> For the complete documentation index, see [llms.txt](https://docs.lithnet.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lithnet.io/mim-sync-service/usage/cmdlet-reference/clear-runhistory.md).

# Clear-RunHistory

## Synopsis

Clears the run history from the synchronization service

## Syntax

```
Clear-RunHistory [[-BeforeDate] <Nullable`1[DateTime]>] [<CommonParameters>]

Clear-RunHistory [[-DaysToKeep] <Nullable`1[Int32]>] [<CommonParameters>]
```

## Description

The [Clear-RunHistory](/mim-sync-service/usage/cmdlet-reference/clear-runhistory.md) cmdlet allows you to clear the Synchronization Service's run history. You can clear all runs, all runs older than a specified date, or all runs older than a specified number of days

## Parameters

#### -DaysToKeep \<Nullable\`1\[Int32]>

Specifies the number of days of run history to keep

|                             |       |
| --------------------------- | ----- |
| Required?                   | false |
| Position?                   | 1     |
| Default value               |       |
| Accept pipeline input?      | false |
| Accept wildcard characters? | false |

#### -BeforeDate \<Nullable\`1\[DateTime]>

Specifies the date of the latest run that will be deleted from the server. Runs after this specified date and time are preserved

|                             |       |
| --------------------------- | ----- |
| Required?                   | false |
| Position?                   | 1     |
| Default value               |       |
| Accept pipeline input?      | false |
| Accept wildcard characters? | false |

#### \<CommonParameters>

This cmdlet supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, WarningVariable, OutBuffer, PipelineVariable, and OutVariable. For more information, see [about\_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).

## Examples

### Clear the entire run history

```
PS C:\> Clear-RunHistory
```

Using the Clear-RunHistory cmdlet with no parameters will clear the entire run history from the server

### Clear runs older than specified number of days

```
PS C:\> Clear-RunHistory -DaysToKeep 2
```

Clears all items in the run history older than 2 days

### Clears run history older than the specified date

```
PS C:\> Clear-RunHistory "2016-01-01"
```

Clears all runs older than January 1, 2016


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