diff --git a/.changeset/sharp-bears-sing.md b/.changeset/sharp-bears-sing.md
new file mode 100644
index 0000000000..e2c4b4beb9
--- /dev/null
+++ b/.changeset/sharp-bears-sing.md
@@ -0,0 +1,5 @@
+---
+"effect": minor
+---
+
+Fix ConfigError `_tag`, with the previous implementation catching the `ConfigError` with `Effect.catchTag` would show `And`, `Or`, etc.
diff --git a/packages/effect/src/ConfigError.ts b/packages/effect/src/ConfigError.ts
index cdd87b40a5..ee84fb23b1 100644
--- a/packages/effect/src/ConfigError.ts
+++ b/packages/effect/src/ConfigError.ts
@@ -39,6 +39,7 @@ export declare namespace ConfigError {
    * @category models
    */
   export interface Proto {
+    readonly _tag: "ConfigError"
     readonly [ConfigErrorTypeId]: ConfigErrorTypeId
   }
 
@@ -72,7 +73,7 @@ export interface ConfigErrorReducer<in C, in out Z> {
  * @category models
  */
 export interface And extends ConfigError.Proto {
-  readonly _tag: "And"
+  readonly _op: "And"
   readonly left: ConfigError
   readonly right: ConfigError
 }
@@ -82,7 +83,7 @@ export interface And extends ConfigError.Proto {
  * @category models
  */
 export interface Or extends ConfigError.Proto {
-  readonly _tag: "Or"
+  readonly _op: "Or"
   readonly left: ConfigError
   readonly right: ConfigError
 }
@@ -92,7 +93,7 @@ export interface Or extends ConfigError.Proto {
  * @category models
  */
 export interface InvalidData extends ConfigError.Proto {
-  readonly _tag: "InvalidData"
+  readonly _op: "InvalidData"
   readonly path: Array<string>
   readonly message: string
 }
@@ -102,7 +103,7 @@ export interface InvalidData extends ConfigError.Proto {
  * @category models
  */
 export interface MissingData extends ConfigError.Proto {
-  readonly _tag: "MissingData"
+  readonly _op: "MissingData"
   readonly path: Array<string>
   readonly message: string
 }
@@ -112,7 +113,7 @@ export interface MissingData extends ConfigError.Proto {
  * @category models
  */
 export interface SourceUnavailable extends ConfigError.Proto {
-  readonly _tag: "SourceUnavailable"
+  readonly _op: "SourceUnavailable"
   readonly path: Array<string>
   readonly message: string
   readonly cause: Cause.Cause<unknown>
@@ -123,7 +124,7 @@ export interface SourceUnavailable extends ConfigError.Proto {
  * @category models
  */
 export interface Unsupported extends ConfigError.Proto {
-  readonly _tag: "Unsupported"
+  readonly _op: "Unsupported"
   readonly path: Array<string>
   readonly message: string
 }
diff --git a/packages/effect/src/internal/configError.ts b/packages/effect/src/internal/configError.ts
index b034139bfd..29d17328cd 100644
--- a/packages/effect/src/internal/configError.ts
+++ b/packages/effect/src/internal/configError.ts
@@ -16,13 +16,14 @@ export const ConfigErrorTypeId: ConfigError.ConfigErrorTypeId = Symbol.for(
 
 /** @internal */
 export const proto = {
+  _tag: "ConfigError",
   [ConfigErrorTypeId]: ConfigErrorTypeId
 }
 
 /** @internal */
 export const And = (self: ConfigError.ConfigError, that: ConfigError.ConfigError): ConfigError.ConfigError => {
   const error = Object.create(proto)
-  error._tag = OpCodes.OP_AND
+  error._op = OpCodes.OP_AND
   error.left = self
   error.right = that
   Object.defineProperty(error, "toString", {
@@ -37,7 +38,7 @@ export const And = (self: ConfigError.ConfigError, that: ConfigError.ConfigError
 /** @internal */
 export const Or = (self: ConfigError.ConfigError, that: ConfigError.ConfigError): ConfigError.ConfigError => {
   const error = Object.create(proto)
-  error._tag = OpCodes.OP_OR
+  error._op = OpCodes.OP_OR
   error.left = self
   error.right = that
   Object.defineProperty(error, "toString", {
@@ -56,7 +57,7 @@ export const InvalidData = (
   options: ConfigError.Options = { pathDelim: "." }
 ): ConfigError.ConfigError => {
   const error = Object.create(proto)
-  error._tag = OpCodes.OP_INVALID_DATA
+  error._op = OpCodes.OP_INVALID_DATA
   error.path = path
   error.message = message
   Object.defineProperty(error, "toString", {
@@ -76,7 +77,7 @@ export const MissingData = (
   options: ConfigError.Options = { pathDelim: "." }
 ): ConfigError.ConfigError => {
   const error = Object.create(proto)
-  error._tag = OpCodes.OP_MISSING_DATA
+  error._op = OpCodes.OP_MISSING_DATA
   error.path = path
   error.message = message
   Object.defineProperty(error, "toString", {
@@ -97,7 +98,7 @@ export const SourceUnavailable = (
   options: ConfigError.Options = { pathDelim: "." }
 ): ConfigError.ConfigError => {
   const error = Object.create(proto)
-  error._tag = OpCodes.OP_SOURCE_UNAVAILABLE
+  error._op = OpCodes.OP_SOURCE_UNAVAILABLE
   error.path = path
   error.message = message
   error.cause = cause
@@ -118,7 +119,7 @@ export const Unsupported = (
   options: ConfigError.Options = { pathDelim: "." }
 ): ConfigError.ConfigError => {
   const error = Object.create(proto)
-  error._tag = OpCodes.OP_UNSUPPORTED
+  error._op = OpCodes.OP_UNSUPPORTED
   error.path = path
   error.message = message
   Object.defineProperty(error, "toString", {
@@ -135,26 +136,26 @@ export const Unsupported = (
 export const isConfigError = (u: unknown): u is ConfigError.ConfigError => hasProperty(u, ConfigErrorTypeId)
 
 /** @internal */
-export const isAnd = (self: ConfigError.ConfigError): self is ConfigError.And => self._tag === OpCodes.OP_AND
+export const isAnd = (self: ConfigError.ConfigError): self is ConfigError.And => self._op === OpCodes.OP_AND
 
 /** @internal */
-export const isOr = (self: ConfigError.ConfigError): self is ConfigError.Or => self._tag === OpCodes.OP_OR
+export const isOr = (self: ConfigError.ConfigError): self is ConfigError.Or => self._op === OpCodes.OP_OR
 
 /** @internal */
 export const isInvalidData = (self: ConfigError.ConfigError): self is ConfigError.InvalidData =>
-  self._tag === OpCodes.OP_INVALID_DATA
+  self._op === OpCodes.OP_INVALID_DATA
 
 /** @internal */
 export const isMissingData = (self: ConfigError.ConfigError): self is ConfigError.MissingData =>
-  self._tag === OpCodes.OP_MISSING_DATA
+  self._op === OpCodes.OP_MISSING_DATA
 
 /** @internal */
 export const isSourceUnavailable = (self: ConfigError.ConfigError): self is ConfigError.SourceUnavailable =>
-  self._tag === OpCodes.OP_SOURCE_UNAVAILABLE
+  self._op === OpCodes.OP_SOURCE_UNAVAILABLE
 
 /** @internal */
 export const isUnsupported = (self: ConfigError.ConfigError): self is ConfigError.Unsupported =>
-  self._tag === OpCodes.OP_UNSUPPORTED
+  self._op === OpCodes.OP_UNSUPPORTED
 
 /** @internal */
 export const prefixed: {
@@ -164,7 +165,7 @@ export const prefixed: {
   (prefix: ReadonlyArray<string>) => (self: ConfigError.ConfigError) => ConfigError.ConfigError,
   (self: ConfigError.ConfigError, prefix: ReadonlyArray<string>) => ConfigError.ConfigError
 >(2, (self, prefix) => {
-  switch (self._tag) {
+  switch (self._op) {
     case OpCodes.OP_AND: {
       return And(prefixed(self.left, prefix), prefixed(self.right, prefix))
     }
@@ -201,12 +202,12 @@ type ConfigErrorCase = AndCase | OrCase
 
 /** @internal */
 interface AndCase {
-  readonly _tag: "AndCase"
+  readonly _op: "AndCase"
 }
 
 /** @internal */
 interface OrCase {
-  readonly _tag: "OrCase"
+  readonly _op: "OrCase"
 }
 
 /** @internal */
@@ -218,17 +219,17 @@ export const reduceWithContext = dual<
   const output: Array<Either.Either<Z, ConfigErrorCase>> = []
   while (input.length > 0) {
     const error = input.pop()!
-    switch (error._tag) {
+    switch (error._op) {
       case OpCodes.OP_AND: {
         input.push(error.right)
         input.push(error.left)
-        output.push(Either.left({ _tag: "AndCase" }))
+        output.push(Either.left({ _op: "AndCase" }))
         break
       }
       case OpCodes.OP_OR: {
         input.push(error.right)
         input.push(error.left)
-        output.push(Either.left({ _tag: "OrCase" }))
+        output.push(Either.left({ _op: "OrCase" }))
         break
       }
       case OpCodes.OP_INVALID_DATA: {
@@ -252,9 +253,9 @@ export const reduceWithContext = dual<
   const accumulator: Array<Z> = []
   while (output.length > 0) {
     const either = output.pop()!
-    switch (either._tag) {
+    switch (either._op) {
       case "Left": {
-        switch (either.left._tag) {
+        switch (either.left._op) {
           case "AndCase": {
             const left = accumulator.pop()!
             const right = accumulator.pop()!