PowerShell Teams脚本异常：关PS时Teams随关且运行报错

问题现象 #

使用以下PowerShell脚本清理Teams缓存并启动程序，此前运行正常，当前出现两个异常：

• 关闭PowerShell窗口时，Teams进程也随之终止
• 关闭PowerShell前会弹出报错信息
  Teams为Citrix VDI/VDA环境下按微软VDI部署建议安装的HDX优化版本。

原脚本内容：

# start Teams
# Start-Process -File "C:\Program Files (x86)\Microsoft\Teams\current\Teams.exe" -ArgumentList '--processStart "Teams.exe"'
# Write-Host "Teams Process Sucessfully Started" 
# Start-Sleep -Seconds 5


#Stop Teams process 
Get-Process -ProcessName Teams -ErrorAction SilentlyContinue | Stop-Process -Force 
Start-Sleep -Seconds 3
Write-Host "Teams Process Sucessfully Stopped" 

#Clear Team Cache
try{
#  Get-ChildItem -Path $env:APPDATA"Microsoft\Teams" | Remove-Item -Recurse -ErrorAction SilentlyContinue # Clear.all
Get-ChildItem -Path $env:APPDATA"Microsoft\Teams\blob_storage" | Remove-Item -Recurse -ErrorAction SilentlyContinue
Get-ChildItem -Path $env:APPDATA"Microsoft\Teams\databases" | Remove-Item -Recurse -ErrorAction SilentlyContinue
Get-ChildItem -Path $env:APPDATA"Microsoft\Teams\cache" | Remove-Item -Recurse -ErrorAction SilentlyContinue
Get-ChildItem -Path $env:APPDATA"Microsoft\Teams\gpucache" | Remove-Item -Recurse -ErrorAction SilentlyContinue
Get-ChildItem -Path $env:APPDATA"Microsoft\Teams\Indexeddb" | Remove-Item -Recurse -ErrorAction SilentlyContinue
Get-ChildItem -Path $env:APPDATA"Microsoft\Teams\Local Storage" | Remove-Item -Recurse -ErrorAction SilentlyContinue
Get-ChildItem -Path $env:APPDATA"Microsoft\Teams\tmp" | Remove-Item -Recurse -ErrorAction SilentlyContinue
Write-Host "Teams Cache Cleaned" 
}catch{
echo $_ 
}

#Remove Credential from Credential manager
$credential = cmdkey /list | ForEach-Object{if($_ -like "*Target:*" -and $_ -like "*msTeams*"){cmdkey /del:($_ -replace " ","" -replace "Target:","")}}

#Remove Reg.Key
$Regkeypath= "HKCU:\Software\Microsoft\Office\Teams" 
$value = (Get-ItemProperty $Regkeypath).HomeUserUpn -eq $null
If ($value -eq $False) 
{ 
  Remove-ItemProperty -Path "HKCU:\Software\Microsoft\Office\Teams" -Name "HomeUserUpn"
  Write-Host "The registry value Sucessfully removed" 
} 
Else { Write-Host "The registry value does not exist"}

#Get Desktop-config.json
$TeamsFolders = "$env:APPDATA\Microsoft\Teams"
try{
    $SourceDesktopConfigFile = "$TeamsFolders\desktop-config.json"
    $desktopConfig = (Get-Content -Path $SourceDesktopConfigFile | ConvertFrom-Json)
}
catch{ Write-Host "Failed to open Desktop-config.json" }

#Overwrite the desktop-config.json
Write-Host "Modify desktop-Config.Json"
try{
    $desktopConfig.isLoggedOut = $true
    $desktopConfig.upnWindowUserUpn =""; #The email used to sign in | also: whoami /upn
    $desktopConfig.userUpn ="";
    $desktopConfig.userOid ="";
    $desktopConfig.userTid = "";
    $desktopConfig.homeTenantId ="";
    $desktopConfig.webAccountId="";
    $desktopConfig | ConvertTo-Json -Compress | Set-Content -Path $SourceDesktopConfigFile -Force
}
catch{ Write-Host "Failed to overwrite desktop-config.json" }
Write-Host "Modify desktop-Config.Json - Finished"

#Delete the Cookies file. This is a fix for when the joining as anonymous, and prevents the last used guest name from being reused.
Get-ChildItem "$TeamsFolders\Cookies" | Remove-Item

#Lastly delete the storage.json, this corrects some error that MSTeams otherwise would have when logging in again.
Get-ChildItem "$TeamsFolders\storage.json" | Remove-Item


#Try to remove the Link School/Work account if there was one. It can be created if the first time you sign in, the user all
# $LocalPackagesFolder ="$env:LOCALAPPDATA\Packages"
# $AADBrokerFolder = Get-ChildItem -Path $LocalPackagesFolder -Recurse -Include "Microsoft.AAD.BrokerPlugin_*";
# $AADBrokerFolder = $AADBrokerFolder[0];
# Get-ChildItem "$AADBrokerFolder\AC\TokenBroker\Accounts" | Remove-Item -Recurse -Force
# Start-Sleep -Seconds 5

# start Teams
Start-Process -File "C:\Program Files (x86)\Microsoft\Teams\current\Teams.exe" -ArgumentList '--processStart "Teams.exe"'
# "$($env:USERProfile)\AppData\Local\Microsoft\Teams\Update.exe" 
Start-Sleep -Seconds 3
Write-Host "Teams Process Sucessfully Started" 

# Stop for testpurposes
pause

问题原因及修复方案 #

1. 关闭PowerShell时Teams随之关闭的修复 #

原因：直接启动Teams.exe会让进程继承PowerShell的控制台会话，父进程关闭时会连带终止子进程。VDI环境下Teams官方推荐通过Update.exe启动，而非直接调用Teams.exe。

修复：替换启动命令为VDI专属方式，确保Teams进程脱离PowerShell控制台控制：

Start-Process -FilePath "$env:LOCALAPPDATA\Microsoft\Teams\Update.exe" -ArgumentList "--processStart Teams.exe" -NoNewWindow

2. 关闭PowerShell前报错的修复 #

原因：脚本未处理多种错误场景，比如注册表项不存在时Get-ItemProperty会抛出错误、文件被占用时删除操作失败等。

修复：

• 给注册表操作添加路径检测，避免项不存在时报错
• 文件删除前先检查路径存在性，增强错误忽略逻辑
• 移除测试用的pause命令（生产环境可省略）

修改后的完整脚本 #

# Stop Teams process 
Get-Process -ProcessName Teams -ErrorAction SilentlyContinue | Stop-Process -Force 
Start-Sleep -Seconds 3
Write-Host "Teams Process Successfully Stopped" 

# Clear Team Cache
try{
    $cachePaths = @(
        "$env:APPDATA\Microsoft\Teams\blob_storage",
        "$env:APPDATA\Microsoft\Teams\databases",
        "$env:APPDATA\Microsoft\Teams\cache",
        "$env:APPDATA\Microsoft\Teams\gpucache",
        "$env:APPDATA\Microsoft\Teams\Indexeddb",
        "$env:APPDATA\Microsoft\Teams\Local Storage",
        "$env:APPDATA\Microsoft\Teams\tmp"
    )
    foreach ($path in $cachePaths) {
        if (Test-Path $path) {
            Get-ChildItem -Path $path -Recurse -ErrorAction SilentlyContinue | Remove-Item -Recurse -Force -ErrorAction SilentlyContinue
        }
    }
    Write-Host "Teams Cache Cleaned" 
}
catch{
    Write-Host "Cache cleanup error: $_"
}

# Remove Credential from Credential manager
cmdkey /list | ForEach-Object {
    if ($_ -match "Target:\s*(.*msTeams.*)") {
        cmdkey /del:$($matches[1].Trim())
    }
}

# Remove Reg.Key
$Regkeypath = "HKCU:\Software\Microsoft\Office\Teams" 
if (Test-Path $Regkeypath) {
    $homeUserUpn = Get-ItemProperty -Path $Regkeypath -Name HomeUserUpn -ErrorAction SilentlyContinue
    if ($homeUserUpn) {
        Remove-ItemProperty -Path $Regkeypath -Name HomeUserUpn -ErrorAction SilentlyContinue
        Write-Host "The registry value successfully removed" 
    }
    else {
        Write-Host "The registry value does not exist"
    }
}
else {
    Write-Host "Registry path does not exist"
}

# Modify desktop-config.json
$TeamsFolders = "$env:APPDATA\Microsoft\Teams"
$SourceDesktopConfigFile = "$TeamsFolders\desktop-config.json"
try{
    if (Test-Path $SourceDesktopConfigFile) {
        $desktopConfig = Get-Content -Path $SourceDesktopConfigFile -Raw | ConvertFrom-Json
        $desktopConfig.isLoggedOut = $true
        $desktopConfig.upnWindowUserUpn = ""
        $desktopConfig.userUpn = ""
        $desktopConfig.userOid = ""
        $desktopConfig.userTid = ""
        $desktopConfig.homeTenantId = ""
        $desktopConfig.webAccountId = ""
        $desktopConfig | ConvertTo-Json -Compress | Set-Content -Path $SourceDesktopConfigFile -Force
        Write-Host "Modify desktop-Config.Json - Finished"
    }
    else {
        Write-Host "desktop-config.json not found"
    }
}
catch{ 
    Write-Host "Failed to modify desktop-config.json: $_" 
}

# Delete Cookies and storage.json files
$filesToDelete = @(
    "$TeamsFolders\Cookies",
    "$TeamsFolders\storage.json"
)
foreach ($file in $filesToDelete) {
    if (Test-Path $file) {
        Remove-Item -Path $file -Force -ErrorAction SilentlyContinue
    }
}

# Start Teams using VDI-recommended method
if (Test-Path "$env:LOCALAPPDATA\Microsoft\Teams\Update.exe") {
    Start-Process -FilePath "$env:LOCALAPPDATA\Microsoft\Teams\Update.exe" -ArgumentList "--processStart Teams.exe" -NoNewWindow
    Start-Sleep -Seconds 3
    Write-Host "Teams Process Successfully Started"
}
else {
    Write-Host "Update.exe not found, falling back to direct Teams.exe launch"
    Start-Process -File "C:\Program Files (x86)\Microsoft\Teams\current\Teams.exe" -ArgumentList '--processStart "Teams.exe"' -NoNewWindow
    Start-Sleep -Seconds 3
    Write-Host "Teams Process Successfully Started"
}

内容的提问来源于stack exchange，提问作者StraussKrone