How do I fix apps installation issues on my MacBook Air M4 with macOS 15.5?

Hi, that seems odd for a new MacBook.

By any chance did you encounter any pop-up stating that apps can only be signed and installed through the App Store?

Assuming you did download apps from respective websites?

If that’s the case, check if there’s a version of the app in the App Store; otherwise, General settings -> Privacy & Security -> close to the bottom you can change the Security setting (Allow applications from …

Barney-15E wrote:

I am the only user and I wouldn't want to manage multiple environments.

You don’t. You just use the account that works.

Since you have nothing on it, use Erase All Content and Settings and try setting it up again.

Another option would be to return it. Apple offers a 14-day no questions asked return policy. There is certainly something wrong with it. It could be the macOS installation, or it could be something worse.

Personally, I do not use Google Chrome or Microsoft Edge or any other Microsoft Windows Applications on any of my 3 Apple Computers

That I leave to my ancient Lenovo T460 Laptop

As for Firefox, using version 138.0.4 (aarch64)on all there machines without issue ( 1 M2, 1 M3 and yes 1 M4 )

Let us see what is going on with the computer

To skip the Q&A session, just download the Application Etrecheck directly from the Developer. 

It’s a diagnostic tool that doesn’t change your computer at all. It gives you a clear and easy-to-read list of both your hardware and software. 

You can get it for free or pay for extra features. And don’t worry, the report won’t reveal any personal information. 

Once you’re done, just copy and paste the full report using the Additional Text Icon.

Lastly - should you decide to use and post the Report now or at a later time, we are willing to have a very close look and offer some insights 

Barney-15E wrote:

Barney-15E wrote:

I am the only user and I wouldn't want to manage multiple environments.

You don’t. You just use the account that works.

Since you have nothing on it, use Erase All Content and Settings and try setting it up again.

Another option would be to return it. Apple offers a 14-day no questions asked return policy. There is certainly something wrong with it. It could be the macOS installation, or it could be something worse.

👍

BDAqua wrote:

LSD is Launch Service Daemon, suggest getting Sequoia version of Onyx to rebuild it… is. The database the OS uses to know which app handles which filetylpe.

Thank you

Though as mentioned on May 22

Any of the LSD crashes appearing in Console log disappeared

That is, until the next release of a possible Sequoia 15.6 that still in the AppleSeed Beta Program as of June 30th

Will keep the Onyx idea in mind

LSD is Launch Service Daemon, suggest getting Sequoia version of Onyx to rebuild it… is. The database the OS uses to know which app handles which filetylpe.

I am the only user and I wouldn't want to manage multiple environments.

You don’t. You just use the account that works.

Since you have nothing on it, use Erase All Content and Settings and try setting it up again.

girl_gone_going wrote:

Interestingly, EtreCheck itself froze when I clicked “Share Report”, so I had to use Copy Report to Clipboard instead.

Copy Report to Clipboard is the primary "Share Report" functionality. It seems to have worked.

Except for one repeatable crash with Chrome, I don't see any problem.

Microsoft and OneDrive are behaving as expected. This is a common complaint. There's even a meme about it:

Usually most people want to get rid of OneDrive. I even cancelled my Microsoft subscription and downloaded the apps again via the Mac App Store. That way, they aren't constantly updating. I don't even have OneDrive installed.

I think there is some problem here, but it isn't a hardware problem. Your Chrome crash indicates that Google was running from an external volume or disk image. The most common crash is from an internal stickers daemon. That's unusual.

My recommendation would be to reset the computer. When you set it up again, be more careful about installing 3rd party apps. EtreCheck will be useful. You can keep running that to check for these kinds of repeated crashes. If they start happening again, you'll know that it must have been something that you recently installed.

Just bought MacAir M4, sequoia 15.5, couldn't install Chrome, Edge, Onedrive, Firefox,

All of the information you provided appears that you installed them, but they crash. I would imagine something is amiss in the Mac.

Why not use another account if it works?

You note the machine is “clean,” but you are having problems with lots of third-party software. Doesn’t sound clean.

There is something serious wrong with the Drive

How or why it is that way, is beyond my understanding

As suggested by @Barney-15E 👍

Return it ASAP

A " Mac OS Extended Partition Map "

Would be  disk3s1s1 - Macintosh HD

        Filesystem: APFS

Bring you Receipt of Purchase with you

They, Apple Employees, will determine if the computer needs replacement, repair or exchange

girl_gone_going wrote:

Just bought MacAir M4, sequoia 15.5, couldn't install Chrome, Edge, Onedrive, Firefox, Safari doesn't load onedrive web version. Any tips?

Yes

Writing an effective Apple Support Communities question

Reliable , accurate, details / context will really help

There is very little actionable information to work with.

What has the User ( you ) done to try and fix this issue.