
Arknights Guide The November 1 maintenance (06:00–12:00 server time, forced client update) shipped seven exclusive modules, one limited module for Horn, four Paradox Simulations, and five operator records in a single patch (source: official maintenance notice, 2026-10-30). Nothing about the banner schedule changed, so this month is entirely about where your sanity goes. Below is the priority order, the cert decision, and the sanity split — with source labels on every number.
Applicable version: as of the 2026-11-01 update (Arknights has no version-number system; client 2.7.91)

What the November 1 patch actually contains
The patch is a forced update, which means a full client reinstall on mobile and the Hypergryph launcher on PC (source: official maintenance notice, 2026-10-30). Compensation is 5 Originite Prime, claimable within seven days of maintenance ending.
| Item | Result | Basis |
|---|---|---|
| Downtime | Nov 1, 06:00–12:00, forced update | Official notice 2026-10-30 |
| Compensation | 5 Originite Prime, 7 days | Same |
| Modules | 7 exclusive + 1 limited (Horn) | Same |
| Paradox Simulation | 4 operators: 溯光星源, Snow Hunter, 嘉辛塔, 裁度 | Same |
| Distinction store | From Nov 5, 04:00: Viviana and Shenlu | Same |
The two modules people will actually argue about
The seven exclusive modules go to Muelsyse (third), 溯光星源 (second), 凛御银灰, 松桐, 镜匠, 国度, and 奥尔佳. The single limited module goes to Horn.
Only two of those will generate real discussion: Muelsyse's third and Horn's limited. The other five are collection pieces — none of those operators are regulars in current high-difficulty clears, so unlocking tier one for the trait text is enough.
Why the timing matters
The 2026 Thank-You Celebration runs Nov 1 to Nov 22, 03:59, with the SideStory split into three stage groups opening Nov 1, Nov 8 (长冬初青), and Nov 15 (source: official event preview). Your sanity is competing between event stages and module farming for three weeks, which is why the split below matters more than usual.

Muelsyse's third module: why it ranks first
This is the only module in the batch that upgrades an operator you are probably already fielding. It does not open a new archetype, it pushes a long-standing high-difficulty support one notch further.
What it solves
Muelsyse's job is summon coverage and DP recovery. Her third module continues along that same line, which means you do not rebuild your squad, reposition anyone, or redo your rotation. Zero refit cost is why it wins on priority when resources are tight.
Check before you craft
Are you actually using her? If the last time you fielded Muelsyse was three months ago, this module is a codex entry. Module data blocks are scarce, and tier three requires all three stages. Ask yourself whether she is in your next high-difficulty plan. If the answer is no, stop.

Horn's limited module: who should craft it
The limited module is a different weight class from the exclusive ones. It is worth crafting, but only if your defender setup can actually use it.
Horn's condition
Horn is a ranged defender: she needs to survive and she needs to reach. The limited module gives her the part she lacks; the exact values should be read in-game, because the official notice does not publish them and I am not going to invent numbers here.
Order versus Muelsyse
My call is Muelsyse third > Horn limited. The reason is scope of change, not raw power: Muelsyse slots into an existing rotation untouched, while Horn usually drags platform placement and healing coverage with her. Smaller change, faster payoff.
The other five modules: pick by usage, not by tier list
溯光星源 second, 凛御银灰, 松桐, 镜匠, 国度, 奥尔佳. Sort them by "do I field this operator", not by community rankings.
溯光星源 second module
A second module normally continues the first one's direction. If you already use 溯光星源 in specific high-difficulty maps, craft it. If not, unlock tier one for the trait and move on.
The rest
国度 and 奥尔佳 have functional value in specific comps; 镜匠 and 松桐 are niche. The shared property of this group: crafting them is never wrong, but skipping them never blocks a stage either.

Paradox Simulation and operator records: the free Orundum
Direct answer to the question people actually ask: the Paradox Simulation rewards are claimed on the operator's file page, in the Paradox Simulation tab, and settle on clear. No mailbox trip needed.
Four simulations
溯光星源, Snow Hunter, 嘉辛塔, 裁度. At the standard 200 Orundum per clear, four stages come to 800 Orundum (check the in-game reward screen; source: in-game reward display). For anyone saving for a spark, 800 is real money.
Five operator records
国度, 夜半, 嘉辛塔, 裁度, PhonoR-0. Records are story content and their rewards should be read in-game. What is worth noting: 嘉辛塔 and 裁度 appear in both the record list and the Paradox list, which usually signals the developers pushing those two — watch the next banner.

The distinction store: should you buy Viviana
From Nov 5, 04:00, the Distinction store offers Viviana and Shenlu (source: official maintenance notice). This is not a new operator release; it is a cert rotation, so do not treat it as a substitute for a limited banner.
What Viviana is
Viviana is a six-star guard of the arts-fighter branch: her attacks deal arts damage, her first talent raises her arts damage while cutting physical and arts damage taken, and her skills include a charged multi-hit attack (source: PRTS operator data). The value of an arts fighter is that she both holds a lane and deals arts damage.
The 180-cert line
A six-star costs 180 distinctions (source: Distinction store rules). That is roughly the byproduct of three or four ten-pulls. The test is simple: who currently holds your arts-guard slot? If the answer is a four-star stopgap, buy. If the answer is an already-mastered six-star, skip and bank the certs.

Resource plan for November
| Resource | Send it to | Why |
|---|---|---|
| Module data blocks | Muelsyse third (tier 3) > Horn limited (tier 1 first) | Small refit cost, fast payoff |
| Sanity during the event | Event first-clear > module stages > regular mats | First-clear rewards are one-time |
| Orundum | Limited banners only | Limited operators never enter standard pools |
| Distinctions | Bank to 180, do not dribble on five-stars | 180 for a six-star beats 45 for a five-star |
The SideStory opens in three waves, with 长冬初青 arriving Nov 8 at 16:00 (source: official event preview). That leaves you a window from Nov 1 to Nov 8 where the event is half-open and sanity has slack — that window is exactly where the module stages belong.
Verdict by account type
New players (main story below chapter 7): skip everything. Modules are an endgame system. Push the story until you can farm materials reliably.
Mid-game (three to five masteries, high-difficulty clears incomplete): craft Muelsyse's third module only. What you lack is one team that clears, not another utility slot.
Veterans (consistent high-difficulty clears, spare data blocks): craft both Muelsyse third and Horn limited, then fill the rest by habit. Veterans gain from details, not from new faces.
FAQ
Do I have to craft Muelsyse's module first?
If you run summon comps, yes. Her third module slots into an existing rotation without changing anything else, so the value per block is the highest in this batch. If you never field her, skip it.
How far should I take Horn's limited module?
Tier one already changes the trait text; tier three is the full form (source: module system rules). If resources are tight, stop at tier one and revisit when a stage demands it.
Do Paradox Simulation rewards expire?
No. Paradox Simulation is permanent content and the clear reward is one-time (source: in-game stage description).
Viviana now or wait for the next six-star?
Depends on your arts-guard slot. If it is a stopgap, 180 certs for a six-star that holds a lane is fair value. If not, bank the certs — the rotation will come around.
Action list
- Claim the 5 Originite Prime within seven days of the Nov 1 update.
- Unlock Muelsyse's third module to whatever tier your blocks allow.
- Take Horn's limited module to tier one only, and validate it in a real stage first.
- Check the Distinction store after Nov 5, 04:00 and confirm both prices before buying.
- Clear all four Paradox Simulations before 长冬初青 opens on Nov 8 at 16:00.
Version-checked lists and material math like this get updated per patch over on GameHub's guide section (gghubs.com) — grab the latest revision when the next patch lands.