Sorry, you cannot edit this document with others

[OrdinaryWorld111]

Word and pptx can be edited multiple times by running VS, but after being deployed to the IIS server, Word and pptx can only be edited once. Opening them again will result in an error message: Sorry, you cannot edit this document with others. Excel can be edited multiple times. Have you ever encountered similar problems? Please give me some help

[petrsvihlik]

Nope. Have you tried to compare the files before and after editing? You can unzip any open office docs (including PPTXes) and compare the text files. Perhaps you can find what got corrupted.