microsoft account, another step you can take is to disable the syncing of Office files with OneDrive. This measure targets compatibility issues between OneDrive and Office applications, which may result in the 'cached credentials have expired' error. Below are instructions on how to access the OneDrive settings and disable Office file syncing, which may resolve this error.

How to access OneDrive settings

Before you can disable the sync settings, you need to access the OneDrive application's settings panel. Here's how you can find and open the settings:

1. Look for the OneDrive icon on your taskbar. It may appear as a cloud icon. If it's not immediately visible, you might need to click the arrow icon to show hidden icons in the system tray.
2. Once you find the OneDrive icon, right-click on it to bring up a context menu.
3. In the context menu, look for a gear icon that represents 'Settings' or 'Help & Settings', and click on it to open the OneDrive settings dialog box.

The process of disabling Office file syncing

Upon accessing the settings of OneDrive, you can proceed to disable the feature that uses Office applications to sync your files:

1. Within the OneDrive settings dialog, navigate to the 'Office' tab, which you may find at the top of the window.
2. In the 'Office' tab, there will be an option that might read 'Use Office 2016 to sync Office files I open' or 'Use Office applications to sync Office files that I open', depending on your version of Office.
3. Uncheck the box next to this option to disable syncing of Office files through OneDrive using the Office suite.
4. Click 'OK' to save your changes and close the settings dialog box.
5. It is recommended that you close any open Office application before making this change, and then relaunch them after completing the above steps.

By implementing these changes, you separate the direct sync linkage between Office applications and OneDrive, potentially resolving any error causing the caching conflict. Make sure to restart your computer to ensure the changes take full effect. In some scenarios, users may want to re-enable this feature once they've confirmed the error is resolved, to take advantage of the collaboration benefits brought by syncing through Office.

Method 3: Clear Microsoft Office Credentials

Another effective strategy to resolve the 'cached credentials have expired' error is to clear your Microsoft Office credentials directly from the Windows Credentials Manager. This method eliminates cached credentials that might have been corrupted or have expired and are causing sign-in issues. Follow these instructions to remove specific Office credentials via the Windows Control Panel.

Instructions to close Office apps and access Windows Credentials Manager

Before clearing the cached credentials, it's essential to close all Microsoft Office applications to prevent any ongoing processes from interfering with the clearing procedure:

1. Ensure that all Microsoft Office applications such as Word, Excel, PowerPoint, and Outlook are completely closed. You can do this by right-clicking the application icons on the taskbar and selecting 'Close window' or 'Quit'.
2. Next, press the Windows key on your keyboard to open the Start Menu.
3. Type in 'Control Panel' in the search box and select the relevant result to open the Control Panel window.
4. Click on 'User Accounts' and then navigate to 'Credential Manager.' Alternatively, you can directly search for 'Credential Manager' in the Control Panel search box.

Removing specific cached credentials through the Control Panel

After accessing the Credential Manager, proceed with the following steps to remove the cached credentials linked to your Microsoft Office programs:

1. Within the Credential Manager window, find the 'Windows Credentials' section and click on it to expand the list of saved credentials.
2. Scroll through the list to locate any credentials associated with Microsoft Office or Office 365. They are usually listed under 'Generic Credentials' and may have names that include 'MicrosoftOffice' or 'OneDrive'.
3. Click on the dropdown arrow next to the Office-related credentials to view details.
4. For each of the Office-related credentials, click on the 'Remove' link to clear them from your system.
5. If prompted, confirm the removal by clicking 'Yes' or 'OK.'
6. After deleting all the Office-related credentials, close the Credential Manager and restart your computer to ensure the changes take effect.
7. Once the computer restarts, open the Office applications and you will likely be prompted to sign in with your Microsoft account credentials.

By clearing the cached credentials and signing in anew, the 'cached credentials have expired' error should be resolved, allowing you to save and synchronize your Office documents without further issues. Additionally, starting with fresh credentials can enhance the security of your account.

Method 4: Sync the Correct System Time and Date

Issues with system time and date synchronization can also lead to the 'cached credentials have expired' error due to time discrepancies between your system and the authentication servers. Ensuring your computer's time and date settings are accurate is vital for many services, including those provided by Microsoft Office. This section will guide you through accessing and adjusting these settings and configuring the Windows Time service to keep your system synchronized.

Accessing the Date & Time settings in Windows

To verify and update your system's date and time settings to reflect accurate information, you can use the following steps:

1. Press the Windows key on your keyboard, type 'Control Panel' in the search bar, and enter. Select 'Clock and Region' from the Control Panel's options.
2. Within 'Clock and Region', select 'Date and Time' to open the settings related to your system's internal clock.

Adjusting time automatically or manually

Here is how you can either set your computer to update the time automatically from an internet time server or adjust it manually:

1. Within the Date and Time dialog, go to the 'Internet Time' tab at the top.
2. Click on the 'Change settings' button. You may need administrative privileges to modify these settings.
3. In the Internet Time Settings dialog, check the box that says 'Synchronize with an Internet time server'.
4. Select a time server from the dropdown list or keep the default one provided by Windows.
5. Click on the 'Update now' button to force your computer to synchronize with the selected time server.
6. Once the computer has successfully synchronized the time, click 'OK' to close the Internet Time Settings dialog and again click 'OK' on the Date and Time dialog to apply the changes you made.

Configuring the Windows Time service

To ensure that your computer consistently maintains the correct time, the Windows Time service should be set to run automatically. Follow these steps to configure the service:

1. Press 'Windows Key + R' on your keyboard to open the Run dialog box. Type 'services.msc' and press 'Enter' to open the Services manager.
2. In the Services manager, scroll down to find 'Windows Time' in the list of services.
3. Double-click on 'Windows Time' to open its Properties dialog.
4. In the Properties dialog, set the 'Startup type' to 'Automatic' if it is not already.
5. If the service is not running, click the 'Start' button. Then click 'Apply' to save the changes and 'OK' to close the dialog.

After completing these steps, your Office applications should be able to authenticate smoothly, as the time-related issues that may have contributed to the 'cached credentials have expired' error are now resolved. Ensuring that the correct time and date are set on your computer is a fundamental step in addressing various problems related to credential validation and authentication processes.

Method 5: Delete Cached Files

Office applications create cached copies of files to enhance performance and user experience. However, these cached files can accumulate over time and, if they become outdated or corrupted, might contribute to the 'cached credentials have expired' error. It's important, therefore, to clear them periodically to avoid such issues. This method entails deleting cached files from within Office applications and using the Office Upload Center if available.

Navigating options within an Office app

For general Office apps like Word, Excel, and PowerPoint, you can delete cached files directly from the Options menu:

1. Open an Office application where you're experiencing the error, such as Word, Excel, or PowerPoint.
2. Click on the File tab which is located in the upper left corner of the application window to access the backstage view.
3. Choose Options from the menu on the left. This will open up the Word Options (or respective application) dialog box.
4. From the Word Options dialog, select the Save category in the left pane to adjust how files are saved.
5. Under the Save documents section, locate and click on the 'Cache Settings' button.

Deleting cached files in the Save panel

After accessing the Save options, you can clear the Office cache with the following steps:

1. In the Save panel, look for a button titled 'Delete cached files' or a similar option. Click on this button to clear all temporary files that Office has stored.
2. You may receive a prompt asking for confirmation to delete the cached files. Click 'OK' or 'Yes' to proceed.
3. If you're using the Office Upload Center, you can access it by searching in the Start menu. Open the Upload Center, click on 'Settings,' and under the Cache Settings, select 'Delete cached files.' Confirm the action as prompted.
4. After deleting the cached files, close the Office application, and any other Office applications that are open.
5. Restart your computer to ensure that all changes take effect, and no remnants of the old cache remain.

Clearing the cache can solve numerous problems related to document synchronization and uploading, especially when using OneDrive or editing files stored in Teams. By following these steps, you should be able to refresh your Office environment and bypass the 'cached credentials have expired' error when saving and opening files.

Conclusion and Discussion

Addressing the 'cached credentials have expired' error in Office 365 can be critical for maintaining a smooth workflow and ensuring uninterrupted access to Office programs. This guide has walked you through five methods aimed at tackling this issue, from re-authenticating your Microsoft account to clearing cached files and ensuring correct system time settings. It's worthwhile for users to explore each of these solutions to resolve the problem and understand the underlying causes that contribute to this error.