Troubleshooting AppStream 2.0 User Issues - Amazon AppStream 2.0

Troubleshooting AppStream 2.0 User Issues

The following are possible issues that might occur for your users when they use AppStream 2.0.

My users' AppStream 2.0 client installations fail, and they're getting a message stating that .NET Framework 4.6 is required.

When users install the AppStream 2.0 client, AppStream 2.0 also installs .NET Framework version 4.6.2, if that version or a later version is not already installed. If the PC on which the client is being installed is not connected to the internet, .NET Framework can't be installed. In this case, a message prompts users to install .NET Framework version 4.6 manually. However, when users choose Install, an error message is displayed stating that the installation failed. Users are then prompted to try installing the latest version of the .NET Framework manually. When they choose Close, they exit the installation.

To resolve this issue, users must establish an internet connection from the PC on which they plan to install the client, and then download and install .NET Framework version 4.6.2 or later on the same PC. For a list of the .NET Framework versions available for download, see Download .NET Framework.

Note

Users who have version 1.1.156 of the AppStream 2.0 client installed must have .NET Framework version 4.7.2 or later installed on the same PC.

My users' USB driver installations fail when they install the AppStream 2.0 client, and now they can't use their USB devices with AppStream 2.0.

When users install the AppStream 2.0 client, they choose whether to install the AppStream 2.0 USB driver. The driver is required to use USB devices with applications streamed through AppStream 2.0. However, the USB driver installation fails if both of the following occur:

  • The root certificate used to sign the AppStreamUsbDriver.exe file is not present in the Windows certificate store.

  • The PC on which the client is being installed is not connected to the internet.

In this case, the certificate for the Amazon AppStream USB driver can't be validated, and an error message notifies users that the USB driver installation failed. When users choose OK, the AppStream 2.0 client installation is completed without the USB driver. Although users can still use the AppStream 2.0 client for application streaming, their USB devices won't work with applications streamed through AppStream 2.0.

To resolve this issue, users must establish an internet connection from the PC on which they plan to install the AppStream 2.0 client, and reinstall the client.

My AppStream 2.0 client users are getting disconnected from their AppStream 2.0 session after every 60 minutes.

If you have configured identity federation using SAML 2.0 for access to AppStream 2.0, depending on your identity provider (IdP), you may need to configure the information that the IdP passes as SAML attributes to AWS as part of the authentication response. This includes configuring the Attribute element with the SessionDuration attribute set to https://aws.amazon.com/SAML/Attributes/SessionDuration.

SessionDuration specifies the maximum amount of time that a federated streaming session for a user can remain active before reauthentication is required. Although SessionDuration is an optional attribute, we recommend that you include it in the SAML authentication response. If you do not specify this attribute, the session duration is set to a default value of 60 minutes.

To resolve this issue, configure your SAML-compatible IdP to include the SessionDuration value in the SAML authentication response, and set the value as required. For more information, see Step 5: Create Assertions for the SAML Authentication Response.

Note

If your users access their streaming applications in AppStream 2.0 by using the AppStream 2.0 client, their sessions are disconnected after their session duration expires. If your users access their streaming applications in AppStream 2.0 by using a web browser, after the users' session duration expires and they refresh their browser page, their sessions are disconnected.

My users can’t copy and paste between their local device and their streaming session.

AppStream 2.0 takes advantage of the W3C specification for enabling asynchronous clipboard operations in web applications. This enables users to copy and paste content between their local device and their streaming session in the same ways that they copy and paste between applications on their local device, including using keyboard shortcuts.

The only browser that currently supports the W3C asynchronous clipboard specification is Google Chrome version 66 or later, which supports copying and pasting only for text. For all other browsers, users can use the clipboard feature in the AppStream 2.0 web portal, which provides a dialog box for copying or pasting text.

If your users run into issues using the clipboard during their streaming sessions, you can provide them with the following information:

  • I’m using Chrome version 66 or later, and keyboard shortcuts aren’t working.

    Chrome displays a prompt for you to choose whether to allow AppStream 2.0 to access content copied to the clipboard. Choose Allow to enable pasting to your remote session. If you’re copying text from your remote session to your local device, both the Chrome application and the tab containing your streaming session must stay in focus on your local device long enough for the text to be copied from your streaming session. Small amounts of text should be copied almost immediately, but for large amounts of text, you might need to wait 1 to 2 seconds before switching away from Chrome or from the tab containing your streaming session. The time required to copy the text varies based on network conditions.

  • Copying and pasting doesn’t work when I try to copy and paste a large amount of text.

    AppStream 2.0 has a 2 MB limit for the amount of text that you can copy and paste between your local device and your streaming session. If you try to copy more than 2 MB, no text is copied. This limit doesn’t apply if you try to copy and paste text between applications on your local device or between applications in your streaming session. If you need to copy or paste text more than 2 MB between your local device and your streaming session, you can divide it into smaller chunks or upload it as a file instead.

  • I’m using the AppStream 2.0 web portal clipboard feature to paste text to my streaming session and it’s not working.

    In some cases, after you paste text into the clipboard dialog box and the dialog box closes, nothing happens when you try to use keyboard shortcuts to paste the text in your streaming session. This issue occurs because when the clipboard dialog box appears, it takes the focus away from your streaming application. After the dialog box closes, the focus might not automatically return to your streaming application. Clicking your streaming application should return the focus to it and enable you to use keyboard shortcuts to paste your text into your streaming session.

Some keyboard shortcuts aren’t working for users during their streaming sessions.

The following keyboard shortcuts work on users' local computers, but are not passed to AppStream 2.0 streaming sessions:

Windows:

  • Win+L

  • Ctrl+Alt+Del

Mac:

  • Ctrl+F3

  • All shortcuts that use Alt or Option key combinations

This issue is due to the following limitations on users’ local computers:

  • The keyboard shortcuts are filtered by the operating system that is running on users’ local computers and not propagated to the browsers on which users are accessing AppStream 2.0. This behavior applies to the Windows Win+L and Ctrl+Alt+Del keyboard shortcuts and Mac Ctrl+F3 keyboard shortcut.

  • When used with web applications, some keyboard shortcuts are filtered by the browser and don’t generate an event for the web applications. As a result, the web applications can’t respond to the keyboard shortcuts typed by users.

  • The keyboard shortcuts are translated by the browser before a keyboard event is generated and so are not translated correctly. For example, Alt key combinations and Option key combinations on Mac computers are translated as if they are Alt Graph key combinations on Windows. When this occurs, the results are not as the users intend when they use these key combinations.

My users' drawing tablets are not working with the streaming applications I deployed.

If your users' drawing tablets are not working with streaming applications, make sure that you meet the requirements and understand additional considerations for enabling this feature. Following are the requirements and considerations for enabling your users to use drawing tablets during AppStream 2.0 streaming sessions.

Note

Drawing tablets are supported for users who access AppStream 2.0 by using the AppStream 2.0 client, or through a supported web browser.

  • To enable your users to use this feature, you must configure your AppStream 2.0 fleet to use an image that runs Windows Server 2019.

  • To use this feature, users must access AppStream 2.0 by using the AppStream 2.0 client, or through the Google Chrome or Mozilla Firefox browsers only.

  • Streaming applications must support Windows Ink technology. For more information, see Pen interactions and Windows Ink in Windows apps.

  • Some applications, such GIMP, must detect drawing tablets on the streaming instance to support pressure sensitivity. If this is the case, your users must use the AppStream 2.0 client to access AppStream 2.0 and stream these applications. In addition, you must qualify your users' drawing tablets, and users must share their drawing tablets with AppStream 2.0 every time they start a new streaming session.

  • This feature is not supported on Chromebooks.

The Japanese language input method doesn't work for my users during their streaming sessions

To enable your users to use the Japanese language input method during their AppStream 2.0 streaming sessions, do the following:

  • Configure your fleet to use the Japanese input method. To do so, enable the Japanese input method on your image builder when you create an image, and then configure your fleet to use the image. For more information, see Specify a Default Input Method. Doing so enables AppStream 2.0 to automatically configure your image to use a Japanese keyboard. For more information, see Japanese Keyboards.

  • Ensure that the Japanese input method is also enabled on the user's local computer.

If the fleet instance and the user’s local computer don't use the same language input method, the mismatch might result in unexpected keyboard inputs on the fleet instance during the user’s streaming sessions. For example, if the fleet instance uses the Japanese input method and the user’s local computer uses the English input method, during a streaming session, the local computer will send keys to the fleet instance that have different key mappings than the fleet instance.

To verify whether the Japanese input method is enabled for a fleet instance, enable the Desktop stream view for the fleet. For more information, see Step 6 in Create a Fleet.

Windows Keyboard Shortcuts

Following are Windows keyboard shortcuts for switching Japanese input modes and for Japanese conversions. For these keyboard shortcuts to work, the AppStream 2.0 streaming session must be active.

Windows keyboard shortcuts for switching Japanese input modes

Keyboard shortcut Description

半角/全角/漢字

(Hankaku/Zenkaku/Kanji)

Or Alt+`

Switches the input mode between alphanumeric and Japanese mode

無変換

(Muhenkan)

Converts characters to Hiragana, full-width Katakana, and half-width Katakana in sequence

カタカナ/ひらがな/ローマ字

(Katakana/Hiragana/Romaji)

Changes the input mode to Hiragana

Shift+カタカナ/ひらがな/ローマ字

(Katakana/Hiragana/Romaji)

Changes the input mode to Katakana

Alt+カタカナ/ひらがな/ローマ字

(Katakana/Hiragana/Romaji)

Switches the input mode between Japanese Romaji and Japanese Kana

Windows keyboard shortcuts for Japanese conversions

Keyboard shortcut Description

変換 (Henkan) + Space

Lists conversion options

F6

Converts to Hiragana

F7

Converts to full-width Katakana

F8

Converts to half-width Katakana

F9

Converts to full-width Romaji

F10

Converts to half-width Romaji

Mac Keyboard Shortcuts

For information about Mac keyboard shortcuts for switching Japanese input methods and for Japanese conversions, see the following articles in the Mac Support documentation.

Note

Because AppStream 2.0 streaming sessions run on Windows instances, Mac users might experience different key mappings.

My user sees an error about reaching the max number of streaming sessions when they try to launch an application from the application catalog.

With AppStream 2.0 Elastic fleets, you specify a maximum number of users that can stream concurrently using the max concurrency parameter. Any user that tries to stream beyond that value receives this error. To resolve this issue, you can increase the maximum number of concurrent streams, or advise your user to wait for another user to complete their streaming session.

Note

You might need to request a limit increase to increase the instance type and size limit.

My user sees a black screen or the desktop, and their application doesn’t launch on an Elastic fleet. No error appears.

This can happen if the application launch path is incorrect, and AppStream 2.0 can't launch the application. You can validate the application launch path by using Desktop View on the fleet to navigate the root volume. Validate that the application executable exists at the path specified.

If you're not able to find the app block's VHD or setup script on the streaming instance, AppStream 2.0 might not have been able to download them from the S3 bucket. Validate that the VPC you specified has access to S3. For more information, see Using Amazon S3 VPC Endpoints for AppStream 2.0 Features.