File formats include jpeg, Word and Excel documents, and PDFs. Documents have come from downloads, email attachments, and documents created locally. Performed a full scan today which found no results. Performed a system refresh and no improvement. These are documents I've opened, edited, saved, sometimes reopened and used, and later, they randomly aren't working.

Currently saving all documents on the MicroSD card to keep the SSD drive as free as possible on the Surface.

Downloading a firmware update as I type this.

Thanks in advance.

Hi,

For the issue,please  open these files using other computer to see if we can open them normally.

Meanwhile,try saving all documents on your SSD to test it.

Regards,

It has happened to another Word file. I'm guessing it's the MicroSD card as I have trouble from time to time copy files to it from a thumb drive. Not all of the files will transfer or copy. The most recent issue in this Word file will not open on another computer. After trying to allow Word to recover it and that fails, the details provided are as follows: "Microsoft Office cannot open this file because some parts are missing or invalid." It's saving a .docx on the Surface.

Disk format is exFAT. SSD in the RT is NTFS. I pulled everything off I want to save and I'm formatting to NTFS to match the SSD drive. Did a quick search to find out if exFAT is more prone to corruption and got quite a few results, but I'm not sure if that's the issue or not. Thoughts?