In PowerPoint or Word i suddenly get a different Explorer View when I "Open" and "Search"...

Hello

Thanks for the answers. But that's not what I'm looking for.

I search for a solution to "unlink" the fields in header and footer. For example a date field, which updates when I print or open the file.

In word I can do this with a macro, but in excel and powerpoint that solution didn't worked.

Dear Charles,
<br />thank you so much for your help. I must update the given information a bit: When I posted this, I thought that only two docs were affected, but in reality there a more - yet, by far not all of them. I can open others, that are filed on that same external drive as well (in the same folder or in others), without any issues. All of them are docx.
<br />I worked on two of them on Dec 9 the last time with Word Microsoft 365, and all was fine. I sent these docs via email back then, but when I try to open them in that email, the same error message appears.
<br />Strangely enough, these docs can be easily opened by another email recipient (android), who tried to file it under a different file name and then sent it back to me, with no positive result, unfortunately. Just now, however, I decided to send the docs to another email address of mine, where I could open them and add a small modification, file them in the cloud and send them back to my inbox - and, gladly enough, it worked, I can open the documents without any issues. What on earth is the issue???
<br />Cheers, Denise
<br />

Many thanks for the suggestions. They did not help, though. I deleted the template Book.xltx in the start-up folder and made sure there is none anywhere on the C drive. After the close / open /close / open procedure I am back to A1 style.

There is no PERSONAL.XLSB on my C drive. I checked also the spelling in lower case. But when I open an existing workbook directly in the file explorer, the I do get actually two books: the one I wanted and an empty Book1.xlsx. Is this the other workbook
your mention? Is it associated with the root cause? I would be grateful for a sound solution.

For the time being I implemented a Autpen VBA procedure, which is setting the R1C1 style at opening of the workbook. But that is a bit clumsy and I would appreciate a more professional solution.

Are you able to open the files?

Is the problem that when you are only able to open the files in Read Only mode?

Where your files save to a CD or DVD? If so, the "Read Only" attribute may have been set on and can be turned off by right clicking on a file in Windows Explorer or the File Explorer and then left click on Properties.,

This is the German PowerPoint Answers forum. Not everyone here reads and writes enough English to answer a question posted in English, German is preferred. So if you do not get sufficient answers here, you might consider posting in the English version of
Microsoft Answers. Or repeat your question in German. Or look for a 3D forum.

I myself do not use the 3d builder, I prefer Paint 3D, which comes for free with Windows 10.

The preferred file format for 3d in PowerPoint is .glb. And I know that this file format supports transparency. If such a file has transparency, it usually is shown on PowerPoint slides. So I suspect there is a problem when exporting the file to glb. Did
you test the glb file in other programs? Does it show transparency?