Has anyone else had this error message when trying to view uploaded pdf's on QB's bills?INVALID_AUTHORIZATIONCLIENTAuthorization header is missing

Let's troubleshoot to fix the error so you can view your bill's PDF attachments, Sarah.

I understand the convenience of seeing an attachment directly from the entry. To assist you better, can you confirm the device you're using to open the file? It will help us provide appropriate solutions according to your situation.

If you're utilizing the mobile app, the data stored on your device may impact the functionality. Follow these steps to reset it without deleting your app's documents and data:

For iOS:

1. Go to Settings, then tap General.
2. Select iPhone Storage, then click the QuickBooks Online app.
3. Tap Offload App.

For Android:

1. Go to Menu ☰, then tap More Options ⋮.
2. Navigate to Settings, then Refresh Data.
3. Click YES to confirm.

However, I recommend uninstalling and re-installing it if the issue persists. This way, we can ensure that the app is up to date.

On the other hand, log into your account through an incognito or private window if you're using a web browser. This mode doesn't retain cache to verify if it's a webpage issue. Here are the keyboard shortcuts you can use:

• For Firefox, press Ctrl + Shift + P
• For Chrome, press Ctrl + Shift + N
• For Safari, hold down Command + Shift + N

If it works, clear the browser's cache to start with a clean slate. Alternatively, consider employing other supported browsers.

Otherwise, I recommend contacting our live support team for further assistance. They can dive deeper into the app or web's behavior and resolve underlying issues. Note the support hours under QuickBooks Online in this article to reach us at your convenience: Get help with QuickBooks products and services.

Once fixed, refer to this guide to modify or remove the file from the transactions: Add or delete attachments in QuickBooks Online.

Additionally, check out this reference to record business expenses: Enter and manage bills and bill payments in QuickBooks Online.

This thread is open for more concerns with attachments or questions about handling bill payments. I'm all ears and ready to help you out.