Skip to content

Known Limitations and Issues of HyLabs

  • Last Updated Date: 03-April-2025
  • Release: HyWorks v3.4-SP2

Note

The known issues list is updated with every release. Listed below is the latest summary of issues.

Bug ID Description
40061 Permanent assignment lifespan reservation is not supported with multi-session Course reservation.
40060 Course self-study type reservations are not supported with multi-session course reservations.
39785 Getting the same desktop assigned with AVD client portal, even when user logs off with option "retain running course running desktop" unchecked.
39631 Clipboard, Driver Mapping, and printing-like features from connection profiles can not be controlled from HyWorks Management Console with AVD.
39629 Sending a warning message at the end of the reservation does not work with an AVD-integrated environment.
39628 HyWorks timeouts (defined in the connection profile) do not work in desktop sessions connected from the AVD portal.
39602 Desktop sessions connected from the AVD portal are not shown and managed on the HyWorks Controller Management Console.
39596 In a Cozur and Hotate-based environment, reserved VM deletion has failed on reservation expiry in some cases with the error "Specified host_id does not exist".
39583 VMs found not deleted from the Desktops VMs page of HyWorks Controller Management Console and respective session provider as well. The VMs were not shown in the Reserved VMs page of the HyLabs portal.
Workaround: VMs can be deleted from the provider and HyWorks database for clean-up.
39540 There is no default support for IP filtering in HyLabs, and thus if deployed VMs have multiple IP addresses, Controller may randomly pick any of the IP addresses.
36836 Multiple reservations failed to deploy because of heavy desktop refresh calls and database-related issues.
Future releases to improve performance and fix issues.
Workaround: Disabled desktop refresh call from HyWorks Controller Advance Settings: Flag name: "Refresh DVMs basic control".
36829 HyWorks does not filter out usable IP addresses for Gold Master connection and sends all IP addresses for connection and thus fails while connecting to gold master.
Workaround: Keep only a single IP address on the gold master.
35801 The feature of active directory group-based classification rules does not work in HyLabs.
34564 Replica and cloned VMs deployment settings should be kept logically to ensure the connectivity between the two.
Additionally, multi-datastore selection is not supported in HyLabs provisioning.
30040 The self-study deployment takes almost a minute per deployment. And if multiple self-studies from the same gold master are scheduled for the same time, it can take a good amount of time.
29670 In some cases, reservation deployments failed with errors related to database queries.
There are no direct workarounds available, but a periodic reboot of the HyWorks Controller and SQL servers can help in reducing functional failures.
29598 Modified "SMTP email sender" information is not used in Self-study reservation notifications but is being used by CSV operations notifications.
Workaround: Restart the HyWorks Reservation Management service.
28332 Reservation admin can set past date/ time while editing announcements.
Impact: No functional impact.
28299 A cancelled occurrence is not shown as struck through while editing a multi-schedule reservation.
Impact: No functional impact.
28290 RMS admin users may end up creating a multi-user one-time self-study at the same time when participants have already scheduled self-study.
Impact: It does not have a functional impact but has two reservations at the same time.
27993/
27248
Semi-colon ";" though mentioned as a multi-value separator, does not work.
Workaround: Admin has to have multiple entries of the records for processing.
27266 HyLabs(HyLite) is not supported with an authentication domain having the following configurations: authentication server - built-in, authorization server - built-in, and user credentials for remote server - user-provided credentials.
AD/LDAP-based authentication configurations should be used.
26938 Gold master trust relationship healing or reset is not available with HyLabs (HyWorks), and it has to be done manually.
25892 Only selecting the Gold Master OS type as CentOS or Ubuntu but keeping the "Dedicated Linux VM Pool" as unchecked creates the backend desktop pool of type Windows.
Recommendation: "Dedicated Linux VM Pool" should be kept as checked for Linux-based reservations.
25669 Course reservation redeploys the VMs, even when an administrator has deleted deployed VMs from the HyWorks Management Console and reduced the count of "Total VMs" from the reservation edit wizard.
25547 Edit course does not work with more than 7000 participants added in it.
14403 Reservation Redeployment is getting stuck when the snapshot setting is changed.
13393 Daily reservation is shown to run after one month after editing (4 schedules are there with daily recurrence even past dates). Workaround: Update the schedules again.
12973 Incorrect log is displayed for fix course self-study operation of powered off reserved VMs.
12970 Self-study - Events that are not required to be logged are also logged.
12884 No conflict occurs if Self-study is created simultaneously by the participant and admin.
10916 With ‘Reuse VMs..” disabled in reservation, course self-studies scheduled near to course reservation end-time may fail. Recommendation: Create self-studies after some time of course reservation end so that course reservation can be ended.
10891 CSV import fails for the Unicode file format. Workaround: Use other supported formats like UTF-8, Shift-JIS, etc.
10881 Machine keys in IIS configuration for HyWorks web application resets on upgrade and login from HyLite results in error page 'Server Error in '/' Application.' => An error occurred during a cryptographic operation. Workaround: HyWorks Management Console web application Machine keys should be backed-up before upgrade and should be restored after the upgrade.
10879 Schedule code accepts special character ` and Code validation error occurs if administrator continues to schedule reservation with provided code. Recommendation: The mentioned special character should not be used.
10877 No warning or information of associated course self-study is shown while redeploying course reservation.
10874 Course reservations with higher limits can be created if gold master is modified to reduce the previously allowed set limit.
Recommendation: Delete and recreate the Gold Master instead of modifying the existing one.
10868 An audit announcement is shown to the users, even when inactive. Workaround: Delete the audit announcement if not needed.
10806 Running reservation time can change after editing and reimporting CSV. Recommendation: Do not update running reservations using CSV.
10794 Unable to import users when realm name is mentioned in CSV.
10771 Users not part of any course will not be able to access self-study reservations made by the reservation admin for them. Workaround: Create a dummy course for such users.
10757 The Allow Connect option works only when the preparation time is higher than the Allow Connect Time. Reservations must be in running state to allow the connect function to work.
10716 Pool creation types get reset to 0 for RMS-created desktop pools -> Leaves existing desktop pool, replica, resource pool as unmanaged. Recommendation: RMS desktop pools should not be altered from HyWorks Management Console.
10676 The Course Self-Study reservation option should not be present in management for assistant users.
Recommendation: This is a duplicate option in the HyLabs screen for assistant users. If needed, the add reservation option itself can be disabled for assistant users from the HyWorks Management Console.
10643 If RMS admin and the Participant create Self-study for the conflicting time, the Participant is unable to create more reservations.
Recommendation: Delete one of the self-study reservations for the user.
10640 If the RMS admin creates one self-study for the participant, the participant's count for "Max Self-Studies Allowed" remains intact. Recommendation: Self-study should be initiated by end-users only, and thus, administrators should not create self-study reservations for them.
10603 On deleting the Reservation Pool manually, its resource pool does not get deleted from vCenter.
Recommendation: RMS desktop pools should not be altered from HyWorks Management Console.
10027 "Number of connections exceeded" error is displayed in the Schedule tab instead of Self-Study Reservation.
10026 CSV Import: The Reservation is getting added, even when self-study enabled has a duration set as 0.
Recommendation: The self-study duration should not be kept as 0 while being imported from CSV.
9044 MMC and RMS service config details should be restored post-upgrade.
Recommendation: Backups should be taken before the upgrade for smooth and faster restoration of configurations.
8854 Incorrect Japanese translation in the Deployment options dialog. Recommendation: Use Chrome or Firefox for administration.
8709 The course self-study is failing when "Assign network ready desktops" is enabled on the Gold master.
Recommendation: Keep the flag disabled in provisioning profiles.
8648 Reservations should be highlighted using some mechanism if they have some recommended deployment options pending.
8384 Admin, incharge can create self-study with same time as existing user self-study.
8192 The calendar should show all reservations assigned to the Participant/in-charge / assistant.
7976 Audio and Mic cannot be controlled from HyWorks Controller Connection Profiles in session from HyLite.
Workaround: Additional Command Line parameters can be used
7975 Course extensions by admin are not reflected on the calendar view, and hence, course self-study can be created by admin in an extended period of course reservation.
7962 RMS logs out the user session, though it has been disconnected from HyWorks Controller by the admin.
7959 In some cases, immediately after the system starts, the DVM agent may not get updated as powered-on due to failure in connecting to AccopsMQ.
7943 Updating an existing schedule shows conflicts with the expired schedule.
Workaround: Update the schedule and change the start date to today.
7880 On changing default reservation settings, changes are not reflected on running self-study reservation
7863 Are you sure you want to shut down the selected reservation? Confirm the action dialog box is not hidden and the page is stuck.
7850 Mail comes on the start event even when the reservation has failed.
7825 Importing .txt file via CSV Import results in Object reference error.
7814 Extension is allowed for course reservation schedules which results in conflicting of schedules of same reservation.
7805 The reservation status is not updated as failed when the creation of VMs fails during redeploy.
7803 Session change of connect is not updated if DVM Agent counters error like [#7802].
7789 Timezone Issues: Reservation creation may not work correctly when users are working from different timezones as HyLabs portal displays current time of client machine whereas reservation scheduling uses server time for calculations.
7786 [Gap/ Limitation for Kyoto] While creating self-study reservations, an extension of existing reservations is not considered. The participant can add reservations in conflicting schedule
7771 Refresh button is displayed for course default GM when only admin access flag is enabled
7693 Numbering by RMS is not being used for newly created VMs after deleting the VMs from the reservation.
7538 Session change events for lock and unlock are not generated; thus, the max concurrent connection count is un-managed with the Desktop concurrent connection check option as 1.
7522 The agent status is not displayed for cloned VMs on the reserved VMs wizard.
7518 GM Limits will not be applied to existing reservations schedules post-upgrade from v3.2 to v3.3.
7503 Keeping the End time of schedule1 and start time of schedule2 shows conflict, e.g. two schedules (schedule1 ending at 5:30 and schedule2 starting at 5:30) cannot be created. Workaround: Create schedule1 with end time as 5:29 or schedule2 with start date as 5:31.
7471 Deployment settings are not considered for all kinds of GM limits.
7445 Enter value less than 99999 validation message is not displayed for Max Active VMs field while adding gold master.
7257 RMS: In charge, able to remove himself from the course.
6336 Assistants can edit the incharge list in reservation.
6251 Disabling course self-study in course reservation settings after course self-study reservations creation does not show any error, and course self-studies are accessible.
6090 [GAP] An Object available through all applicable roles should be displayed for a user.
5495 Sometimes, even after logging out of the RMS portal, the next login with the user having a different role causes a mix-up of roles and presents an improper interface to the user.
4872 [Kyoto] The Reservation edit should show the redeploy settings as saved from Gold Master.
4840 The same CentOS and Ubuntu VDI gold master can be accessed by reservation admin, incharge, assistant.
4810 Computer account deletion from AD will fail if the provisioning profile has been modified to use a different domain user account.
4226 Connect button gets enabled even when reserved VMs are still in configuring state.
4216 Multi-Schedule reservation is not displayed properly in received mails as per in E-mail Notification Settings.
4101 Deleting participants from self-study reservations created by admin will come into effect only in the next schedule.