You see PowerPoint close without warning. When you check the Windows Event Viewer, you find an AppCrash entry pointing to MSO.DLL. This error means a core Office library file failed during a specific operation such as opening a slide, saving, or running a macro. The crash can happen on both Windows 10 and Windows 11 … Read more
When you try to push slides from PowerPoint to a shared Slide Library, you may see the error message Slide Library Is Read-Only. This usually happens because the library folder on the network or SharePoint site has permissions that prevent writing, or because the Slide Library feature itself is configured to block incoming content. The … Read more
When you open PowerPoint and see the error message ‘Connection to Server Could Not Be Established,’ the program cannot connect to Microsoft 365 servers. This error typically appears when you try to sign in, activate Office, or use cloud features like AutoSave or Designer. The cause is almost always a network misconfiguration, a firewall block, … Read more
A .ppsx file is a PowerPoint Slide Show file. When you double-click it, PowerPoint opens the file directly in full-screen slideshow mode. This behavior can be inconvenient if you need to edit the file, review static content, or present from a specific slide without advancing through the entire show. The cause is the file extension … Read more
When you try to open a .pptm file in PowerPoint, you may see an error stating that the file is blocked by Group Policy. This happens because your IT administrator set a security policy that prevents opening files with macros from certain locations. The .pptm format contains VBA macros, which can carry malware, so many … Read more
When you open a .potx template file in PowerPoint, it creates a new unsaved presentation based on the template. This new file is a .pptx, but you cannot directly save over the original .potx without breaking the template structure. The problem is that many users accidentally work inside the template itself or lose slide masters, … Read more
You have a .thmx theme file from a client or a design team and you need to use its color palette and font scheme in your own PowerPoint presentation. A .thmx file is a packaged Office Theme that contains color, font, and effect definitions but it cannot be opened directly like a regular presentation. This … Read more
You want to compare two versions of a PowerPoint presentation to see exactly what changed between slides, text, or formatting. PowerPoint saves presentations in a binary .pptx format that diff tools cannot read directly, making it impossible to track granular changes. This article explains how to save a presentation as an XML slideshow .xml file, … Read more
You want to ensure a PowerPoint file stored in OneDrive is always available on your local computer, even when you are offline. OneDrive provides a file status marking called “Always keep on this device” that forces the full file to stay downloaded. This article explains what this mark does, how to apply it to one … Read more
You want a specific PowerPoint file to appear at the top of the Open menu every time you launch PowerPoint, whether you are on a desktop, laptop, or tablet. The built-in Quick Access list in PowerPoint relies on the Windows Recent Items system and your Microsoft account, but the list does not sync automatically across … Read more