Does Porofessor Work With Riot Vanguard in 2026?
Riot began blocking game memory access for third-party apps on October 6, 2026. Here's exactly how that affects Porofessor, Blitz, and other LoL overlays.
Buildzcrank Team Published
Porofessor still works after Riot’s Vanguard update, as long as it keeps reading match data the way it currently does: through Overwolf’s Game Events Provider and Riot’s own APIs, not through a direct memory read. Starting October 6, 2026, Riot began proactively blocking game memory access by default for unknown third-party applications across League of Legends, TFT, and VALORANT, and nothing in Riot’s own announcement singles out Porofessor, Blitz, or Mobalytics as affected.
That still leaves a real question for anyone who installs these tools: what exactly did Riot block, is a Vanguard-approved overlay a different category from a “memory reader,” and what should you do if a feature in your companion app disappears next week. Here’s what Riot has actually said, dated and sourced, instead of a prediction about what “probably” happens to third-party apps.
What Riot’s October 6, 2026 Memory-Access Lockdown Actually Does
Riot’s own support article, “Game memory access removed for third-party apps,” states that starting October 6, 2026, the company began proactively preventing game memory access by default for all unknown third-party applications, across League of Legends, TFT, and VALORANT. The reasoning Riot gives is specific: advances in AI-assisted reverse engineering have grown the pool of people capable of building cheats and bot farms faster than manual enforcement can keep up.
The change isn’t a single on/off switch for every app. Riot splits it into two groups:
- Unknown applications: blocked from reading game memory immediately, as of October 6, 2026.
- Known and currently approved tools: get an extended grace period until April 2027 to migrate any memory-dependent feature to Riot’s official APIs or drop it.
Riot’s own developer FAQ (“Vanguard FAQ,” riotgames.com/en/DevRel/vanguard-faq) draws the technical line clearly: tools built on the Riot API, the League Client Update (LCU) API, or in-game APIs like the Live Client Data API are expected to keep working. External tools that read memory directly will not. Riot is explicit that there is no allow list: being a well-known app doesn’t exempt you, and Riot has not guaranteed that any specific application will continue to function past the grace period.
One more clarification matters for players, not just developers: Riot’s support article states the restriction targets unauthorized tools interacting with the game client, and does not automatically ban players simply for having a third-party app installed.
Does Porofessor Use Memory Reading or the Official API?
Porofessor runs on Overwolf, the overlay platform that lists it as one of its featured apps on overwolf.com/features. Overwolf’s own developer documentation (dev.overwolf.com) describes the mechanism these apps use for live match data: the Game Events Provider (GEP), an API where an app subscribes to defined game events (a kill, an item purchase) and persistent game info, rather than scanning the game’s memory freeform. Overwolf has held a standing compliance agreement with Riot covering exactly this channel. Riot’s policy applies equally to every app regardless of platform, as the next section’s source confirms: running on Overwolf grants no special exemption, and skipping it grants no special penalty either.
That is categorically different from what Riot’s October 2026 change targets. Riot’s Vanguard FAQ names the group it’s shutting out as “external tools reading memory,” not apps consuming GEP or the Live Client Data API. Our breakdown of Riot’s API rules covers this distinction in more detail: companion apps that pull match history and live state through Riot’s sanctioned channels were never the target of Vanguard’s anti-cheat scans in the first place, because there’s nothing for the anti-cheat to flag.
The honest caveat: Riot has not published a named list of apps it considers safe, and its own FAQ repeats that there’s no guarantee any specific application keeps working. What’s verifiable today is the mechanism Porofessor uses to render its overlay, and that mechanism sits outside the category Riot describes as blocked.
Will You Get Banned for Using Porofessor or Similar Apps?
No, not for using an app that sticks to Riot’s official channels. Riot’s own clarification on the October 2026 change is that it targets unauthorized tools interacting with the client, not player accounts directly: the enforcement lever is cutting off the app’s access, not banning the person running it.
Use this table to place your own setup:
| If your companion app… | Then… |
|---|---|
| Uses Overwolf’s GEP or the Riot API/Live Client Data API (Porofessor, Blitz, Mobalytics, buildzcrank) | Keeps working as before; this policy wasn’t aimed at it |
| Markets a feature that reads “hidden” data no normal overlay can see, or asks you to disable security software | Stop using it now; that is exactly the behavior Riot’s October 2026 change blocks |
| Loses one specific feature (not the whole app) between now and April 2027 | That feature likely relied on memory access during the grace period; it’s an expected migration, not a sign you did something wrong |
| Stops launching entirely with no official explanation | Check the developer’s own changelog or socials before assuming a ban; Riot’s enforcement here hits the app’s access, not your account |
If you want the full breakdown of what’s allowed and what’s been restricted in third-party apps since the March 2025 ultimate-timer ban, our guide to Riot’s API policy linked above covers the rest of the rulebook.
What About Blitz, Mobalytics, and Other Companion Apps?
The same mechanism applies to Blitz and Mobalytics for their core features: pre-game and post-game data pulled from the Riot API, and live overlay data pulled through Overwolf’s GEP or the Live Client Data API, not through a memory scanner. Our full comparison of LoL companion apps breaks down how each one sources its data in practice.
The genuinely uncertain part is any single feature a developer never fully documented. Riot’s policy gives known, approved tools until April 2027 to finish migrating anything that still touches memory, which means a feature could quietly disappear from any of these apps between now and then without it meaning the app itself is unsafe. If that happens, the app’s own changelog around the date it broke is the fastest way to confirm what changed, rather than assuming your account is at risk.
If you’d rather sidestep Overwolf entirely, iTero and other standalone tools run without it; our guide to LoL companion apps without Overwolf lists the current options and what each one gives up by skipping the platform.
What to Do If a Companion App Stops Working
If a tool you rely on breaks or loses a feature between now and the April 2027 grace-period deadline, work through this checklist before assuming the worst:
- Check the app’s own changelog or social accounts first. A change this visible (Riot’s own support article, dated and public) means most developers will post about it rather than let players guess.
- Confirm you’re on the latest version. Apps migrating off memory access push updates quickly once a feature needs to move to the Riot API or Overwolf’s GEP.
- If only one feature disappeared, not the whole app, it most likely relied on memory access and is being retired during the grace period, not evidence of a ban or an account flag.
- If the entire app stops launching with no explanation, check Riot’s own support article for the current state of the policy rather than assuming your account triggered anything: this is an API-key and tool-access issue, not a player-level ban mechanism.
None of this requires reinstalling anything preventively. Riot’s policy affects what an app can read, not whether your account is in good standing for having installed it.
Where buildzcrank Fits Into This
buildzcrank isn’t built on Overwolf and doesn’t read game memory either: it reads only your own current state through the Live Client Data API (your champion, items, gold, and the game clock) the same sanctioned channel Riot’s policy explicitly says will keep working, then uses that context to adjust build recommendations as your specific match develops, instead of serving the same static template every game. For the technical side of how that works, see how AI recommends builds in real time.
The practical takeaway for anyone worried about the October 2026 change: the question to ask about any companion app isn’t “is it popular” or “is it on Overwolf,” it’s which data channel it actually uses. Apps built on Riot’s sanctioned APIs, Overwolf-based or standalone, were never the target.
Frequently Asked Questions
Is Porofessor banned or unsafe to use in 2026?
No. Porofessor runs on Overwolf and reads live match data through Overwolf's Game Events Provider and Riot's own APIs, the channels Riot's October 2026 policy explicitly says will keep working. Nothing in Riot's public communication names Porofessor as affected.
What exactly did Riot's October 2026 Vanguard update block?
Starting October 6, 2026, Riot began proactively blocking game memory access by default for unknown third-party applications across League, TFT, and VALORANT. Known, previously approved tools get until April 2027 to migrate any memory-dependent feature to Riot's official APIs.
Will using Blitz or Mobalytics get my account banned?
Not for using the API-based features that make up most of what these apps do. Riot's own clarification is that this change targets unauthorized tools interacting with the client, not player accounts, for apps that rely on the Riot API or Overwolf's GEP.
Why did my companion app lose a feature in late 2026?
If only one feature disappeared rather than the whole app, it most likely depended on direct memory access and is being retired during Riot's grace period, which runs through April 2027. That's an expected migration, not a sign of a ban or account flag.
Does buildzcrank use memory reading or Overwolf?
No. buildzcrank reads only your own live game state through Riot's Live Client Data API, the same official channel Riot's policy protects, and uses it to adjust build recommendations as your specific match develops.
Riot hasn’t published a list of apps it guarantees will keep working, and it says so explicitly. What’s verifiable right now is the mechanism: companion apps built on Overwolf’s GEP or Riot’s own APIs, Porofessor included, sit outside the category this policy was written to stop. If you’re evaluating which overlay to keep running this season, the companion app comparison linked above breaks down how each one sources its data and what that means for you going forward.