Try to clear your download cache.

Originally posted by AustrAlien2010:

The cloud uses internet. Internet may or may not work.

Nobody ever fixes these problems, and people continue to have problems with it for decades.
I would probably just turn it off.

If you turn it off, you no longer have these problems.

Your google-fu sux, i know for a fact, plenty of steam unoffcial helper has fix and help with this before.

From steam tekst before you select a Forum.

Welcome to the Steam Discussions
Everyone is invited! The Steam discussions are for everyone, new and advanced user alike!

Searching is key! Before you post a question, use the forum search feature to determine whether your topic has already been covered.

Do not start flame wars! If someone has engaged in behavior that is detrimental to the discussion -- spamming, harassment, etc -- report the post and we'll take a look.


serch and you shall seek and find, dont mean yuo have to wake a necro post with a solutions.

It's not our falth if you have hibernation or other pc settings like wifi or other ways that drop connection.

I could also say is it steam falth if you have a damage cable or pc or own router even,

You should be gratefull that some one dare tell you such. ( because in this times who else will have the gust to say fix your issue, and test on spare PC even, if you knew how many time multi pc user get caught in work fine at spare test pc ( excuess my before we ripe head of Steam support or a ISP ) if we proof, okay i have a own pc issue. with whatever MS or other app that interference with procedur.

if you knew how many time even tech dude get a holy crap i need to ID cause with whatever crazy idea we sometimes get.

Aand technicaly steam any Network issue is not a steam issue that is your ISP, problem is depend on service and if they can test your connection and problem is not there, you are in trouble and bill from maybe wast a ISP time.

So make sure you dont have a own local issue. ( this is fact not fiction )
could save is one thing , disconnecting with network that look like your problem.

And again be happy we bother to dare tell you this.

ohh and dont come here with your wifi issue thats a home network crappy solution worst network solution ever made for gamers.

Steam dont use WIFI isp dont use WIFI , they are on fiber and patch cable, wifi is only at yout location, i don't even think a ISP dare use WIFI as a emergency solution ever.

Do not use VPN, any tech dude can tell you, you prolong jumps and TTL counter.

We do what we can to help. And we suggest things that haven't been suggested before, because maybe doing something else fixes it.


This is what a search got us:

"
This issue may be related to your internet connection or Steam's server stability. Try checking your network settings or restarting your router to see if it improves the connection during uploads.

Understanding Steam Cloud Save Issues

Steam Cloud Save allows you to store game saves online, but sometimes users experience connectivity issues during uploads. If Steam disconnects and reconnects every time you upload a file, it can be frustrating.

Possible Causes
Network Issues
Internet Connection: A weak or unstable internet connection can cause Steam to disconnect.
Firewall Settings: Your firewall may be blocking Steam's connection, leading to disconnections.

Steam Client Problems

Outdated Client: Ensure your Steam client is updated to the latest version.
Corrupted Files: Sometimes, corrupted files in the Steam installation can cause connectivity issues.

Solutions
Check Your Internet Connection

Test your internet speed and stability.
Restart your router to refresh the connection.

Adjust Firewall Settings

Allow Steam through your firewall.
Temporarily disable the firewall to see if it resolves the issue.

Update Steam

Go to the Steam client and check for updates.
Restart Steam after updating.

Verify Game Files

Right-click the game in your library.
Select "Properties," then go to the "Local Files" tab and click "Verify Integrity of Game Files."

Reinstall Steam

If issues persist, consider reinstalling the Steam client. Make sure to back up your game saves before doing this.

By following these steps, you should be able to resolve the disconnection issue during Steam Cloud Save uploads.
"


As you can see, there can be a lot of reasons why you have this issue.
And that's why many users simply use a local drive to put their save files on. Because it's easier if you manage your own backups, because then you aren't relying or depending on Steam or the internet for it to function, instead you're simply in control of it yourself.