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Developers (Main Products) Forum
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Problems and bugs
Discuss error messages and Optimizely CMS behaviors and features.
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Replies
Last Post
CMS shows incorrect time for users last login date
Joonas Kajava
02 February 2026, 9:49:23
5
15 February 2026, 20:06:29
Keshav Dave
ContentRepository.Save throws EpiserverCancelException with empty reason when creating page via addon
Jakob Lystbæk
11 February 2026, 14:36:57
1
12 February 2026, 7:32:00
Eric Herlitz
Post-move Exception: "Cannot create a command without an existing connection"
velijaa
15 July 2025, 10:55:22
2
04 February 2026, 13:28:35
Frederik
Custom Admin Menu Item with Multiple Routes
Daniel Copping
31 July 2024, 7:18:54
cms.12.29.x
3
08 January 2026, 11:32:21
Karol Berezicki
Application crashes with SqlNullValueException when loading the CMS UI due to NULL values in the synchronized users table.
hct
26 November 2025, 15:11:20
5
18 December 2025, 9:28:00
QuirijnLangedijk
CMS 12+Content Graph: JSON casing mismatch breaks UI in add-ons (Forms, Admin/Contacts/Organization) — suspected formatter conflict with System.Text.
Alexander Seel
16 December 2025, 13:20:21
2
17 December 2025, 8:44:07
Eric Herlitz
Forms Description message referencing to field with wrong name
Jonas Boman
22 October 2025, 13:17:03
2
26 November 2025, 8:40:22
Sunil
SelectOne Fields Fail To Display Numbers As Strings In Editor
sammyender
13 November 2025, 13:14:04
1
26 November 2025, 8:28:08
Sunil
CMS Dialog cannot be resized (Opti Forms > Create email template dialog)
Sameena Khan
07 November 2025, 21:20:22
3
10 November 2025, 14:56:16
Eric Herlitz
CMS.Core depends on a vulnerable MimeKit version
huseyinerdinc
15 October 2025, 14:18:29
1
15 October 2025, 14:50:23
Quan Mai
Groups and permissions not working as I expect
Matt Pallatt
26 August 2025, 8:27:51
3
26 August 2025, 13:39:24
MilosR
Audience/Personalized group: Only one block per personalized group?
Alexander Wagner
25 August 2025, 11:12:50
2
26 August 2025, 10:49:42
Alexander Wagner
ThumbnailManager fails on concurrent uploads – Azure.RequestFailedException not handled
velijaa
15 July 2025, 10:27:00
3
22 August 2025, 15:41:47
Quan Mai
Asset no longer sorting alpha order
Leslie R
07 August 2025, 21:40:45
3
22 August 2025, 13:14:56
Leslie R
CommerceConnect not showing all SerializableCarts and orders in case you have a lot of Markets
Roland Voskamp
14 August 2025, 14:44:23
2
18 August 2025, 11:49:08
Roland Voskamp
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