SOLVED: 
I have not had to log on to the client for years and so have not made any changes there.  When I logged in today, I checked the networking settings.  It said "Local Area Connection - Validating Entry - Firewalled.
I checked the Firewall settings and found that Magicinfo was not listed as an exception.  I added this and lo and behold it worked.  I cannot understand how this was removed!!
That should keep it going for a few more years.
Hope this helps someone.
Nolly

I have been using Magicinfo 2507.0 for about 15 years and it has been able to do  everything I needed - essentially using the movie screen to play videos using a schedule from a server on the LAN.
I must have done something silly whilst uploading a schedule recently and now the server does not see the client.  Previously, the monitor's name appeared on the schedule, but now the only option is local.  Similarly remote management does not connect to the client.
I have gone back to the client and tried both connecting using the server name and via the ip address.  No change.
Any thoughts on how I may re-establish a connection?
Nolly

Hello, did you resolve this issue? I am having the same problem.

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Check the network settings on the screen

Hello, did you resolve this issue? I am having the same problem.

Hello everyone,

I am trying to create an API to download new content into MagicInfo.

Overall, everything works fine. I can add content from a folder, edit playlists, and broadcast them on my screens. My only problem is the display time, which is set to 5 seconds by default. I can't see any options to change this default time. I tried to force it by inserting the entire configuration from my API, but it didn't work. Can anyone take a look and tell me how to modify my program, or if there is a configuration file I can modify to change this default time?

Thanks in advance and have a great day.

Code : with powershell

# ================= CONFIGURATION =================
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

$baseUrl     = "http://IP:PORT/MagicInfo"  
$username    = "user"  
$password    = "password"  
$playlistId   = "playlistID"
$playTime     = 30
$productType  = "PREMIUM"

# ================= AUTHENTIFICATION =================
$loginBody = @{ username = $username; password = $password } | ConvertTo-Json
Write-Host "Authentification..." -ForegroundColor Yellow
$loginResponse = Invoke-RestMethod -Uri "$baseUrl/restapi/v2.0/auth" -Method POST -ContentType "application/json;charset=UTF-8" -Body $loginBody
$token = $loginResponse.token
# ================= PLAYLIST DETAILS =================
$playlistDetailsUrl = "$baseUrl/restapi/v2.0/cms/playlists/$playlistId/details?productType=$productType"
$responseFull = Invoke-RestMethod -Uri $playlistDetailsUrl -Method GET -Headers @{ "api_key" = $token }
$playlistData = $responseFull.items

# ================= MODIFICATION =================
Write-Host "Tentative de forçage des durées..." -ForegroundColor Yellow

$totalPlayTime = 0

foreach ($content in $playlistData.contents) {
    $content.contentDuration = 30
    $content.playTime = 30
    $content.hasDefaultPlayTime = $false
   

    if ($content.PSObject.Properties['isChanged']) { $content.isChanged = $true }
   
    if ($content.effects) {
        $content.effects.contentDuration = 30
    }
    $totalPlayTime += 30
}

$playlistData.playTime = $totalPlayTime
$playlistData.defaultContentDuration = 30

function Clean-MagicInfoObject($obj) {
    if ($obj -is [System.Collections.IDictionary] -or $obj -is [PSCustomObject]) {
        foreach ($prop in $obj.PSObject.Properties) {
            if ($prop.Value -eq "N") { $prop.Value = $false }
            elseif ($prop.Value -eq "Y") { $prop.Value = $true }
        }
    }
}
Clean-MagicInfoObject $playlistData

# ================= MISE À JOUR =================
$updateUrl = "$baseUrl/restapi/v2.0/cms/playlists/$playlistId"
$playlistData | ConvertTo-Json -Depth 10 | Write-Host
$updateBody = $playlistData | ConvertTo-Json -Depth 20
$utf8Body = [System.Text.Encoding]::UTF8.GetBytes($updateBody)

$updateResponse = Invoke-RestMethod -Uri $updateUrl `
    -Method PUT `
    -Headers @{ "api_key" = $token; "Accept" = "application/json" } `
    -ContentType "application/json;charset=UTF-8" `
    -Body $utf8Body

Write-Host "Réponse du serveur : $($updateResponse.status)" -ForegroundColor Green

# ================= VERIFICATION =================
Start-Sleep -Seconds 2

$check = Invoke-RestMethod -Uri $playlistDetailsUrl -Method GET -Headers @{ "api_key" = $token }
$check.items.contents | Select-Object contentName, contentDuration | Format-Table -AutoSize