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Resource Central - Limitations and known issues

White screen in Com Add-in

Opening the Com Add-in Resource Finder or MyMeetings can result in a white screen. 

The issue is caused by the browser engine Webview2 of Microsoft that is used by the Com Add-in. 

The issue can be triggered by a rescaling of the screen or when opened after the computer returns from sleep-mode

Workaround: Restart Outlook. 

Found in: All released Com Add-ins on Windows 10. In Windows 11 the bug is fixed.

Status:  A bug has been raised to Microsoft to fix this issue on Windows 10.

Order email button not working

The order form send button in the email notification link is not working if External authentication is not enabled

Workaround: Patch is available and can be gotten by contacting Add-On Products Support. 

Found in: 4.3 Service Release 3

Status:  Bug will be fixed in Hotfix 10

License issue

Resource Central can loss the license key due to an issue in the login screen of Resource Central Backend. Issue can occur from Hotfix 6 to 8 and can be seen in e.g. Resource Central emails with text about an invalid license.

Workaround: Patch is available for Hot fix 8 and can be gotten by contacting Add-On Products Support. Quick temporary fix can also be to upload the license again.

Status:  Bug will be fixed in Hotfix 9

RF COM Add-in 4.1 64 bit crashes after Sleep

COM Add-in 4.1 64 bit can after the computer returns from Sleep mode freeze the opened windows when opening ResourceFinder

Workaround: Restart Outlook

Status:  Bug reported to Microsoft as the issue is in Edge Webview 2 browser engine

SSO is disabled by a clearing of cache issue

4.2 Hotfix 1 introduced a bug that the external authentication in Resource Central is disabled over time due to a clearing of cache issue.

Status:  Available in RC 4.2 Hotfix 2

Reference: 284473

SQL Server Transaction Log issue

4.2 Service Release 1 introduced a possibility for an unfortunate side effect that a service can generate so much traffic that the transactions logs grow beyond server capacity and if not monitored can stop all SQL operations.

Status:  A patch has been made available for RC 4.2 SR1

Reference: 278030

Outlook Add-in – fails to load resources 

Resources are not listed in Outlook Add-in that keeps loading

Workaround:  For Outlook on the web and 2019 versions upgrade to a version of Outlook 16.0.12827.xxxxx or above. For Outlook 2016 contact support for assistance on patch files

Status: Available in 4.1 Hotfix 6 

Reference: 237721

Outlook on the web Add-in – Add-in states that it is not available

When opening Outlook Add-in on Outlook on the web, it can state that The Outlook Add-in is not available on this platform.

Cause: Bug in Microsoft API where API version number can be returned blank randomly

Workaround:  Contact support for assistance on patch files

Status: Available in 4.1 Hotfix 6 

Reference: 240023

Permissions - Deleted Groups changes are not returned (On-Premise)

Using RC permissions with groups on On-premise environments, Push notifications from Active Directory do not send notifications when deleting a group. 

This will result in wrong permission settings on Resources in Resource Finder

Workaround: Set up periodical Full Sync in RealTime Service to synchronize the groups correctly

Status: Analyzing for an alternative solution

Forms - Not storing updates in forms

Updating Forms will not have an effect on the backend order form used by service providers

Result: Service Provider cannot change an order as the buttons "Update" and "Update and send email" will not respond.

Workaround: Do not do change in order forms until the next release. If you already have an issue with your forms on Hotfix 1 please do contact Support for assistance. We will decommission Resource Central 4.1 Hotfix 1 to make sure that no customer will face this issue.

Status: Fixed in 4.1 Service Release 3.

Installation issue - Malformed Html in Forms

The issue can occur if Resource Central contains Forms with malformed Html as a result of manual changes directly in the source code of the form. This impacts the upgrade process to Hotfix 1. It is a problem with older forms created on Resource Central 3.8 or older. In the older HTML, editor end tags were not automatically inserted if forgotten by the person changing the HTML. This can happen by using other editors not making sure, that the syntax is well-formed with end tags and the HTML is then saved from the source code view.

Workaround: When having Forms with malformed HTML a way to ensure consistency is to go to each form in the 4.0 version before upgrading to 4.1 HF1 and press save on each form. If you are upgrading from e.g. 3.7 or 3.8, first install 4.0 and save the forms, and then upgrade to Hotfix 1. 4.0 Hotfix 7 can be downloaded from the website or maintenance portal. 

Status: Available in 4.1 Hotfix 1 Package 

Error displayed in Sync Exch. Status

An error is show in Sync Exch. Status column in Back end Resource View after upgrade of Resource Central and Realtime Service. When you upgrade an existing Resource Central installation to 4.1 Service Release 1, then a new service (Resource Central Permission Service) is added. This service does not have a valid configuration by default, and lacks the DB connection set for the existing RC installation.

Workaround: The solution is to open Resource Central configuration tool, and configure the db connection for this service

Status: Solved in Service Release 2.

Resource info not moved to meeting invite

In RC 4.0 Hotfix 5 the parameter meetinginvite.resourceinfo.enable is defect so resource information is not transferred to the meeting invite body.

Workaround:  Install the file resourceinfo.asmx in into "C:\inetpub\wwwroot\ResourceCentral\Webservice". The file can be downloaded from

Status: Fixed in RC4.0 Hotfix 6, RC4.1 Service Release 1.

Reference: #179849

Upgrade issue: Affecting customers utilizing SQL 2012 and SQL 2012R2

When upgrading to the latest build HF4, customers using the above SQL platforms will experience the below issue.

“Error: Incorrect syntax near 'INDEX'. If this is intended as a part of a table hint, A WITH keyword and parenthesis are now required.”

The issue is not critical as this is only an index cannot be created. Its purpose is to improve the performance of the solution.

Status: Solved in Version 4.0.0009.0024 Hotfix 4 update. 

Change reservation email on new order

For tentative appointments, RealTime Service sometimes makes a double push notification from Exchange to Resource Central. This results in an extra changed reservation to organizer and service provider when making a new order or when Tentative.sofflow=1 and organizer does not include a shared order in the new order.

Workaround: None

Status: Solved in 4.2 RTM

Reference: #170176

Resource Finder - Out of Memory error

For some On-Premise users on Outlook 2013 & 2016 32 bit, Resource Finder is terminated before it opens. A warning on an "Out of memory" error is presented either as a dialogue or in the event viewer.

Status: Solved. Improvements to the error is released in Add-in version 4.00.0137. Over a longer period, the Add-in has been test at different customers, who experienced this error. The error has not occurred again.

Reference: #149840, 161268, 161336

Buffer time on Virtual resources not working

Buffer time on Virtual resources does not work in RC4.0

Workaround: None

Status: Solved in RC4.0 Hotfix 3

Reference: #150440

Not able to use SSO (Single sign-on)

Using Active Directory authentication for automatic login to Resource Central backend does currently not work.

Workaround: None

Status: Solved in RC4.0 Service Release 3

Reference: #118431

Customized reports

Customers with such reports can subscribe to our Custom Report Maintenance Program. A subscription guarantee that the reports by default are validated to work on newer Resource Central service releases and major upgrades.

Customers without a subscription are welcome to contact Add-On products support for further information or to order an analysis of your reports.

Booking of Virtual Resources or Shared Order Form with Exchange delegate is not supported for multiple resources.

Having a virtual resource where one or more of the child resources have an Exchange delegate is not supported.

Status: Solved in 3.8 SR2 and 4.0 SR2

Reference: #68943.





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