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Desktop upgrade workaround (#9194) 

Desktop upgrade known issue and workaround
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Usha Mandya 2019-08-02 15:58:25 +01:00 committed by GitHub
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docker-for-windows/release-notes.md
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@ -82,6 +82,27 @@ Docker Desktop Community 2.1.0.0 contains the following experimental features:
* When two services have a common exposed port, Docker Desktop exposes the available ports for the second service.
* Fixed the UI lock when changing the Kubernetes state.
### Known issues
Attempts to upgrade Docker Desktop to version 2.1.0.0 can fail with the error `value cannot be null`. To work around this issue:
1. Open the `settings.json` file located at `%APPDATA%\Docker`. For example, `C:\Users\USERNAME\AppData\Roaming\Docker\settings.json`.
2. Find the value for `dataFolder`.
```
...
"dataFolder": null,
...
```
3. Replace `null` with `""`.
```
...
"dataFolder": "",
...
```
4. Restart Docker Desktop for the settings to take effect.
### Docker Community Edition 2.0.0.3 2019-02-15
[Download](https://download.docker.com/win/stable/31259/Docker%20for%20Windows%20Installer.exe)