Save Dialogue window and Save button greyed out/Unresponsive.

Hi ÁJ,

Are you referring to saving a Pages document as outlined in the steps below from the guide here?: Save and name a document in Pages on Mac - Apple Support

1. Click anywhere in the document window to make it active, then choose File > Save (from the File menu at the top of your screen).
2. Enter a name in the Save As field, then enter one or more tags (optional).
3. Click the Where pop-up menu and choose a location.
4. 

• If you want the document to appear on all your devices set up with iCloud Drive, save the document in the Pages folder in iCloud Drive. (To see this option, iCloud Drive must be set up on your Mac.)
• To create a new folder for the document, click the Where pop-up menu and choose Other, then click New Folder at the bottom of the dialog. Enter a name for the folder, then click Create.

5.Click Save"

If so, does the issue continue after checking and adjusting file permissions?

Change permissions for files, folders, or disks on Mac - Apple Support

Also, if exporting is there a specific file type that won't save? Export to Word, PDF, or another file format in Pages on Mac - Apple Support

Keep us posted. We'll continue to assist.

Cheers.

Hey there, ÁJ.

Got it, thank you for clarifying further. If you haven't yet, you can see if restarting your Mac device may help: Shut down or restart your Mac - Apple Support Restarting can seem like a simple step, but it can sometimes help resolve unexpected issues as it can refresh data/software.

If the issue continues after a restart, another thing you can try to help isolate this issue is to log into your Mac in a temporary new user: Set up users, guests, and groups on Mac - Apple Support  A new user doesn't have custom or changed settings, and can help determine possible next steps by isolating this further, as it can show if the issue is inside your current user or not.

You could also test in safe mode as well to try to see if this issue happens there as well. Safe mode only allows certain software to load, which can help isolate this further or even possibly resolve the issue, as it can do a basic check up on your startup disk. You can read more about safe mode here (which includes on how to start up in safe mode, if needed): How to use safe mode on your Mac - Apple Support

Take care.

Same issue. No app works. Mac native? No. Microsoft Word? No. The "Save" button is grayed but, but not only that, but the entire "Save As" popup window is unresponsive. You can't select a different folder, use the dropdown... nothing.

Please fix ASAP!!!! This is crippling.

Please see my reply to OP. This flaw makes saving any work impossible. IN other words, it makes a Mac unusable for any business.