Files continually corrupted

• Nov 27, 2023 - 04:04

Hi, I can't open musescore files now that I'm in the latest version. I keep getting notes that say "cannot read file C:(etc...) followed by .MSC" instead of .MSCZ. This even happened with a score I just redid after a previous corruption. Any help appreciated. I did not have this problem with Musescore 3


In your scores folder, is the extension msc also? If so, edit the extension to read mscz. I might do this to a copy of the file.

Mu1 supported .msc files, support for those got dropped with Mu2
So open them with Mu1 and save as .mscz, then open that with any later version

In reply to by Jojo-Schmitz

Not sure what Mu1 and Mu2 are.
I did look for a place to re-download Musescore 3 from this site but could not find it. Thought maybe I could open with that.
I store my files in folders where I create music (rather than in a musescore folder) and for some reason my computer will not let me rename them. It continually states "filename too long" even when I shorten the file name.

In reply to by VinceH

MuseScore 1(.3) and MuseScore 2(.3.2)
Only MuseSore 1 can read .msc files, only very old version of MuseScore way before 1.0 could write them
The chances that you really have such files is next to nil. Although being a member here sonce more than 11 years, who knows.

MuseScore 0.9.3 introduced the .mscz format, more than 15 years ago, see

It would appear my computer wants to name some of my scores as .msc even when created new. Any thoughts on why or how I might stop this? Very weird.

I have now tried opening in MuseScore 1.1, 3.0, and 4.1.1 (most recent). I was not able to open. Below is a collection of the notices I've received. I was able to go in and see the full file name and it DOES include the extension mscz, so that does not appear to be the problem. It appears that somehow my "internet security" is blocking me, but I don't have a way to change this and I don't understand why it blocks some files and not others, including those created relatively recently. Is there someone who can provide more detailed instruction on how to resolve this problem? I have even tried starting with and older version of the score and re-inputting my changes and saving it and still am not able to open (though fortunately I did export PDFs so at least I have a print version). I have also uninstalled and reinstalled Musescore 4.1.1 and updated it. I have restarted my computer 3 times.
Any help appreciated and sorely needed. Lost a lot of time on this.

Attachment Size
2023.11.27MuseScore problems.docx 43.72 KB
SIX_DA~4.MSC 81.98 KB

In reply to by VinceH

I renamed SIX_DA~4.MSC by adding a Z to it to make a MSCZ file and it opened in 4.1.1.

As to why your filename extension seem to be truncated to three characters or you can't rename files on your system, I can only Google and guess as I use Linux for music etc. and only use Windows at work for standard office files but it certainly sounds like a system problem rather than a MuseScore one.

In reply to by Jojo-Schmitz

Thanks for you question and your help. I have long file names, usually adding Draft 1, Draft 2, etc. as I create new editions of something I'm working on. I have no idea how to answer your question. I skimmed the Wikipedia link you set and it appears to require either a) more basic background understanding than I have or b) more thought than I wish to put into this. If you think this is worth my time, I'll dig in and try to mess with my software--but as I don't know what I'm doing it seems likely to create further problems. Or you could, if you have time and interest, provide some direction (that doesn't involve acronyms, since I have to go look those up and understand them and then try to keep them lined up in my brain while reading a no-doubt helpful article written by someone for whom said acronyms are long-understood words that require no translation). A long way of me asking you, who seem to know much more about this stuff, if this is worth digging into. At this point the problem with this score is resolved.
It is REALLY weird that my computer, before doing this, was not allowing me to add/alter file extension names (on this file at least), which was something I used to do all the time many years past.

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