diff --git a/packages/core/src/highlevel/base.ts b/packages/core/src/highlevel/base.ts
index 71c2cac6..2d01f7e3 100644
--- a/packages/core/src/highlevel/base.ts
+++ b/packages/core/src/highlevel/base.ts
@@ -177,6 +177,13 @@ export class BaseTelegramClient implements ITelegramClient {
 
         this.log.prefix = '[USER n/a] '
         await this.storage.self.store(null)
+
+        // drop non-primary auth keys because they are no longer valid
+        const primaryDc = this.mt.network.getPrimaryDcId()
+        for (const dc of this.mt.network.config.getCached()?.dcOptions ?? []) {
+            if (dc.id === primaryDc) continue
+            await this.mt.storage.provider.authKeys.deleteByDc(dc.id)
+        }
     }
 
     async notifyChannelOpened(channelId: number, pts?: number): Promise<boolean> {